硅酸盐学报2011，Vol.39Issue(2)：273-277,284,6.
添加钾长石对镁掺杂钛酸铝陶瓷烧结及热膨胀行为和抗弯强度的影响
Effects of Potassium Feldspar Additives on the Sintering and Expansion Behavior and Fracture Strength of Magnesium-Doped Aluminum Titanate Ceramics
摘要
Abstract
Aluminum titanate ceramics with both moderate high strength and low thermal expansion were prepared by using Mg-doped aluminum titanate solid solution powders as raw material and potassium feldspar as sintering additives. The effects of potassium feldspar additives on the sintering behavior, microstructure, mechanical property and thermal expansion behavior were investigated by observing the fracture morphology and measuring the density, fiacture strength and thermal expansion curve. The results reveal that the introduction of potassium feldspar facilitates the sintering of Mg-doped aluminum titanate ceramics. The aluminum titanate ceramic with 8％ in mass potassium feldspar prepared by sintering at 1440 ℃ for 4 h achieves a high relative density of 94％and simultaneously exhibits low thermal expansion coefficient of 0.94 x 10-6/℃ (room temperature -1 000 ℃) as well as moderate high strength of 44 MPa.关键词
陶瓷/钛酸铝/抗弯强度/热膨胀/钾长石Key words
ceramics/ aluminum titanate/ bending strength/ thermal expansion/ potassium feldspar.分类
化学化工引用本文复制引用
徐刚,何万波,张影,赵衍刚,柴伟,王一旭,张培,韩高荣..添加钾长石对镁掺杂钛酸铝陶瓷烧结及热膨胀行为和抗弯强度的影响[J].硅酸盐学报,2011,39(2):273-277,284,6.基金项目
浙江省自然科学基金(Y407043)资助项目. （Y407043）
