Cobalt-based alloy powder

The company's supplied alloy powders are produced using internationally advanced atomization/water atomization technology. They are characterized by uniform composition, low oxygen content, good sphericity, and a full range of specifications. As a result, the powders exhibit good flowability, and are smoothly and stably fed during welding and spraying, without clogging the gun, forming beads, or sticking to the gun barrel. The powder quality has reached an internationally advanced level, earning high praise from customers both domestically and internationally.

Commodity name： Cobalt-based alloy powder

Category:

Custom metal powder

Email:

anna@hanhegy.com

Domestic Business:

0731-22335988 +86 13873301595

International Business:

+8619958301735

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产品描述

Main features

Cobalt-based alloys are produced by incorporating appropriate amounts of tungsten and carbon into cobalt-chromium alloys. The addition of tungsten enhances the solid solution strengthening of the cobalt matrix. Carbon has low solubility in the matrix; therefore, the added carbon and excess tungsten form carbides such as WC, W2C, and M6C. These hard phases are dispersed in the cobalt matrix, resulting in precipitation strengthening. This allows the alloy to maintain excellent strength and hardness even at high temperatures (800℃). Therefore, cobalt-chromium-tungsten-carbon alloys exhibit excellent comprehensive properties, including high-temperature wear resistance, high-temperature oxidation resistance, and thermal fatigue resistance.

Cobalt has a hexagonal close-packed structure below 417℃, exhibiting a low coefficient of friction and good wear resistance. At 417℃, a phase transformation occurs from hexagonal close-packed to face-centered cubic structure, generating volume stress. Therefore, during cladding and spraying processes, preheating the workpiece to 500℃-600℃ is generally required to prevent cracking of the cobalt-based weld layer.

Application processes

Industry Applications

The products have been widely used in melting, heating, quenching, high-temperature sintering, brazing, hot-fitting processing, semiconductor purification and other thermal processing occasions; serving the petroleum and natural gas, thermal power and nuclear power, metal casting, iron and steel metallurgy, automobile, engineering machinery, wind/hydropower generation, railway, aerospace, 3D metal printing, precious metals, cemented carbide, solar thin-film batteries and other industries.