Category Archives: Articles

30 Oct

Tantalum Carbide Powder

Tantalum Carbide Powder

Tantalum carbide (TaC) is an extremely hard (Mohs hardess 9-10) refractory ceramic material. The hardness is only exceeded by diamond. It is a heavy, brown powder usually processed by sintering, and an important cermet material.

They are extremely hard , brittle,refractory ceramic  materials with metallic electrical conductivity.

Tantalum carbides (TaC) is used to increase the performance of hard metal cutting tools that are very important due to their use in growth markets such as the automobile and aerospace industries. It is sometimes used as a fine-crystalline additive to tungsten carbide alloys.

 

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Linda Deng

Shanghai Greenearth Chemicals Co.,Ltd

Add: Room B-802, Nanzheng Building,580 West Nanjing Road,Shanghai,China

Email: linda@greenearthchem.com

TEL:+86-13472535069

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30 Oct

Zirconium Carbide powder

Zirconium Carbide powder

It has the appearance of a gray metallic powder with cubic crystal structure. It is highly corrosion resistant. Like most carbides of refractory metals, zirconium carbide is sub-stoichiometric, i.e., it contains carbon vacancies. At carbon contents higher than approximately ZrC0.98 the material contains free carbon.[5] ZrC is stable for a carbon-to-metal ratio ranging from 0.65 to 0.98.

Hafnium-free zirconium carbide and niobium carbide can be used as refractory coatings in nuclear reactors. Because of a low neutron absorption cross-section and weak damage sensitivity under irradiation, it finds use as the coating of uranium dioxide and thorium dioxide particles of nuclear fuel. The coating is usually deposited by thermal chemical vapor deposition in a fluidized bed reactor.

We would like to be your reliable supplier and trusted friends. Thank you for your attention!

 

Linda Deng

Shanghai Greenearth Chemicals Co.,Ltd

Add: Room B-802, Nanzheng Building,580 West Nanjing Road,Shanghai,China

Email: linda@greenearthchem.com

TEL:+86-13472535069

Skype: linda_evergreen

30 Oct

Chromium Powder

Chromium Powder  is the hardest metal element in the periodic table and the only element that exhibits antiferromagnetic ordering at room temperature, above which it transforms  into a paramagnetic solid. Chromium does not oxidize in air, even in extreme moisture.

The most common source of chromium is chromite ore (FeCr2O4). Due to its various colorful compounds, Chromium was named after the Greek word ‘chroma’ meaning color. It is also employed to give glass an emerald green color .

Chromium Powder  is used as a hardener in steel, for the manufacture of stainless steel and many useful alloys. Also can be Pigments, dyes, corrosion/oxidation resistant plating and coating refractory products, superalloys , stainless steel, electronics, supptering source,magnetic storing materials, betteries, catalysts, welding alloys, and thin film for electronics.

In combustion equipment, chromium is used as a wear-resistant coating to increase the service life of specific components.

As a component in high-temperature fuel cells, our chromium also performs brilliantly. Alongside these applications, our chromium is also used as a brilliant decorative coating for operating elements on appliances or for jewellery..

We would like to be your reliable supplier and trusted friends. Thank you for your attention!

 

Linda Deng

Shanghai Greenearth Chemicals Co.,Ltd

Add: Room B-802, Nanzheng Building,580 West Nanjing Road,Shanghai,China

Email: linda@greenearthchem.com

TEL:+86-13472535069

Skype: linda_evergreen

 

28 Sep

Scandium (Sc ) Metal

We call Scandium (Sc) Metal scandium, Sc, scandium metal powder, scandium lump, scandium pieces, scandium ingot, scandium foil, the available purity is 99.9%.

Description

A much more abundant element on the sun than on earth, scandium is still widely distributed on earth, occurring in over 800 mineral species. Scandium is a silvery-white metal that develops a yellow or pink tint when exposed to air. It is relatively soft and is chemically similar to the rare earth metals. Scandium’s light weight and high melting point suggest applications within the aircraft industry.

Main application.

