标题：A Study on the Surface Microstructural Integrity of Ceramics Milled with Abrasive Waterjet
作者：Feng, Yanxia; Huang, Chuanzhen; Wang, Jun
作者机构：[Feng, Yanxia] Shandong Inst Light Ind, Sch Mech Engn, Jinan 250100, Peoples R China.; [Huang, Chuanzhen] Shandong Univ, Ctr Adv Jet Engineering Tec 更多
会议名称：International Conference on Surface Finishing Technology and Surface Engineering
会议日期：NOV 05-07, 2010
来源：SURFACE FINISHING TECHNOLOGY AND SURFACE ENGINEERING II
关键词：Abrasive waterjet milling; Ceramics; Microstructural integrity; Surface; residual stress; Surface hardness
摘要：In this paper, an experimental evaluation of the surface microstructural integrity of Si3N4 ceramics milled with abrasive waterjet was studied. The results show that the surface residual stress resulting from abrasive waterjet milling process for ceramics is compressive, and the compressive residual stress ranges from negative 203MPa to negative 19.6MPa. The results also show that the water pressure, the standoff distance, nozzle traverse speed and the lateral spacing have strong effects on the surface residual stress. The results also show that there is some enhancement in the hardness of AWJ milling surface, and it is affected by milling process parameters. The micro-topography of the milled surface cross section shows that there is a thin deteriorative layer in milled layer, in which no obvious crack is observed. Since the surface residual stress is compressive and the surface hardness increases, the milled surface deteriorative layer by AWJ could improve the surface quality.