La2O3添加量对BaZrO3基陶瓷型芯性能的影响

尹自强; 杨治刚; 赵志佳; 陈搏; 马世卿; 于刚; 余建波; 任忠鸣

doi:10.15980/j.tzzz.2021.10.024

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La₂O₃添加量对BaZrO₃基陶瓷型芯性能的影响
Effects of Lanthanum Oxide Contents on Properties of Barium Zirconate Based Ceramic Core
2021年41卷第10期页码：1303-1305
纸质出版日期： 2021 ，
DOI： 10.15980/j.tzzz.2021.10.024

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尹自强, 杨治刚, 赵志佳, 等. La₂O₃添加量对BaZrO₃基陶瓷型芯性能的影响[J]. 特种铸造及有色合金杂志, 2021,41(10):1303-1305.

Yin Ziqiang, Yang Zhigang, Zhao Zhijia, et al. Effects of Lanthanum Oxide Contents on Properties of Barium Zirconate Based Ceramic Core[J]. Special Casting & Nonferrous Alloys, 2021,41(10):1303-1305.
尹自强, 杨治刚, 赵志佳, 等. La₂O₃添加量对BaZrO₃基陶瓷型芯性能的影响[J]. 特种铸造及有色合金杂志, 2021,41(10):1303-1305. DOI： 10.15980/j.tzzz.2021.10.024.

Yin Ziqiang, Yang Zhigang, Zhao Zhijia, et al. Effects of Lanthanum Oxide Contents on Properties of Barium Zirconate Based Ceramic Core[J]. Special Casting & Nonferrous Alloys, 2021,41(10):1303-1305. DOI： 10.15980/j.tzzz.2021.10.024.

摘要

以BaZrO

为基体材料

通过改变La

的添加量

研究其对BaZrO

基陶瓷型芯性能的影响。结果表明

随着La

添加量的增多

型芯试样的线收缩和体积密度逐渐减小

气孔率逐渐增大

抗弯强度逐渐降低

高温挠度先减小后增大。当La

的添加量为5%时

型芯试样具有较高抗弯强度和更加优异的高温抗变形能力。

Abstract

The influence of lanthanum oxide contents on the properties of barium zirconate based ceramic cores were investigated by adjusting addition of lanthanum oxide. The results indicate that as the addition of lanthanum oxide increases

the linear shrinkage and bulk density of the core specimens are gradually decreased

and the apparent porosity is gradually increased

meanwhile the bending strength is gradually declined

and the high temperature deflection is firstly decreased and then increased. When the content of lanthanum oxide is 5%

the core specimens have an excellent high temperature deformation resistance with sufficient bending strength.