  1. a) Since it is not a very common metal, scandium does not have many applications. If it were more common, it might be useful in the making of aircraft and spacecraft structures, probably alloyed with other metals.
  2. b) It is used in lacrosse sticks; a light yet strong metal is needed for precise accuracy and speed. Backcountry tent manufacturers sometimes use scandium alloys in tent poles. U.S. gunmaker Smith & Wesson produces a few variations including a large, medium, and small lightweight revolver with a frame composed of scandium alloy and a titanium cylinder.
  3. c) Approximately 20 kg (as Sc2O3) of scandium is used annually in the United States to make high-intensity lights. Scandium iodide added to mercury-vapor lamps produces an efficient artificial light source that resembles sunlight, and which allows good color-reproduction with TV cameras. About 80 kg of scandium is used in light bulbs globally per year. The radioactive isotope Sc-46 is used in oil refineries as a tracing agent.
  4. d) The main application of scandium by weight is in aluminium-scandium alloys for minor aerospace industry components, and for unusual designs sports equipment (bikes, baseball bats, firearms, etc.) which rely on high performance materials. However, titanium, being much more common, and similar in lightness and strength, is much more widely used, with tons found in some aircraft, especially military ones.
  5. e) The original use of scandium-aluminium alloys was in the nose cones of some USSR submarine-launched ballistic missiles (SLBMs). The strength of the resulting nose cone was enough to enable it to pierce the ice-cap without damage, and so, enabling a missile launch while still submerged under the Arctic ice cap.

More detailed information including MSDS sheet, lot weight, packing condition, lead time and price are all ready to reply within 24 hours after receiving your expected request.

We would like to be your reliable supplier and trusted friends. Thank you for your attention!

 

Linda Deng

Shanghai Greenearth Chemicals Co.,Ltd

Add: Room B-802, Nanzheng Building,580 West Nanjing Road,Shanghai,China

Email: linda@greenearthchem.com

TEL:+86-13472535069

Skype: linda_evergreen

 

28 Sep

Cerium Oxide Polishing Powder

Cerium Oxide Polishing Powder,also called cerium polishing powder and rare earth based polishing powders, high suspension in water and quick polishing when used with any felt polishing pad, removes hairline scratches, lime scale and adhesive residue.

Various grades of Cerium Oxide Polishing Powder are widely applied in flat glass, CRT, LCD, TFT glass, mirrors, glasses, optical glass, lens, and many other field of glass industry.

 

Package-2 Package-1

 

More detailed information including MSDS sheet, lot weight, packing condition, lead time and price are all ready to reply within 24 hours after receiving your expected request.

 

We would like to be your reliable supplier and trusted friends. Thank you for your attention!

 

 

Linda Deng

Shanghai Greenearth Chemicals Co.,Ltd

Add: Room B-802, Nanzheng Building,580 West Nanjing Road,Shanghai,China

Email: linda@greenearthchem.com

TEL:+86-13472535069

Skype: linda_evergreen

 

28 Jan

Different Types of Metallic Deoxidizers in Steel, Glass and Alloy Making

The Significance of Metallic Deoxidizers

Deoxidization is an important process in steel making and it is carried out by including specific range of metals to remove the oxygen content present in steel. Since, presence of oxygen reduces the quality of steel, deoxidization process helps in obtaining the best quality.. However, anti-oxidants are available in different combinations and in powder form. These are them added during the respective processes of manufacturing and they also help in removing the impurities present.

Types of Special Ingredients Applied in Steel and Alloy Manufacturing

There is a long list of special ingredients that stay effective in purification and manufacturing processes. Some of them are,

  • Calcium.
  • Zirconium.
  • Chromium.
  • Samarium.
  • Vanadium.
  • Zirconium carbide.
  • Hafnium carbide.
  • Cerium oxide polishing powder, etc.

different-types-of-metallic-deoxidizers-in-steel-gass-and-alloy-making

List of Inter-metallic Ingredients supporting Deoxygenating

Inter-metallic compounds are those that contain silicon therefore they termed as metallic silicides. These are very supportive in optimizing metal products into its pure form.

  • Calcium Silicide : It is one of the prominently chosen deoxidizer and it belongs to the inorganic range of compound. It is available in whitish or dark grey or black in color. It is applied as deoxidizer, desulfurizing agent, degasser for steel, cast-iron, etc. In addition to that, it works as an efficient component in the manufacturing of special metal alloys as it effectively removes phosphorous and keep the purity of main metal.
  • Zirconium silicide : It is one of the excellent additives applied in the manufacturing of hard metals. It also finds an important place in powder metallurgy.
  • Vanadium Powder : It is added to steel during the formation of ferroalloy and it is also added to titanium alloys and in aluminothermic reduction. It is applied in rail steels, forging bars, high temperature steels, spring and heat treated steels, cast iron, etc. If also forms into an excellent combination when added to titanium alloy and applied in gas processing, ceramic , glass and many more industries.
  • Hafnium Carbide : Shows high crystallization temperature and low thermal expansion which makes this component provide high thermal conductivity. It is a kind of alloy that suits best in brass extrusion.
  • Cerium oxide polishing powder : It is a high efficient polishing powder used for polishing different kinds of glasses. It reacts effectively on surfaces and produces cerium oxygen component that is even softer than glass and leaves a final smooth glass surface. This is widely applied in flat type of glasses, LCD, TFT, mirrors, optical glasses, and several other applications where glass is applied.
  • Samarium Powder : It is available as a silvery white metal granule and it exists in minerals including cerite, allanite, etc. When it is exposed in moisture it gets oxidized easily. Though this ingredient is not much applied in metal industry, it has a great role to play in ceramic, glass and electronic industries.

