Study on Indentation Experiments and Mechanical Behavior of RB-SiC

摘要：

　　In this work,we studied on the mechanical behavior of RB-SiC by the indentation experiments.The Vickers hardness tester and the laser scanning confocal microscope are used to process and observe the RB-SiC sample pieces.The indentations result shows that the hardness at the Si phase is lower than the SiC phase,thus it is easier to remove the Si than SiC.The morphology of indentations are complicated,there were no accumulation phenomenon at indentation edge.When the loading was 0.1kgf,0.2kgf and 0.3kgf,only the radical cracking can be observed and the cracking was not obvious at Si and SiC mixed phase.Avalanche crushed phenomenon occurred when the load increased to 0.4kgf.According to the Evans fracture toughness formula,the fracture toughness of SiC phase is about 2.5MPa-m1/2,and the fracture toughness of Si-SiC mixed phase is bigger than 3.0 MPa-m1/2.The critical cutting depth(dc)of RB-SiC was calculated by empirical formula presented by T.G.Bifano,and the value is 22.54nm.

作者: FAN Cheng ZHANG Shijie ZHAO Qizhi ZHANG Lei

作者单位: Jiangsu Provincial Key Labratory of Advanced Robotics & Collaborative Innovation Center of Suzhou Na College of Mechanical Science and Engineering,Jilin University,Changchun 130025

会议类型: 国际会议

会议名称: 2017 International Conference on Electronic Information Technology and Computer Engineering (EITCE 2017)(2017电子信息技术与计算机工程国际会议)(EITCE2017)

会议地点: 珠海

会议语种:英文

页码: 1-6

在线出版日期: 2017-09-23（万方平台首次上网日期，不代表论文的发表时间）