CVD Tungsten Carbide Coatings Main Characteristics
- Details
- Category: Tungsten Information
- Published on Tuesday, 07 April 2015 18:51
CVD tungsten carbide coatings are different from other tungsten carbide coatings as they do not use cobalt or nickel metal matrix binder, the main characteristics of CVD tungsten carbide coatings are including,
- Outstanding chemical and corrosion resistance
- Free from through porosity, thus effectively protecting mild steel substrate from corrosive media without sealing the coating
- Superior resistance to sulfide stress cracking
- Provides effective protection against mineral acids such as sulfuric acid and hydrochloric acid
- Resists Aqua Regia at room temperature
- Superior wear resistance; Wear rate of CVD tungsten carbide coatings is four fold lower when compared to thermal spray WC, 12 fold lower than hard chrome, and 40 fold lower when compared to abrasion resistant steel AR-500
- Demonstrates better erosion rate when compared to chrome carbide weld overlay, hard chrome, white iron, cemented carbide, and various other hard materials
- Better fatigue resistance and toughness
- Superior resistance to impact and deformations
- Deposition from the gas phase enables coating of internal surfaces and intricate shapes
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