矿化剂加入量及硅溶胶浓度对陶瓷型壳性能的影响

稀有金属材料与工程, 2009, 38(z2): 1222-1225.

矿化剂加入量及硅溶胶浓度对陶瓷型壳性能的影响

姚建省 ^1, , 刘晓光 ^2, , 唐定中 ^3, , 齐长见 ^4,

1.北京航空材料研究院,北京,100095

2.北京航空材料研究院,北京,100095

3.北京航空材料研究院,北京,100095

4.北京航空材料研究院,北京,100095

基金项目: 国防基础科研项目(B0520060458)

关键词：陶瓷型壳 , 矿化剂 , 硅溶胶 , 流变性能 , 力学性能

Effect of Proportion of Mineralizer and Concentration of Silica Sol on Properties of Ceramic Shell

Yao Jiansheng ^1, , Liu Xiaoguang ^2, , Tang Dingzhong ^3, , Qi Changjian ^4,

1.北京航空材料研究院,北京,100095

2.北京航空材料研究院,北京,100095

3.北京航空材料研究院,北京,100095

4.北京航空材料研究院,北京,100095

Keywords： ceramic shell , mineralizer , silica sol , rhelolgical properties , mechanical properties

采用不同比例矿化剂用量及不同浓度的硅溶胶配制涂料,按照一定工艺制得陶瓷型壳试样,研究了涂料的流变性能,型壳的力学性能及其高温抗蠕变性能.实验结果表明,随着矿化剂加入量增加,陶瓷型壳的力学性能及高温抗蠕变性能随之增加;随着硅溶胶浓度的增加,涂料的粘度及剪切应力逐渐增加,浓度为25% (体积分数,下同)的硅溶胶制得的陶瓷型壳高温强度及高温抗蠕变性能优越.

Employing different proportion of mineralizer and different concentration of silica sol, the ceramic shells were prepared. The rheological properties of slurry, mechanical properties and the gravitational distortion of ceramic shell at high temperature were investigated. The experiment results indicate that the strength and creep resistant properties of ceramic shell at 1500 ℃ were enhanced by increasing the proportion of mineralizer. With increasing concentration of silica sol, the viscosity and shear stress were raised. The ceramic shell obtained from 25 vol%. silica sol could realize optimum mechanical properties and creep resistant properties at high temperature.

参考文献

[1]	张勇.矿化剂对型壳莫来石及岩相组织的影响[J].材料工程,1997(05):31.
[2]	Smith PA.;Haber RA. .EFFECT OF PARTICLE PACKING ON THE FILTRATION AND RHEOLOGY BEHAVIOR OF EXTENDED SIZE DISTRIBUTION ALUMINA SUSPENSIONS[J].Journal of the American Ceramic Society,1995(7):1737-1744.
[3]	朱新文,江东亮,谭寿洪,张兆泉.氧化铝粉体在硅溶胶中分散行为的研究[J].硅酸盐学报,2001(03):263-266.

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