Early high temperature oxidation behaviour of Ti(C,N)-based cermets in air |
| |
| Authors: | Qingqing Yang Shiqi Li Xiao Chen |
| |
| Affiliation: | a State Key Laboratory of Material Formation and Die and Mould Technology, Huazhong University of Science and Technology, Wuhan 430074, PR China
b School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China |
| |
| Abstract: | Isothermal oxidation behaviour of two Ti(C,N)-based cermets (TiC-10TiN-16Mo-6.5WC-0.8C-0.6Cr3C2-(32-x)Ni-xCr, x = 0 and 6.4 wt%) was investigated in air at 800-1100 °C up to 2 h. Mass gains exhibited neither linear nor parabolic law during isothermal oxidation. The oxide scales formed at 800-1100 °C were multi-layered, consisting of NiO outerlayer, NiTiO3 interlayer and TiO2-based innerlayer. The internal oxidation zones formed at 1000-1100 °C consisted of Ti-based, Ni-based and Mo-based complex oxides. Cermet with 6.4 wt% Cr exhibited superior oxidation resistance, due to the presences of Cr0.17Mo0.83O2 in TiO2-based innerlayer of the oxide scale and Cr-rich Ti-based complex oxide in the internal oxidation zone. |
| |
| Keywords: | A. Ceramic matrix composites B. XRD B. SEM C. Oxidation |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
