Abstract
At first, oxidation resistance of Al2O3 based ceramics having a single addition of different carbides was investigated, with the result that the ceramics containing SiC in powder(SiC) or whisker(SiC(w)) form showed the highest resistance to oxidation. Attending to this result, the following studies were made. Some properties of Al2O3-SiC ceramics was first studied. Then the improvement of sinterability of this ceramics due to adding SiO2 was studied. Next, cutting performance of Al2O3-SiC ceramics was examined in comparison with the other ceramics tools, and it was made clear that flank wear of Al2O3-SiC tool became larger and smaller than that of Al2O3-TiC tool and Al2O3- SiC(W) one, respectively. Finally, interfacial reaction between Ni and the three sorts of ceramics as above was studied to describe the phenomenon. The outlines of these results were shown.
