CA-MQL grinding of zirconia engineering ceramics under precompressive stress

卷:126

Article

关键词: MINIMUM QUANTITY LUBRICATION;    HARD-BRITTLE MATERIALS;    SILICON;   

DOI  :  10.1007/s00170-023-11416-y

来源: SCIE

【 摘 要 】

Engineering ceramics are widely used in aerospace, 3C electronics, life sciences and other fields. However, the hard brittleness of engineering ceramics makes it difficult to process, prone to damage during processing, and difficult to balance processing efficiency and quality. In this paper, the grinding experiments of zirconia ceramics were carried out by applying precompressive stress under CA-MQL (Cold Air Minimal Quantity Lubrication, CA-MQL). The grinding force, surface morphology, subsurface damage, residual stress and roughness of zirconia ceramics under CA-MQL and traditional wet lubrication (WET) at multiple grinding depths were compared under precompressive stress of 0 MPa, 200 MPa and 400 MPa. The results show that CA-MQL significantly improves the grinding surface quality when the grinding depths are 30 mu m and 50 mu m compared with WET. The optimized surface roughness of 400 MPa precompressive stress combined with CA-MQL grinding reaches 17.12%. Precompressive stress significantly reduces the surface residual compressive stress by up to 32.8%.

【 授权许可】

Free