| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain an inexpensive dense sintered compact of alumina ceramic at a sintering temperature of 1,400-1,450°C even in the case of a formulation composition using industrial alumina low or normal in soda cotent. <P>SOLUTION: The sintering aid component of 8-11 wt.% is added to 89-92 wt.% Al<SB>2</SB>O<SB>3</SB>of a main component, wherein 0.5-3 wt.% MgO is contained as the sintering aid component, obtaining the alumina sintered compact having wear resistance which has the peak of MgAl<SB>2</SB>O<SB>4</SB>at near 2θ=36.8° in X-ray diffraction. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
