摘要
采用化学共沉淀法制备ＺｒＯ＿２－ＭｇＯ－Ｙ＿２Ｏ＿３系和ＺｒＯ＿２－ＭｇＯ－Ｙ＿２Ｏ＿３－Ａｌ＿２Ｏ＿３系均匀超细活性粉末，经化学组成和显微结构设计，获得了固溶温度小于等于１５５０℃且致密饶结的微晶ＰＳＺ复相陶瓷，其常温抗弯强度为７６６ＭＰａ，断裂韧世Ｋ＿（１ｃ）为１２．５ＭＰａ·ｍ￣（１／２）。研究了ＭｇＯ和Ａｌ＿２Ｏ＿３以及１１００℃热处理时间对材料显微结构、相组成和力学性能的影响。
The uItra-fine active powder of ZrO_2-MgO-Y_2O_3 and ZrO_2-MgO-Y_2O_3-Al_2O_3 systems wasprepared by chemical coprecipitation method, The fine-grained PSZ ceramics sintered at low solid solution tem-perature (≤1550℃) was obtained by means of composition and microstructure design. The flexural strength andfracture toughness at room temperature were 766MPa and 12.5MPa·m￣(1/2) , respectively.The effects of MgO, Al_2O_3, and ageing time at 1100℃ on the phase composition, microstructure and mechanical properties of the ma-terials were studied.
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
1995年第5期495-500,共6页
Journal of The Chinese Ceramic Society
