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Surface quality and residual stress variation of ceramics after abrasive grinding under pre-compressive stress
Ceramics International ( IF 5.2 ) Pub Date : 2021-02-01 , DOI: 10.1016/j.ceramint.2020.09.203
Cezhi Du , Gaofeng Zhang , Hongjian Wang

Abstract Grinding surface quality and residual stress of Al2O3 and ZrO2 ceramics were investigated after grinding under pre-compressive stress. The damage induced by abrasive grinding on the Al2O3 and ZrO2 ceramics surface was decreased using a pre-compressive stress grinding method. Pre-compressive stress on ceramics was applied by a custom-made compressive stress loader before abrasive grinding. The surface quality of both the Al2O3 and ZrO2 ceramics was improved after pre-compressive stress grinding. However, the surface roughness of ZrO2 was lower than that of Al2O3 under the same grinding parameters. Surface residual stress variation is found to be related to both grinding depth and pre-compressive stress. After abrasive grinding with pre-compressive stress, the surface residual stress tended to be compressive. Furthermore, in both Al2O3 and ZrO2 ceramics, the residual compressive stress was higher at a grinding depth of 30 μ m under the same grinding parameters.

中文翻译:

预压应力下磨料磨削后陶瓷表面质量及残余应力变化

摘要 研究了Al2O3和ZrO2陶瓷在预压应力下磨削后的磨削表面质量和残余应力。使用预压应力磨削方法减少了磨料磨削对 Al2O3 和 ZrO2 陶瓷表面造成的损伤。在磨料研磨之前,通过定制的压应力加载器对陶瓷施加预压应力。经过预压应力磨削后,Al2O3 和 ZrO2 陶瓷的表面质量均得到改善。然而,在相同的磨削参数下,ZrO2 的表面粗糙度低于 Al2O3。发现表面残余应力变化与磨削深度和预压应力有关。预压应力磨料磨削后,表面残余应力趋于压应力。此外,
更新日期:2021-02-01
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