Effects of Impregnation by Hydrolysate with Different Si/Al Ratio on High Temperature Properties of Silica-based Ceramic Cores

Wang Lili; Li Jiarong; Tang Dingzhong; Liu Shizhong; Yao Jiansheng; Gu Guohong

doi:10.15980/j.tzzz.2018.05.017

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Effects of Impregnation by Hydrolysate with Different Si/Al Ratio on High Temperature Properties of Silica-based Ceramic Cores
Vol. 38, Issue 5, Pages: 521-524(2018)
Published： 2018 ，
DOI： 10.15980/j.tzzz.2018.05.017

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[1]王丽丽,李嘉荣,唐定中,刘世忠,李鑫,牛书鑫.硅铝复合水解液对硅基陶瓷型芯高温性能的影响[J].特种铸造及有色合金,2018,38(05):521-524.

Wang Lili, Li Jiarong, Tang Dingzhong, et al. Effects of Impregnation by Hydrolysate with Different Si/Al Ratio on High Temperature Properties of Silica-based Ceramic Cores. [J]. Special Casting & Nonferrous Alloys 38(5):521-524(2018)
[1]王丽丽,李嘉荣,唐定中,刘世忠,李鑫,牛书鑫.硅铝复合水解液对硅基陶瓷型芯高温性能的影响[J].特种铸造及有色合金,2018,38(05):521-524. DOI： 10.15980/j.tzzz.2018.05.017.

Wang Lili, Li Jiarong, Tang Dingzhong, et al. Effects of Impregnation by Hydrolysate with Different Si/Al Ratio on High Temperature Properties of Silica-based Ceramic Cores. [J]. Special Casting & Nonferrous Alloys 38(5):521-524(2018) DOI： 10.15980/j.tzzz.2018.05.017.

摘要

以Si/Al质量比可调的硅铝复合水解液为研究对象

对硅基陶瓷型芯进行高温强化

并与硅酸乙酯水解液和硅溶胶强化的型芯进行性能对比。结果表明

采用Si/Al比为1∶3的硅铝复合水解液（SA13）强化后

型芯的密度、显气孔率、高温抗弯强度和抗变形能力介于硅酸乙酯水解液与硅溶胶之间;硅铝复合水解液（SA13）强化型芯的高温尺寸稳定性最佳

与单晶高温合金DD6接触的高温化学稳定性也有所提高。

Abstract

The properties of silica-based ceramic cores impregnated by the hydrolysate with different Si/Al ratio were analyzed comparatively for those of ethyl silicate hydrolysate（TOES）and Si-sol.The results reveal that the density

porosity

high temperature strength and the resistance of high temperature deformation of the ceramic cores impregnated by the composite hydrolysate with Si/Al ratio of 1∶3 are improved to some extent

and the values are between those of TOES and Si-sol.After impregnated by SA13

the cores present an optimal size stability and better high temperature chemical stability with DD6 superalloy.

关键词

硅基陶瓷型芯高温强化硅铝复合水解液

Keywords

Silica-based Ceramic CoresImpregnationHydrolysate with Different Si/Al Ratio

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