THE EFFECT OF WC-17Co THERMAL SPRAY COATING BY HVOF AND HARD CHROMIUM ELECTROPLATING ON THE FATIGUE LIFE AND ABRASIVE WEAR RESISTANCE OF AISI 4340 HIGH STRENGTH STEEL

摘要

One of the most interesting alternatives for replacement of hard chrome plating is tungsten carbide thermal spray coating applied by the high velocity oxy-fuel (HVOF) process which presents a safer, cleaner and less expensive alternative to chromium plating. The objective of this research is to compare the influence of the tungsten carbide-17cobalt (WC-17Co) coating applied by high velocity oxy fuel (HVOF) process with that of hard-chromium electroplating on the fatigue strength and abrasive wear of AISI 4340 steel.