涂覆类cBN磨料性能研究  

Comparison of cBN Abrasive with Different Coatings

作　　者：李子成[1] 张爱菊[1] 李志宏[2] LI Zi-cheng;ZHANG Ai-ju;LI Zhi-hong(Hebei Province Higher Education Institution Applied Technology R＆D Center,Shijiazhuang Institute of Railway Technology,Shijiazhuang 050041,China;Key Laboratory of Advanced Ceramics and Machining Technology,Ministry of Education,Tianjin University,Tianjin 300072,China)

机构地区：[1]石家庄铁路职业技术学院河北省高校建筑结构应用技术研发中心,石家庄050041 [2]天津大学先进陶瓷与加工技术教育部重点实验室,天津300072

出　　处：《硅酸盐通报》2018年第4期1207-1212,共6页Bulletin of the Chinese Ceramic Society

基　　金：2015年度河北省科技计划项目支持(15211504);2016年度河北省高等学校科学技术研究青年基金支持(QN2016250);2017年度河北省科技计划项目支持(17211118)

摘　　要：对比了几种涂覆类cBN磨料的性能及其应用于陶瓷结合剂磨具的性能,通过扫描电子显微镜(SEM)、差热--热重分析仪(DSC-TG)及力学性能测试仪对其进行表征,结果发现:刚玉涂覆cBN磨料的力学性能和热稳定性没有劣化,但与陶瓷结合剂制成磨具抗折强度降低;钛涂覆cBN磨料陶瓷结合剂磨具抗折强度提高,但钛涂覆后cBN磨料力学性能和热稳定性变差;玻璃涂覆cBN磨料的力学性能和热稳定性有所提高,其与陶瓷结合剂在界面处结合紧密,增强了二者之间的把持力,提高了其磨削性能。By using scanning electron microscopy （ SEM ） , differential scanning calorimetry- thermogravimetry （DSC-TG） and mechanical strength tester, the properties of cBN abrasive with different coatings for vitrified cBN grinding tools were compared. The result shows that the thermal and mechanical properties of cBN grains with corundum coating are not significantly changed, but the bend strength is decreased for vitrified cBN grinding tool. The bend strength of titanium coated cBN grains for vitrified grinding tool is increased, but the thermal and mechanical properties of titanium coated cBN grains are worse than before. The thermal and mechanical properties of cBN grains with glass coating are increased.The interface of abrasive and vitrified bond is strengthened and the grinding performance is improved.

关 键 词：CBN 涂覆 陶瓷结合剂 

分 类 号：TQ174[化学工程—陶瓷工业]