Conclusion

The field of metallurgy leads us to know about varieties of metallic as well as silicon based components that are widely used in formation of pure metal. These helps in getting pure form of product and in producing smooth surfaced materials.

06 Jan

Special Powder and High Temperature Alloys – Applications and Benefits

Special Alloys for Powder metallurgy

Special alloy powders remain a great source of usage in powder metallurgy. Powder metallurgy is a technique that involves collection of production methods in which different types of alloy powders are added to from desired shape of product using fine alloy granules. Green Earth Chemicals has been involved in the production of different types of organic as well as inorganic chemicals. With excellent research and testing equipments, electrochemical analyzer, etc we are able to keep up with growth in the production of varieties of industry specific special alloy powders. These powders contains excellent properties which make them preferred for higher range of industries including aerospace, fireworks, electrode welding, etc.

Chromium Metal Powder

buy-Chromium-Metal-Powder

These are high quality electrolytic chromium metal powder formed with minimum percentage of impurities. It is widely used in electrode welding. This material is also found be of great use as hardener of aluminium and coating applications. When it comes to making of specialty alloys, this powder has an excellent usage in the production of nickel, cobalt-based alloy, etc as these alloys do not require iron and contains temperature and corrosion resistant properties.

Hafnium dioxide

buy-Hafnium-dioxide

Hafnium dioxide is a best alternative for silicon oxide in field effect transistors. It is a most preferred compound that is applied in the making of integrated circuits. It shows high melting point and helps to increase logic density and reduce powder consumption in processor. Hafinum dioxide is also found to be an excellent component in the making of antireflection multilayer coating for laser resistant optical component as it has 2.1 real refractive index wavelength range.

High purity chromium metal powder

buy-high-purity-chromium-metal

High purity chromium metal powder is made through a series of process and it stays an important component in the application of high temperature applications such as solar applications, nanotechnology, etc where high density surface area is desired.

Ti-al alloy powder

Ti-al alloy powder is preferred for its low density, high strength and excellent oxidation resistance properties. It is applied for structural processes in aerospace industry and automotive production. Power plants also find great usage of this component for its high-temperature structural application, high melting point capacity and modulus retention property.

Titanium dioxide

buy-Titanium-dioxide

It belongs to nano material and appears to be more effective in UV absorption. It is fond to show more benefits when used as a white pigment as the pigment texture exhibits high light-scattering properties. It suits for applications where opacity is required.

Titanium hydride powder

buy-Titanium-hydride-powder

Titanium hydride powder is preferred for its light weight and corrosion resistant properties and it is widely applied in thermal spray coating applications of different types of ceramics. The hydrogen source of this component makes this product for applying in powder metallurgy and de-oxidation process. Other applications include aerospace, machinery, automobiles, jewelry, etc.

Titanium sponge and Titanium zirconium alloy

buy-Titanium sponge and Titanium zirconium alloy

Titanium sponge is one of the basic raw materials that are used in the refining process of titanium metal. Titanium zirconium alloy is used as an intermediate alloy additive in biomedical application and as an important ingredient in fire work manufacturing.

Conclusion

Special alloy powders are high temperature and corrosion resistant. These are produced through different types of processes and stay very effective in wide range of applications where high temperature is applied including aerospace, fireworks, explosives, etc.

23 Dec

Ferro Alloy Powders for Industrial Usage

Varieties of Ferro Alloy Powders

Ferro alloy powders are produced in different forms with combinations of different elements. The combinations are made in accordance with their properties which may be used in several industrial processes. Ever combination shows significant property that helps industries to choose the right combination.

Ferro Boron Powder for Strong steel and Magnet Production

Ferro Boron Powder is formed from combining iron and boron. It helps in bringing out strong form of steel and in the production of magnets. The powder form is compatible to be easily added in the manufacturing of alloy. Adding this ingredient works very well for increasing the quenching capacity of alloy.

