放电等离子烧结（SPS）对BaTiO₃/3Y-TZP复合材料微观结构和力学性能的影响

The Effects of Spark-Plasma Sintering (SPS) on the Microstructure and Mechanical Properties of BaTiO₃/3Y-TZP Composites.

作者信息

Li Jing, Cui Bencang, Wang Huining, Lin Yuanhua, Deng Xuliang, Li Ming, Nan Cewen

机构信息

State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.

Department of Periodontics, Hospital of Stomatology Wenzhou Medical University, Wenzhou 325027, China.

出版信息

Materials (Basel). 2016 Apr 28;9(5):320. doi: 10.3390/ma9050320.

DOI:10.3390/ma9050320

PMID:28773445

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5503054/

Abstract

Composite ceramics BaTiO₃/3Y-TZP containing 0 mol %, 3 mol %, 5 mol %, 7 mol %, and 10 mol % BaTiO₃ have been prepared by conventional sintering and spark-plasma sintering (SPS), respectively. Analysis of the XRD patterns and Raman spectra reveal that the phase composition of -ZrO₂, -ZrO₂, and BaTiO₃ has been obtained. Our results indicate that SPS can be effective for the decrease in grain size and porosity compared with conventional sintering, which results in a lower concentration of -ZrO₂ and residual stress. Therefore, the fracture toughness is enhanced by the BaTiO₃ phase through the SPS technique, while the behavior was impaired by the piezoelectric second phase through conventional sintering.

摘要

分别通过传统烧结和放电等离子烧结（SPS）制备了分别含有0摩尔％、3摩尔％、5摩尔％、7摩尔％和10摩尔％BaTiO₃的复合陶瓷BaTiO₃/3Y-TZP。XRD图谱和拉曼光谱分析表明，已获得了-ZrO₂、-ZrO₂和BaTiO₃的相组成。我们的结果表明，与传统烧结相比，SPS对于减小晶粒尺寸和孔隙率是有效的，这导致-ZrO₂的浓度和残余应力较低。因此，通过SPS技术，BaTiO₃相提高了断裂韧性，而通过传统烧结，压电第二相削弱了这种性能。