Korean Institute of Surface Engineering

pISSN : 1225-8024 | eISSN : 3399-8403

공학

한국표면공학회지 (51권5호 297-302)

Development of Sn-Al Thermal Diffusion Coating Technology for Improving Anti-Galling Characteristics of 304 Stainless Steel

304 스테인레스강의 고착방지성능 향상을 위한 Sn-Al 열 확산 코팅 기술 개발

황주나;강성훈;조성필;정희종;김동욱;이방희;황준;이용규;
Hwang, Ju-Na;Kang, Sung-Hun;Cho, Sungpil;Jeong, Hui-Jong;Kim, Dong-Uk;Lee, Bang-Hui;Hwang, Jun;Lee, Yong-Kyu;

한국교통대학교 항공기계설계학과;;한국교통대학교 4D바이오소재센터;주식회사 바이브록
Dept. of Aeronautical & Mechanical Design Engineering, Korea National University of Transportation;KB-Biomed;4D Biomaterials Center, Korea National University of Transportation;Viblock Co. Ltd.;

DOI : 10.5695/JKISE.2018.51.5.297

Abstract

The important drawback of hardware fasteners consisted of 304 stainless steel (STS) is a frequent galling caused by a combination of friction and adhesion between the sliding surface. To improve the anti-galling effect, Sn-Al coatings by a thermal diffusion have been developed. The thermal diffusion by pack cementation with an $AlCl_3$ activator at $250^{circ}C$ for 1 hour produced an Sn-Al alloy coating layer with an average thickness of $9.9{pm}0.5{mu}m$ on the surface of 304 STS fasteners. Compared with the galling frequency of the 304 STS fasteners, Sn-Al coatings on the surface of 304 STS fasteners demonstrated about 2.8-time reduction of the galling frequency.

Keywords

Thermal diffusion coating;Tin-Aluminum;Anti-galling;Stainless steel;Pack cementation;