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

• Published in: Biuletyn Uniejowski Vol. 51; no. 5; pp. 297 - 302
• Main Authors: 황주나(Ju-Na Hwang), 강성훈(Sung-Hun Kang), 조성필(Sungpil Cho), 정희종(Hui-Jong Jeong), 김동욱(Dong-Uk Kim), 이방희(Bang-Hui Lee), 황준(Jun Hwang), 이용규(Yong-Kyu Lee)
• Format: Journal Article
• Language: Korean
• Published: 한국표면공학회 2018
• Subjects: 기계공학; Pack cementation; Thermal diffusion coating; Anti-galling; Stainless steel; Tin-Aluminum
• ISSN: 1225-8024; 2299-8403; 2288-8403
• DOI: 10.5695/JKISE.2018.51.5.297

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.