冷等离子体射流处理后的K9玻璃力学性能试验研究  

Experimental study on mechanical properties of cold plasma processed K9 optical

作　　者：孟政[1] 刘新[2] 刘吉宇 吴鸣宇[1] 陈阳 MENG Zheng;LIU Xin;LIU Jiyu;WU Mingyu;CHEN Yang(Dalian Ocean University, Dalian 116300, Liaoning, China;Key Laboratory for Precision and Non-traditional Machining Technology of Ministry of Education, Dalian University of Technology, Dalian 116024, Liaoning, China)

机构地区：[1]大连海洋大学,辽宁大连116300 [2]大连理工大学,精密与特种加工教育部重点实验室,辽宁大连116024

出　　处：《金刚石与磨料磨具工程》2020年第5期85-89,共5页Diamond & Abrasives Engineering

基　　金：辽宁省科技厅博士启动基金项目(2019-BS-033);辽宁省教育厅科学研究一般项目(QL201723)。

摘　　要：为探究冷等离子体射流辅助处理K9玻璃的高效超精密切削的机理,用摩擦磨损试验机探究冷等离子体射流对K9玻璃/金刚石摩擦副摩擦磨损性能的影响;用万能试验机测试等离子体处理后的石英玻璃棒的弯曲强度;通过压痕和划痕试验得出材料的弹塑转变及塑脆转变的临界载荷。结果表明:射流对脆性材料力学性能的调控效果可保持20 h以上;经过冷等离子体处理后的K9玻璃,在加载过程中剪切力及正压力比较平稳,摩擦系数在0.09~0.12波动,变化不明显;冷等离子体射流对K9玻璃/金刚石摩擦副具有减摩作用,且可降低K9玻璃的弹塑转变临界载荷,延缓脆性材料受力产生塑脆转变断裂,增强材料塑性并降低其脆性。To explore the plasma jet to K9 optical,through the bending test and the indentation scratches test the mechanical properties of the processed K9 optical were studied.Firstly,surface properties of K9 glass/diamond materials were controlled of the K9 optical by cold plasma assisted cutting machining.And then a universal testing machine was used to test the bending strength of the plasma-treated quartz glass rod by three-point method.Finally,the critical loads of elastic-plastic transition and brittle transition are obtained by indentation and scratch test.The experimental results show that cold plasma jet for brittle materials the properties influence can be kept over 20 hours.During the loading process,the shear force and positive pressure of K9 glass treated by cold plasma are relatively stable,the friction coefficient fluctuates between 0.09 and 0.12,and the change is not obvious.And cold plasma jet for K9 glass/diamond materials friction pair can reduce the elastic-plastic transition of K9 optical critical load,ductile brittle fracture occurs when ductile brittle stress is delayed,reinforced material plasticity and reduce its brittleness.

关 键 词：等离子体射流 K9玻璃 摩擦磨损试验 弯曲试验 压痕划痕试验 

分 类 号：TG58[金属学及工艺—金属切削加工及机床]