Korean Institute of Surface Engineering

pISSN : 1225-8024 | eISSN : 3399-8403


공학

한국표면공학회지 (39권4호 160-165)

Properties of Ni-SiC Composite Coating Layers Prepared by Electroplating Method

전해도금법으로 형성한 Ni-SiC 복합피막층의 특성

이홍기;손성호;이호영;구석본;전준미;
Lee, Hong-Kee;Son, Seong-Ho;Lee, Ho-Young;Koo, Seok-Bon;Jeon, Jun-Mi;

한국생산기술연구원 나노표면기술팀;
Nano-surface Technology Team, Division of Production Technology, Korea Institute of Industrial Technology;

Abstract

Ni-SiC composite coating layers were prepared by electroplating method and their deposition rate, codeposition of SiC, morphology, surface roughness, hardness, wear and friction properties were investigated. It was found that the deposition rate and the codeposition of SiC in the composite coating layer increased with increasing concentration of SiC in the solution only at the early stage. Both of them reached certain maxima and then decreased with increasing concentration of SiC. Rough surface was obtained with increasing codeposition of SiC, which is probably due to the agglomeration of the SiC particle in the vicinity of surface. Vickers hardness increased with increasing codeposition of SiC and heat treatment at $300^{circ}C$ in air for 1 hour. Wear volume decreased with increasing codeposition of SiC and friction coefficient increased with increasing codeposition of SiC at the early stage, and it became almost constant. Such wear and friction behaviors are desirable for the practical application.

Keywords

Ni-SiC;Composite;Electroplating;Codeposition;Hardness;Wear;Friction;