耐高温自润滑耐磨材料.pdf

Available online at CERAMICS INTERNATIONAL Ceramics International 40 (2014) 2799–2807 /locate/ceramint The influence of SrSO on the tribological properties of NiCr–Al O 4 2 3 cermet at elevated temperatures a,b a a a a,n Feng Liu , Gewen Yi , Wenzhen Wang , Yu Shan , Junhong Jia aState Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China b University of Chinese Academy of Sciences, Beijing 100039, PR China Received 6 September 2013; received in revised form 1 October 2013; accepted 7 October 2013 Available online 18 October 2013 Abstract The tribological properties of NiCr–40 wt%Al2O3 (NC40A) cermet-based self-lubricating composites containing 10 wt%–30 wt% SrSO4 against alumina ball were investigated at elevated temperatures. The results indicated that the friction coefficients and wear rates were significantly reduced by adding different a