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OALib Journal期刊
ISSN: 2333-9721
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不添加烧结助剂制备透明的y{2}o{3}$陶瓷
Keywords: 无机非金属材料,氧化钇,纳米粉,沉淀法,煅烧
Abstract:
？以y$_{2}$o$_{3}$粗粉、碳酸氢铵、硝酸和氨水为原料,通过沉淀法制备了y$_{2}$o$_{3}$纳米粉体.发现沉淀工艺和煅烧温度显著影响y$_{2}$o$_{3}$纳米粉的颗粒大小和尺寸分布,从而影响烧结体的密度和透光性.用x射线衍射分析仪、透射电镜、图像分析仪等研究发现,ph=8时制得的沉淀先驱物经1000℃煅烧,可得到粒度为33nm,近球形,分散性好,尺寸分布窄的y$_{2}$o$_{3}$粉体.该粉体不加任何添加剂,在1700℃真空烧结4h可得到透明y$_{2}$o$_{3}$陶瓷.
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