摘要
本文以γ-Al_2O_3和SiO_2为主要原料,Al F_3·3H_2O为助剂,采用固相反应法制备了莫来石晶须,对影响莫来石晶须长径比的主要因素(保温时间、烧结温度、氟化铝含量)进行了3因素4水平正交实验,并对实验结果进行了极差分析和方差分析,确定了影响因素的主次、显著性及最优方案。此外,从分散剂和酸腐蚀的影响两方面研究了制备的莫来石晶须的分散性能,获得了较优的晶须分散工艺。
Mullite whiskers were synthesized through solid reaction method using γ-Al2O3 and SiO2 as raw materials and AlF3.3H2O as additive. Three main factors, calcining temperature, holding time and AlF3.3H2O content, which affect the aspect ratio of the mullite whiskers were considered in an orthogonality test. The order, significance and optimal parameters for preparing mullite whiskers were determined through range analysis and variance analysis based on the orthogonality experiment results, and then the optimal parameters combination was also verified by test. The optimal dispersion parameters were obtained through studying on dispersant and acid etching which influenced the disperstiveness of the prepared mullite whiskers.
作者
田雪
李翠伟
武令豪
刘硕
李昊
邓娜娜
汪长安
TIAN Xue;LI Cui-Wei;WU Ling-Hao;LIU Shuo;LI Hao;DENG Na-Na;WANG Chang-An(School of Mechanical and Electronic Control Engineering, Beijing Jiaotong University, Beijing 100044, China;State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China)
出处
《现代技术陶瓷》
CAS
2018年第2期122-130,共9页
Advanced Ceramics
基金
国家自然科学基金(51472023)
关键词
莫来石晶须
合成
分散
正交实验
Mullite whiskers
Synthesis
Dispersion
Orthogonal experiment