Korean Institute of Surface Engineering

pISSN : 1225-8024 | eISSN : 3399-8403


공학

한국표면공학회지 (30권6호 391-399)

Effect of ion implantation on the tribological properties of TiN-coated SKD 11 and SKD 61

TiN 코팅된 SKD11과 SKD61의 내마모 성질레 미치는 이온주입 효과

장태석;이수완;문대원;방건웅;

선문대학교 재료금속공학부;한국 표준 연구원;

Abstract

To figure out wheher the tribological properties of a hras-coating layer can be imporved by ion implantatio, TiN-coated SKD 11 61 were implanted with nitrogen ion and their wear peoperties were examined systematically. The amount of nitrgen ione implanted on the coating layer was $2 imes 10^{15},;10^{16},;10^{17},;and;10^{18};ions/ extrm{cm}^2$, respectively. X-ray diffraction revealed theintensity of the peaks belong TiN tended to increase as the ion dose increased, which implied that the implantation promoted the formation of TiN in the coated later. Howeverthe hardensity of the specimens increased then decreased again as the ion dose increased, resulting in a obvious drop of the hardness for the ion does of $2 imes 10^{18};ions/ extrm{cm}^2$. While the adhesion of the coated layer of SKD 61 was excllent regrdless of the implatation, the adhesion of the later of SKD 11 was apparently improved by the implantation. The overall wear properties of SKD 11 was better than that of SKD 61, and the best result was yielded at the ion dose of $2 imes 10^{15};ions/ extrm{cm}^2$.

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