Korean Institute of Surface Engineering

pISSN : 1225-8024 | eISSN : 3399-8403


공학

한국표면공학회지 (28권6호 361-367)

Formation of Wear Resistant Layer on Steel by Immersion in Borax Bath After Nitriding

질화후 붕사욕 침적에 의한 강의 내마모성 피복층 형성에 관한 연구

김선규;유정광;

울산대학교 금속공학과;

Abstract

When steels are heated at $1000^{circ}C$ in a fused borax bath containing $V_2O_5$ and $B_4C$powders, vanadium carbide layers are formed on the steel surfaces. Since a decrease in carbon concentration and in microhardness in the substrate just below the carbide layer has been observed, gas nitrocarburizing and vanadium carbide forming processes were combined to form a V(C,N) type layer which prevented the decrease in carbon concentration in the substrate. EPMA analysis was done for this V(C,N) type layer. Hardness just below the layer and wear resistance properties of such treated specimens were investigated.

Keywords