Effect of Pyrophyllite on the Mullite Generation in Ternary Porcelain System

摘要：

　　Promoting of mullite generation has been studied by replacing kaolinite with pyrophyllite because of mullite has excellent strength and thermal shock resistance.Effects of promoting of mullite generation and vitrification by replacing kaolinite with pyrophyllite on the mechanical and thermal properties were investigated.The addition of 45-55% pyrophyllite as a replacement of kaolinite (pyrophyllite (45-55%)-feldspar (30%)-clay (20%)) can vitrify samples (water absorption:0.05%,bulk density:2.66g/cm3) and improve the strength (122MPa) of samples fired at 1280℃.In ternary porcelain system,pyrophyllite-feldspar-clay,mullite generation of samples with 50% pyrophyllite reaches about 78.7% and thermal expansion coefficient is 5.4×10-6/K.Beyond 50% pyrophyllite addition,quartz and cristobalite phases increased.The thermal expansion coefficient of samples decreased with increasing of mullite amount.

关键词： Porcelain Pyrophyllite Kaolinite Mullite Vitrification

作者: J.H.Pee A.N.Kwak J.Y.Kim Y.J.Kim K.J.Kim

作者单位: Whiteware Ceramic Center,KICET,Icheon 467-843,Korea Engineering Ceramic Center,KICET,Icheon 467-843,Korea

会议类型: 国际会议

会议名称: The Seventh China International Conference on High-Performance Ceramics (第七届先进陶瓷国际研讨会(CICC-7))

会议地点: 厦门

会议语种:英文

页码: 575-579

在线出版日期: 2011-11-04（万方平台首次上网日期，不代表论文的发表时间）