The effects of mechanical properties and sintering duration on the wear behaviour of silicon nitride

13th International Conference on Tribology

Brusilová, A.^1 ; Švec, P.^1 ; Gábriová, Z.^1 ; Pokusová, M.^2

Institute of Technologies and Materials, Faculty of Mechanical Engineering, Slovak University of Technology in Bratislava, Pionierska 15, Bratislava

831 02, Slovakia^1

Institute of Manufacturing Systems, Environmental Technology and Quality Management, Slovak University of Technology in Bratislava, Nám. Slobody 17, Bratislava

812 31, Slovakia^2

关键词: Crystal boundary;    Inverse proportions;    Micro-cutting;    Silicon nitride ceramics;    Sintering durations;    Volume loss;    Wear behaviours;    Wear test;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/174/1/012007/pdf
DOI  :  10.1088/1757-899X/174/1/012007

来源: IOP

【 摘 要 】

The effects of hot pressing parameters and mechanical properties on wear of silicon nitride ceramics were analyzed. The weakest microstructure constituent was the brittle crystal boundary phase that broke and chipped off during the wear tests. The volume loss of separate ceramic materials during the wear tests depended mainly in inverse proportion to the hardness of the ceramics. Both microcutting and microcracking mechanisms played a part in the wearing of Si3N4ceramics. Based on these experimental results the volume loss and also the wear resistance of the ceramics under study can be described by the model V ∼ HV-1.