Influence of Calcium Addition on the Chemical Durability of the Model Alumino-Silicate Glasses in Aqueous Solutions
The corrosion resistance of liquid phase sintered alumina ceramics in aqueous environments strongly depends on composition and chemistry of grain boundary glass formed during sintering.The chemical durability of model alumino-silicate glasses with various contents of CaO in aqueous solutions was therefore evaluated.Prepared glasses were corroded under hydrothermal conditions in deionized water under static conditions.The examination of surface morphology of corroded specimens after the contact with deionized water,together with the analysis of corrosion solution provided information on mechanism of dissolution of grain boundary glasses in LPS aluminas and confirmed that dissolution process is hindered duc to saturation of solution with respect to leached elements.The initial dissolution rates for studied glasses were determined.The results are applicable for optimization and enhancement of corrosion resistance of LPS alumina under hydrothermal conditions.
hydrothermal corrosion alumino-silicate glasses
GALUSKOV(A) Dagmar HNATKO Miroslav KRAXNER Jozef GALUSEK Du(s)an (S)AJGALíK Pavo(l)
Vitrum Laugaricio-Joint Glass Center of the IIC SAS,TnU AD,FChPT STU,and RONA,j.s.c.,Tren?ín,Slovak Institute of Inorganic Chemistry,Slovak Academy of Sciences,Bratislava,Slovak Republic
国际会议
The Seventh China International Conference on High-Performance Ceramics (第七届先进陶瓷国际研讨会(CICC-7))
厦门
英文
1009-1014
2011-11-04（万方平台首次上网日期，不代表论文的发表时间）