A unique SiC whisker wheel was invented,in which the whiskers were aligned normally to the grinding wheel surface.In this paper,grindabilities of the SiC whisker wheel are investigated and compared with those of other...A unique SiC whisker wheel was invented,in which the whiskers were aligned normally to the grinding wheel surface.In this paper,grindabilities of the SiC whisker wheel are investigated and compared with those of other wheels of SiC grains,Al2O3 grains,as well as Al2O3 long and short fibres which were also aligned normally to the grinding wheel surface,respectively.The main research contents concern grinding characteristics of a directionally aligned SiC whisker wheel such as material-removal volume,wheel-wear rates,integrity of the ground surfaces,grinding ratios and grinding efficiency.Furthermore,grinding wheels of whiskers and fibres have a common disadvantage:they tend to load easily.The authors have proposed a simple method of loading-free grinding to overcome this propensity and investigate some related grinding characteristics under loading-free grinding conditions.展开更多
A l2O3陶瓷具有耐高温、抗氧化、耐磨损等优良特性,但韧性低一直是阻碍其进一步应用的重要原因。本文分别通过颗粒弥散相增韧、纤维/晶须增韧、相变增韧、复合增韧以及自增韧等方法对A l2O3陶瓷的增韧研究进行了分类叙述,总结了高韧性...A l2O3陶瓷具有耐高温、抗氧化、耐磨损等优良特性,但韧性低一直是阻碍其进一步应用的重要原因。本文分别通过颗粒弥散相增韧、纤维/晶须增韧、相变增韧、复合增韧以及自增韧等方法对A l2O3陶瓷的增韧研究进行了分类叙述,总结了高韧性氧化铝陶瓷的制备、增韧机理、影响因素的研究进展。展开更多
文摘A unique SiC whisker wheel was invented,in which the whiskers were aligned normally to the grinding wheel surface.In this paper,grindabilities of the SiC whisker wheel are investigated and compared with those of other wheels of SiC grains,Al2O3 grains,as well as Al2O3 long and short fibres which were also aligned normally to the grinding wheel surface,respectively.The main research contents concern grinding characteristics of a directionally aligned SiC whisker wheel such as material-removal volume,wheel-wear rates,integrity of the ground surfaces,grinding ratios and grinding efficiency.Furthermore,grinding wheels of whiskers and fibres have a common disadvantage:they tend to load easily.The authors have proposed a simple method of loading-free grinding to overcome this propensity and investigate some related grinding characteristics under loading-free grinding conditions.
