Molybdenum News Center

Spherical TZM Powder for a Potential Plasma Spray Application

Plasma spraying is used to apply ceramic, cermet and metal coatings in several industrial fields. These coatings are designed to provide wear and corrosion protection, or to provide functional properties such as thermal insulation or biocompatibility. 

Some examples of industrial sectors that use plasma sprayed coatings include: aerospace, mechanical engineering, marine engineering, automotive engineering, biomedical science, chemical and nuclear industry, steel, glass abrasion, household equipment and electronic product. 

Common applications include: 1) tungsten carbide/cobalt is used in seal ring grooves in the turbocompressor area of aeroengines to resist fretting wear; 2) zirconia-based thermal barrier coatings (TBC) on turbine combustors; 3) wear-resistant alumina and chromia ceramics on printing rolls for subsequent laser and diamond engraving/etching; 4) molybdenum alloys on diesel engine piston rings; 5) hydroxyapatite biocompatible coatings for medical and dental implants.

Regularly, spherical tungsten powder and spherical molybdenum powder are applied in this application. Fine tungsten powder can be used for thermal spray coating, especially plasma spray coating. At high temperatures, thin films made of materials with low melting points may diffuse and intermix with the adjacent layers. This does not happen with tungsten. This material has the highest melting point of all metals – as a result, tungsten layers are particularly stable.

Molybdenum thermal spray powders are engineered for maximum flow and spherical properties and were introduced as a technological advancement in the field of thermal spray protective coatings. Molybdenum powders are used not only to protect surfaces, but also to repair them, and have been optimized for a wide variety of spraying processes. Controlling texture through the use of highly skilled engineers is essential to ensure consistent performance and improve powder uniformity.

And now, spherical TZM Powder is a potential material for this application. More and more enterprises are testing the material. The powder contains about 0.45% Ti, 0.09% Zr and 0.002% O and is produced by plasma rotation electrode process (PREP). 

Chinatungsten Online is a professional manufacturer of tungsten and molybdenum for more than two decades. If you have got the purchasing plans for TZM alloy powder, please feel free to contact us. For more details of TZM powder, please visit our website: http://molybdenum.com.cn/TZM-powder.html.

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