132 転がり-滑り接触下における WC サーメット溶射皮膜の耐久性に及ぼす下地処理の影響

概要

論文の詳細を見る
Using a two-roller testing machine, the authors have examined the surface durability of thermally sprayed WC-Cr-Ni cermet coating in lubricated rolling/sliding contact conditions. In the present investigation, the coating of 60 to 210μm in thickness was formed onto the blasted, axially ground, and circumferentially ground roller specimens made of a thermally refined carbon steel or an induction hardened carbon steel by the high energy type flame spraying (Hi-HVOF). The coated roller finished to a mirror-like condition was mated with the carburized steel roller without coating, and a maximum Hertzian stress of P_H=1.0 to 1.4GPa was applied in line contact. In the thermally refined steel substrate roller, the coating on the circumferentially ground substrate generally shows a lower durability compared with that on the axially ground substrate or blasted substrate, and this difference appears more distinctly as the coating tickness decreases. On the other hand, the induction hardened steel substrate roller shows a higher durability, and the effect of substrate surface treatment was hardly recognized.
一般社団法人日本機械学会の論文
2002-04-18