Investigation of zirconium, titanium, chromium borides and titanium carbide with Ni-based self-fluxing alloy

Abstract

The wettability of titanium, zirconium, chromium diboride and titanium carbide with melted Ni-based self-fluxing alloy of Ni—Cr—Si—B system has been investigated. The contact angle of the TiC wetting with melted alloy is equal to 49º. The contact angle in the ZrB₂—(Ni—Cr—Si—B) system is equal to 40º. The Ni-based alloy wets TiB₂ with the formation of contact angle of 34º. The alloy is spread along the CrB₂ surface with formation of contact angle equal to 17º. The TiB₂—(Ni—Cr—Si—B) system was chosen for the new gas-thermal coatings production because of good wetting and minimal interaction between the components of melted drop and hard boride.