Tungsten Carbide Coating Thickness

Finishes to a high metallic lustre when polished.

Tungsten carbide coating thickness. A tungsten carbide coating provides the same toughness of a solid tungsten carbide part but at a lower price point. Carbinite is a tungsten carbide or stellite carbide alloy that can be applied to most metals using a process called electro spark deposition esd yielding a true metallurgical bond. A a coatings hvof sprayed tungsten carbide was designed for use in thin coatings not more than 5mm 025 thick. Mechanical components subjected to severe environments are usually coat with cermet based wc co cr thermally sprayed coating.

Hvof tungsten carbide has a bonding strength to the substrate of 80 mpa 10 ksi. The right image shows the much smoother tungsten carbide coating applied by hvof. Check out these helpful resources. Guide to substrate preparation for thin film coatings.

Coating thickness mm in 0 08 0 003 0 13 0 005 surface finish ra 4 4. The tungsten carbide wc 12co coatings are resistant to sliding wear impact abrasion and fretting at temperatures up to 510 c 950 f preferably in non corrosive media. Tungsten carbide wc co chrome carbide cr3c2 nicr our advanced coatings enhance the performance of your parts. Ct2143 2 is a tungsten carbide cobalt chrome coating applied using the hvof process.

The left image shows a hard chromium coating. This high bond strength far surpasses any spray on coating currently available. Wc 12co thermal spray coatings are usually harder compared to coatings of wc 17co as a result of higher tungsten carbide levels in the coating. The coating thickness varies based on the size of the part but is between 0 5mm to 3mm with a hardness of 91 hra and a mirror polish to keep friction at a minimum.

The coating plays a very. If sprayed thicker the probability of cracking and delamination will increase rapidly as is the case of thick coatings of all fine powders. The coating is very dense very hard very well bonded and suitable for use in the most aggressive wear environments. The existence of chrome within the matrix greatly enhances the corrosion resistance of this coating over traditional wc co 12 type hvof coatings.

If sprayed thicker the probability of cracking and delamination will increase rapidly as is the case of thick coatings of all fine powders. A a coatings plasma sprayed tungsten carbide was designed for use in thin coatings not more than 5mm 020 thick. Coating porosity 0 5 as measured in accordance with astm e2109.