液相浸渗法制备Y-TZP/LaPO4可加工复相陶瓷 |
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引用本文: | 周振君,杨正方,袁启明,李秀华. 液相浸渗法制备Y-TZP/LaPO4可加工复相陶瓷[J]. 中国稀土学报, 2002, 20(1): 30-34 |
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作者姓名: | 周振君 杨正方 袁启明 李秀华 |
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作者单位: | 天津大学高温结构陶瓷及工程陶瓷加工技术教育部重点实验室,天津,300072 |
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基金项目: | 教育部科学技术研究重点项目 |
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摘 要: | 通过往ZrO2多孔陶瓷浸渗LaPO4液态先驱液制备了具有可加工性的Y-TZP/LaPO4复相陶瓷。加入30%(体积分数)石墨可以得到具有35%(体积分数)开孔气孔率的ZrO2预烧结陶瓷体。采用不同浸渗和热分解周期可以得到不同LaPO4含量的Y-TZP/LaPO4复相陶瓷。研究了该材料的可加工性和力学性能。结果表明,含有3.5%-7.5%(体积分数)LaPO4的Y-TZP/LaPO4复相陶瓷具有良好的可加工性,同时保持优良的力学性能。
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关 键 词: | 稀土 LaPO4 Y-TZP 可加工性 液相浸渗法 力学性能 复相陶瓷 二次烧成 磷酸镧 二氧化锆 |
文章编号: | 1000-4343(2002)01-0030-05 |
修稿时间: | 2001-05-24 |
Preparation of Machinable Y-TZP/LaPO4 Composite Ceramics by Liquid Precursor Infiltration |
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Abstract: | A machinable Y TZP/LaPO 4 composite ceramic was prepared by infiltrating LaPO 4 liquid precursor into Y TZP porous ceramic. Sintered Y TZP ceramic preform with 35% (volume fraction) open pore volume was developed by adding graphite 30% (volume fraction). The Y TZP/LaPO 4 composite ceramics containing different LaPO 4 contents were obtained by infiltration and pyrolysis cycles. The machinability and mechanical properties of this material were investigated. The results show that the machinable Y TZP/LaPO 4 composite ceramics containing 2 3% to 7 5% (volume fraction) LaPO 4 has good machinability as well as maintaining outstanding mechanical properties. |
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Keywords: | rare earths lanthanum phosphate zirconia machinability liquid precursor infiltration mechanical property |
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