논문 해외 국제전문학술지(SCI급) Oxidation Behaviors of Pure Ti Thermal Plasma Spray Coated Mo-Si-B Alloys
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2011-05
- 저자명 Young Ho Song, Joon Sik Park, Jeong Min Kim, Seong Hoon Yi
- 학술지명 Materials Science Forum
- 발행처명 material science and engineering
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 4
홈페이지
논문 초록 (Abstract)
Mo-Si-B alloys have been received an attention due to the high temperature strength and phase stability. However, the nature of poor oxidation resistance often limits the application of the alloy system. The unstable MoO3 phase is naturally produced when the alloys were exposed at low and /or high temperature in an air atmosphere. In order to resolve the poor oxidation resistance of the alloy system, several attempts have been made via surface coatings and/or component additions. In this study, the oxidation behaviors of the Ti powder thermal spray coated Mo-Si-B alloys have been investigated in order to identify the underlying mechanism for the effect of precursor Ti coatings on Mo-Si-B alloys. The oxidation tests performed at 1100 °C show that the Ti powder was tightly bonded and reacted with the surface of the substrate, and TiO2 layer was formed at the outer surface of the coated Ti layer as a result of oxidation exposure. The oxidation behaviors of pure elemental component coated Mo-Si-B alloys have been discussed in terms of microstructural observations during oxidation tests.