CeO2-ZrO2纳米复合粉体的原位自组装法制备及表征
Preparation and Characterization of CeO2-ZrO2 Nanocomposite Powders by in-situ Self-Assembly Method
宋志健 1刘世凯 1王嘉琳 1韩碧波 1孙亚光1
作者信息
- 1. 河南工业大学材料科学与工程学院,河南郑州 450001
- 折叠
摘要
针对氧化锆纳米复合材料组分分布不均和高温处理时晶粒异常长大等问题,本研究采用原位自组装法制备了CeO2-ZrO2纳米复合粉体,研究了CeO2的添加量、不同分散剂以及煅烧条件对Zr02粉体的相含量及微观形貌的影响.研究结果表明:在真空条件下煅烧,以聚醚P123作为分散剂、含有10％CeO2的ZrO2粉体对氧化锆四方相实现了全稳,并且其分散性良好,粒径为50～100 nm.真空煅烧中形成的碳可以有效防止CeO2-ZrO2纳米颗粒的异常长大.本文成果可望为高质量陶瓷纳米复合粉体的制备提供支持,具有广阔的应用前景.
Abstract
To address the problems of uneven component distribution of zirconia nanocomposites,abnormal grain growth during high temperature treatment,CeO2-ZrO2 nanocomposite powders were prepared by in-situ self-assembly method.The effects of CeO2 addition,different dispersants and calcination conditions on the phase con-tent and morphology of ZrO2 powders were studied.The results show that ZrO2 powders containing 10％CeO2 with polyether P123 as a dispersant achieve the complete stabilized of zirconia tetragonal phase when calcined under vacuum conditions.The dispersion of the powders is good,and its particle size is 50～100 nm.The carbon formed in vacuum calcination effectively prevents the abnormal growth of CeO2-ZrO2 nanoparticles.The present work provides support for the preparation of high-quality ceramic nanocomposite powders,and has broad applica-tion prospects.
关键词
原位自组装法/相稳定/CeO2-ZrO2/纳米复合粉体Key words
in-situ self-assembly method/phase stability/CeO2-ZrO2/nanocomposite powders引用本文复制引用
基金项目
河南省科技厅自然科学研究项目(222102230034)
出版年
2024
NETL
NSTL
万方数据