Ferro Chromium for Adding Precise Chrome Percentage

Ferro chromium is an important ingredient in stainless steel manufacturing. It is formed from the combination of iron and chromium with chromium added in relatively higher ration than iron. It is used for special applications like setting the chrome percentage in stainless steel production. In addition to that ferro chrome remains a cost effective alternative to metallic form of chrome.

Ferro Manganese –Heat Resistant Component

Ferro manganese is available in different forms with variations brought in carbon level. The carbon level of ferro manganese is the key factor that helps to choose its variety in relation to industrial application. Ferro Manganese with high carbon contains excellent heat resistant properties and it is used for producing high quality stainless steel. Ferro manganese with medium carbon content is preferred in cast iron and chemical industry.

Ferro Alloy Powders for Industrial Usage

Ferro Titanium-The Ideal Stabilizer for Stainless Steel

Ferrous elements also contain stabilizing capacity and ferro titanium is the one that is applied in stainless steel manufacturing as a stabilizing agent. This ingredient also restricts chromium carbide formation during the production of steels with low carbon

Ferro Tungsten-Made from Rich Ore

Ferro Tungsten is a leading component in the production of tungsten steel and in the production of cemented carbide. The powder is coarse in texture yet has excellent flow characteristics. It is also applied in plasma spraying, fabricating alloys, metallurgy, high speed steel production, steel tools, etc.

Ferro Zirconium-Refiner of Grains

Ferrous metal industry requires several chemicals to obtain exclusive properties for its products and ferro zirconium supports grain refining process in metal industry. It also modifies sulfide shape and contains good deoxidizing property. Adding this component in steel production leads to get strong and impact resistance alloy.

FeSi Powder for Economic Operation Cost

As the name suggests this component is a combination of silicon and ferrous metal. It forms heavy medium. Compared to different types of ferrous combinations, FeSi powder is abrasion and corrosion resistant. It contains higher amount of specific gravity. However, the properties of this element can be increased or decreased by varying the percentage of silicon while forming FeSi.

Proportionate Ferro Alloy Powders at One Place

Greenearth Chemicals in China is involved in manufacturing of exclusive ranges of higher grade organic and inorganic chemicals and combinations of chemicals that are then used for several industrial purposes. Our products are destined to cover big range of industries. With well equipped research facilities and our business network across popular countries, we are able to make our company one place destination for buying varieties of chemicals.

Conclusion

Ferro alloy combinations are made with different chemical compositions and each combination bears significant property. Steel industry benefits extensively with the help of adding different forms of ferro alloy components.

06 Oct

Rare Earth Organic and Inorganic Chemicals from Reliable Sources

Special rare earth elements exist in the periodic table and their utilization is gradually increasing due to their special properties. They are referred to as rare not due to lacking in abundance but rather due to sparse geographical occurrence in the earth crust.

Manufacturing Process of Carbide Chemicals

Carbides are formulated as powders. The processes involved include milling, vacuum drying and spray drying. In attrition milling, carbide balls are fed to the milling machine with a special milling liquid. Other materials are destroyed in the process to achieve a homogenous mix. They are dried in vacuum to prevent oxidation to get the required carbide powder.

Evaporation Materials Applications

Evaporation materials available from green earth chemicals include fluoride evaporation, metal evaporation, mixture evaporation materials and oxide evaporation materials. These materials are used in thermal coating of materials in a method called “thin film deposition” in which the evaporation material is heated in a vacuum chamber, evaporates and the moisture deposits on the material to be coated. The process is used in making of items such as metal coated plastics.

Ferroalloys/Electrode Powder Series

Ferroalloys/Electrode Powder Series include Alv alloy, CaSi alloy. They are used in manufacturing of electrode powder as well as various types of steel alloys.

Manufacturing Process of Carbide Chemicals

Film Substrate from Green Earth Chemicals

The film substrate material available from green earth metals includes LaALO3, LaSrAlO4, magnesium oxide, and NdGaO3. These products are used in application of a thin film largely for protection of corrosive material from degradation. A thin film layer of a thickness of 50 nanometers is applied especially in electronic semiconductors and optical devices.

Nitride Chemicals

These are chemicals formed when nitrogen is combined with another element that has the same or even lower electro negativity like that of silicon, or boron and mostly metals. They are classified as ionic, covalent or interstitial. Some nitrides are highly refractory and resistant to chemical attack and therefore used in the manufacture of abrasives and heat resistant products like crucibles. Some nitride chemicals include vanadium nitrogen alloys, aluminum nitrides, Boron and chromium. These are very hard and resistant to any form of chemical attack.

