The invention relates to a superplastic nano Y 2: ZrO ceramic material and preparation method thereof, belonging to the technical field of ceramic material preparation. The material with ZrO: 2 and Y: 2 O: 3 as the raw material, which is characterized in that the material formula was: ZrO: 2: 0.95 ~ 0.97, and Y 2: O: 3: 0.03 to 0.05, the proportion of the actual Moore the number of. Ball milling, drying, sieving, cold isostatic pressing, sintering at 1400 to 1500 DEG C in air atmosphere, and heat for 4 hours to 10 hours, at 300 to 1000 DEG C for grain refinement annealing, 10 ~ 50 hours. The grain size of less than 300nm - ZrO: nano Y 2 ceramic materials. The invention of the formula and the preparation method of the high temperature plastic deformation of nano Y ZrO down 2 ceramic grains, which has large plastic deformation at 1000 - 1200 DEG C, deformation amount reached more than 400%, and the preparation process is simple, low cost, suitable for industrialized production.
【技术实现步骤摘要】
本专利技术涉及一种制备超塑性纳米Y-ZrO2陶瓷材料及其制备方法,属于陶瓷材料制备
技术介绍
纳米ZrO2陶瓷材料,由于其具有大的塑性变形,使得其具有高温加工性能。由于在陶瓷粉料烧结过程中伴随有晶粒长大过程,常用的烧结方法很难制备出晶粒尺寸小的纳米ZrO2陶瓷材料。
技术实现思路
本专利技术的目的是提供一种制备工艺简单,具有高温塑性变形的纳米Y-ZrO2陶瓷材料及其制备方法。通过正常陶瓷烧结工艺,制备高密度微米ZrO2陶瓷材料,在较低温度进行晶粒细化退火处理,能够得到晶粒小于300nm的纳米ZrO2陶瓷材料,陶瓷材料在1000-1200℃具有大的塑性变形。本专利技术提出的超塑性纳米Y-ZrO2陶瓷材料,其特征在于该材料以ZrO2和Y2O3为原料,所述材料的配方为ZrO20.95~0.97,和Y2O30.03~0.05,其比例为实际摩尔数。本专利技术提出的纳米Y-ZrO2陶瓷材料的制备方法,其特征在于,该方法依次按如下步骤进行(1)分别称量按摩尔比为ZrO20.95~0.97,和Y2O30.03~0.05,进行配料;(2)将所配制的粉料进行球磨混料;(3)将混合 ...
【技术保护点】
超塑性纳米Y-ZrO↓[2]陶瓷材料,其特征在于:该材料以ZrO↓[2]和Y↓[2]O↓[3]为原料,所述材料的配方为:ZrO↓[2]:0.95~0.97,和Y↓[2]O↓[3]:0.03~0.05,其比例为实际摩尔数。
【技术特征摘要】
【专利技术属性】
技术研发人员:曾照强,胡晓清,
申请(专利权)人:清华大学,
类型:发明
国别省市:11[中国|北京]
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