t-ZrO2相变提高搪玻璃抗拉强度的研究

硅酸盐通报 ›› 2021, Vol. 40 ›› Issue (2): 622-629.

所属专题：玻璃

t-ZrO₂相变提高搪玻璃抗拉强度的研究

李志恒, 徐坤山, 许文友, 薛洪喜, 刘杰

烟台大学化学化工学院,烟台 264005

收稿日期:2020-08-24 修回日期:2020-09-16 出版日期:2021-02-15 发布日期:2021-03-10
通讯作者: 徐坤山,博士,讲师。E-mail:17911162@qq.com
作者简介:李志恒(1993—),男,硕士研究生。主要从事搪玻璃压力容器、无损检测方面的研究。E-mail:q15317@126.com
基金资助:
国家自然科学基金(51971192),山东省高等学校科技计划(J18KB007);山东省自然科学基金(ZR2020ME132)

Study on t-ZrO₂ Phase Transition to ImproveTensile Strength of Enamel

LI Zhiheng, XU Kunshan, XU Wenyou, XUE Hongxi, LIU Jie

College of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, China

Received:2020-08-24 Revised:2020-09-16 Online:2021-02-15 Published:2021-03-10

摘要/Abstract

摘要： 采用添加四方相氧化锆(t-ZrO₂)的方式增强搪玻璃涂层的力学性能,通过三点弯曲试验研究搪玻璃表面应变变化情况,对断裂截面进行XRD、SEM、拉曼分析。结果表明,添加适量t-ZrO₂改善了搪玻璃的表面形貌,减少了气孔数量。在三点弯曲试验中,2%t-ZrO₂质量含量的搪玻璃承受的最大力值提高了7 kN,在11 kN三点弯曲压力作用下出现裂纹,应变值提高约37%。含有t-ZrO₂搪玻璃试样的截面断裂前后发生t相到m相的相变,t-ZrO₂相与搪玻璃原始釉相的边界处出现裂纹的偏转,从而抑制裂纹扩展。

关键词: 搪玻璃, 氧化锆相变, 三点弯曲试验, 应变分析, 裂纹扩展

Abstract: The mechanical properties of the enamel coating were enhanced by adding tetragonal zirconium oxide (t-ZrO₂). The changes in the surface strain of the enamel were researched through a three-point bending experiment, and the fracture section is analyzed by XRD, SEM, and Raman. The results show that adding a proper amount of t-ZrO₂ improves the surface morphology of the enamel and reduces the number of pores. In the three-point bending experiment, the maximum force of the enamel with 2%t-ZrO₂ mass content increases by 7 kN. Cracks appear under the action of 11 kN three-point bending pressure, and the strain value increases by about 37%. The t-ZrO₂ enamel sample has a phase transition from t-ZrO₂ to m-ZrO₂ before and after the fracture. The crack deflection occurs at the boundary between the t-ZrO₂ phase and the original enamel phase, which restricts the crack propagate.

Key words: enamel, zirconia phase transition, three-point bending experiment, strain analysis, crack propagate

中图分类号:

TQ173

李志恒, 徐坤山, 许文友, 薛洪喜, 刘杰. t-ZrO₂相变提高搪玻璃抗拉强度的研究[J]. 硅酸盐通报, 2021, 40(2): 622-629.

LI Zhiheng, XU Kunshan, XU Wenyou, XUE Hongxi, LIU Jie. Study on t-ZrO₂ Phase Transition to ImproveTensile Strength of Enamel[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(2): 622-629.

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t-ZrO₂相变提高搪玻璃抗拉强度的研究

Study on t-ZrO₂ Phase Transition to ImproveTensile Strength of Enamel

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