Rare Earth Organic and Inorganic Chemicals

Rare Earth Chemicals

From green earth chemicals, high quality rare earth chemicals include cerium carbonates, cerium fluorides, dysprosium oxides, lanthanum compounds such as lanthanum carbonate, and Neodymium oxide. They have very high refractive index and are incorporated in manufacture of battery electrodes, camera lenses and as part of catalyst in oil refinery.

Scattered Metal

Scattered Metal includes cadmium, gallium, germanium oxide, indium, selenium and tellurium. Selenium shows high photo voltaic activity therefore used in manufacture of solar cells as well as photo conductive action and is very useful in the manufacture of electronic rectifiers.

Silicide Chemicals

These include calcium Silicide, chromium Silicide and zirconium disilicide. The calcium Silicide is useful in the making of special alloys and assisting in the removal of phosphorus as a deoxidizer.

Special Powder/Alloy Series

Special Powder/Alloy Series are metal alloys used in a wide range of industrial functions. The chromium metal powder is highly corrosion resistant thus very effective protective clothing. Tungsten has very high heat resistance and highest melting point of all metals and thus very effective in high temperature applications. Titanium dioxide is very efficient in light scattering and a good whitener when incorporated during plastic making. This whitening effect enhances durability of polymer products.

06 Oct

Important Carbide Chemicals and Industrial Application

Carbides are combinations of special metals and carbon to form very hard materials greater than that of hardened steel. They are therefore used in applications requiring extreme strength such as machine tool bits, drilling and mining operations.

Mechanical Properties of Carbides

The mechanical properties of carbides are determined in terms of;

  • Hardness at varying temperatures
  • Hardness measured at room temperatures
  • Compression strength in megapascals
  • Transverse rapture force in megapascals
  • Elasticity

Tantalum carbide exhibits a hardness of 1570 Hv (Vickers hardness) at 200 c and 800 Hv at 7300c, as compared to titanium carbide which exhibits a hardness of 2930 Hv at 200c and 640 Hv at 7300c. Different carbides will show varying mechanical properties

Industrial Applications of Carbides

The special combination of physical and structural properties of carbides gives them special industrial uses. These include:

  • Resistance to abrasion which is very high and they easily outlast hard steel grades.
  • Resistance to deflection: Compared to steel bars of the same grades, carbides have an elasticity modulus of up to three times more which equals to one third deflection compared to the steel bars.

These are properties which make these carbide chemicals very effective in extreme temperature and pressure conditions such as in drilling and machine tool bits. Carbide balls are also used as milling agents due to their hardness in Attritor mills. Some Specific carbide chemicals include;

Tantalum Carbide

It has very strong covalent bonds in their structure producing a hard and brittle material. It has very high degree of stability and resistance thus used to enhance performance of very hard metal machining tools.

tantalum_carbide

Chromium Carbide Powder

Chromium carbide powder used in manufacture of bearing seals, valve seats and its ability to resist corrosion makes it suitable in applications where chemical corrosion is likely. It is also used as a heated spray for protecting vulnerable metal surfaces.

Chromium-Carbide-Powder

Ferrotitanium Carbide

Ferrotitanium Carbide is effective in solving many wearing out problems and enabling re use of worn out and reconditioned machine tool pieces. It is easily re-machined and hardened through a simple heat treatment.

Ferrotitanium-Carbide

Hafnium Carbide Powder

This compound is used in production of hard coatings such as plasma spraying. The power form is used in applications requiring high surface areas such as in fuel cells and solar panels applications.

Silicon Carbide

With a chemical formula of Sic, it has been used for a long time as an abrasive substance therefore used in the manufacture of sand papers, grinding wheels and cutting tools in industry. It is also used in heating elements in furnaces and refractory linings.

TiNC Powder

Denoted as carbon titanium nitride powder, it is used in hardening and protection of cutting and sliding surfaces. It is also used in decorative purposes due to the gold like appearance as well as a non toxic cover for medical implants.

Titanium Carbide Powder

It is used as an additive in production of manufacturing tools, and hard ceramics.

Mechanical Properties of Carbides

Tungsten Carbide Powder

Ha s a number of industrial applications due to its hardness and tough nature. The powder has varying grain size and using a binder material, engineers can develop a variety of very hard components used in manufacture of machine tools components. The tungsten carbide powder can be cemented and used in manufacture of very hard gears and special tools used in the mining and oil exploration sectors.

Vanadium Carbide Powder

Recognized as the hardest metal carbide known, and is produced by heating the vanadium oxides with carbon to temperatures of over 10000c

Zirconium Carbide Powder

It has an extremely hard refractory material therefore also used in manufacture of tool bits for machine tools cutting heads.