Al_2O_3-ZrO_2-YAG复相粉末的低温合成研究  

Al_2O_3-ZrO_2-YAG Powder with Composite Phase Synthesized at Low Temperature

作　　者：邵刚勤[1] 周芙蓉[1] 段兴龙[1] 史晓亮[1] 封铁柱[1] 

机构地区：[1]武汉理工大学材料复合新技术国家重点实验室,武汉430070

出　　处：《人工晶体学报》2007年第3期617-620,共4页Journal of Synthetic Crystals

基　　金：教育部科学技术重点研究项目(No.105123)

摘　　要：用低温原位合成技术制备了Al2O3-ZrO2-YAG复相粉末,在1100℃,5h热处理后,Al-Zr-Y-O体系中的主相为ZrO2四方相,其余为无定形相,表明ZrO2抑制了Al2O3和YAG晶粒的生长,同时Al2O3和YAG抑制了ZrO2从四方相向单斜相的转变。在1580℃,1h热处理后,Al-Zr-Y-O体系中的复相组成为(115+90x)A l2O3+54(Y2O3)x.ZrO2+(32-36x)YAG,其中0≤x<0.88(mol)。Al2O3-ZrO2-YAG powder was prepared by low temperature in situ synthesis method. The results showed that the main phase in Al-Zr-Y-O system at 1l00℃ is tetragonal zirconia, while the others are amorphous phases. This indicates that the crystalline growth of Al2O3 and YAG are restrained by ZrO2, and the transformation of ZrO2 from a tetragonal phase to a monoclinic one is inhibited by Al2O3 and YAG. The phase composite in Al-Zr-Y-O system at 1580℃ is （115 ＋ 90x）Al2O3 ＋ 54 （Y2O3 ）x： ZrO2 ＋ （32 -36x）YAG,while 0≤x 〈0.88（mol）.

关 键 词：Al2O3-ZrO2-YAG 低温原位合成 钇铝石榴石 四方氧化锆 

分 类 号：TB32[一般工业技术—材料科学与工程]