논문 국내 국내전문학술지(KCI급) Kinetics for Aluminum Coatings and Degradation Properties of Aluminide - Coated and pre-oxidized Haynes230 Alloys via Pack Cementation Route
- 학술지 구분 국내전문학술지(KCI급)
- 게재년월 2015-10
- 저자명 Min Seok Kim1, Jin Soo Park1,2, Young Il Son3, Joon Sik Park1*
- 학술지명 대한금속･재료학회지
- 발행처명 대한금속·재료학회지
- 발행국가 국내
- 논문언어 한국어
- 전체저자수 4
- 연구분야 공학 > 재료공학
홈페이지논문 초록 (Abstract)
Aluminim pack cementation coatings on Haynes 230 alloys have been developed between 500 and 600 ℃. A single Al3Ni layer was coated on the alloys. The activation energy for growth rate of the coated layer thickness was estimated as 63.1 kJ / mol in the examined temperature range. In order to examine the degradation behaviors, the alloys were subjected to high temperature flame via an LPG / O2 gas torch. In order to test the degradation behaviors, uncoated alloys, coated alloys and oxidized following coated alloys have been prepared. The uncoated Haynes 230 alloys exhibited a weight loss during the torch tests due to the sublimation of chromium oxide on the surface, and the coated allo specimen showed an surface melting due to low melting temperature of the coating layer. However, the coated with oxidation - treated Haynes 230 alloys maintained the original weight due to the presence of an surface in-situalumina layer. The coated microstructures and related coating kinetics are discussed in terms of structural identification and weight changes.