烧结工艺对涂覆法制备Y-Ce-La-TZP陶瓷微观结构与力学性能的影响

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (935 KB) HTML (0 KB)
输出: BibTeX | EndNote (RIS)

摘要采用新型涂覆法,将Y(NO₃)₃、Ce(NO₃)₃和La(NO₃)₃混合溶液涂覆于ZrO₂表面,制备多元稀土共掺杂的ZrO₂陶瓷粉体,再通过无压烧结制备1.5Y-5.5Ce-0.3La-TZP(摩尔分数,%)块体材料,研究烧结温度、保温时间和升温速率对ZrO₂陶瓷相对密度、显气孔率、线收缩率、相变转化、力学性能以及显微组织的影响。结果表明：随烧结温度升高,单斜相ZrO₂含量减少,当烧结温度为1 550 ℃时,单斜相含量几乎为0,四方相的稳定化程度达到最大;在1 200~1 450 ℃烧结温度下,降低升温速率有利于陶瓷的烧结致密化。在1 550 ℃保温90 min的ZrO₂陶瓷的相对密度、抗弯强度、硬度(HV₁₀)以及断裂韧性均达到最大,分别为98.8%、1 001.3 MPa、1 124.3和10.81 MPa·m^1/2。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	吴飞
	刘允中
	朱康乐

关键词 ：氧化锆陶瓷, 烧结温度, 保温时间, 升温速度, 微观组织, 力学性能

Abstract：Zirconia powders Co-doped with multiple rare earths were prepared by coating Y(NO₃)₃, Ce(NO₃)₃and La(NO₃)₃ on the surface of ZrO₂ by a novel coating method, and then 1.5Y-5.5Ce-0.3La-TZP tetragonal zirconia bulk materials were prepared by pressureless sintering. The effects of sintering temperature,holding time and heating rate on the relative density, apparent porosity, linear shrinkage, phase transformation, mechanical properties and microstructures of zirconia ceramics were studied. The results show that the content of monoclinic phase decreases with the increase of sintering temperature. When the sintering temperature is 1 550 ℃, the content of monoclinic phase is almost zero, and the degree of tetragonal phase stabilization reaches the maximum. At the sintering temperature of 1 200-1 450 ℃, decreasing the heating rate is beneficial to the densification of ceramics. The relative density, bending strength, hardness (HV₁₀) and fracture toughness of ZrO₂ceramics reach the maximum at 1 550 ℃ for 90 min, which are 98.8%, 1 001.3 MPa, 1 124.3 and 10.81 MPa·m^1/2, respectively.

Key words： zirconia ceramics sintering temperature holding time heating rate microstructure mechanical property

收稿日期: 2021-01-22 出版日期: 2021-07-21

ZTFLH:

TQ174.75

基金资助:广东省科技计划资助项目(2016A020220005)

通讯作者: 刘允中,教授,博士。电话：020-87110081;E-mail: yzhliu@scut.edu.cn

引用本文:

吴飞, 刘允中, 朱康乐. 烧结工艺对涂覆法制备Y-Ce-La-TZP陶瓷微观结构与力学性能的影响[J]. 粉末冶金材料科学与工程, 2021, 26(3): 202-210.
WU Fei, LIU Yunzhong, ZHU Kangle. Effects of sintering process on microstructures and mechanical properties of Y-Ce-La-TZP ceramics prepared by coating method. Materials Science and Engineering of Powder Metallurgy, 2021, 26(3): 202-210.

链接本文:

http://pmbjb.csu.edu.cn/CN/ 或 http://pmbjb.csu.edu.cn/CN/Y2021/V26/I3/202

[1] GUPTA N, MALLIK P, BASU B.Y-TZP ceramics with optimized toughness: Newresults[J]. Journal of Alloys & Compounds, 2004, 379(1): 228-232.
[2] 马晴, 施丽燕, 黄思雪, 等. 氧化锆陶瓷在牙体修复领域的研究现状及展望[J]. 中国组织工程研究, 2021, 25(22): 3597-3602.
MA Qing, SHI Liyan, HUANG Sixue, et al.Research status and prospect of zirconia ceramics in dental restoration[J]. Journal of Clinical Rehabilitative Tissue Engineering Research, 2021, 25(22): 3597-3602.
[3] ZHU W, FUJIWARA A, NISHIIKE N, et al.Transition metals increase hydrothermal stability of yttria-tetragonal zirconia polycrystals[J]. Journal of the European Ceramic Society, 2018, 38(10): 3573-3577.
[4] 敖红敏, 俞耀伦, 龙志奇, 等. 超细锆基复合氧化物粉体制备方法概述[J]. 稀有金属, 2013, 37(2): 302-311.
AO Hongmin, YU Yaolun, LONG Zhiqi, et al.Overview of preparation methods of ultrafine zirconium based composite oxide powder[J]. Chinese Journal of Rare Metals, 2013, 37(2): 302-311.
[5] 张哲, 郑彧, 童亚琦, 等. 液相法在陶瓷粉体合成中的应用[J].硅酸盐通报, 2019, 38(7): 2104-2108.
ZHANG Zhe, ZHENG Yu, TONG Yaqi, et al.Application of liquid phase method in synthesis of ceramic powders[J]. Bulletin of the Chinese Ceramic Society, 2019, 38(7): 2104-2108.
[6] 袁正希, VLEUGELS J, VAN DER BIEST O. Y₂O₃液相掺杂 ZrO₂ 粉体的制备及其特性[J]. 硅酸盐学报, 2001, 29(5): 488-491.
YUAN Zhengi, VLEUGELS J, VAN DER BIEST O. Preparation and properties of Y₂O₃ liquid doped ZrO₂ powder[J]. Journal of the Chinese Ceramic Society, 2001, 29(5): 488-491.
[7] VLEUGELS J, YUAN Z, VAN DER BIEST O. Mechanical properties of Y₂O₃/Al₂O₃-coated Y-TZP ceramics[J]. Journal of the European Ceramic Society, 2002, 22(6): 873-881.
[8] HUANG S G, VLEUGELS J, LI L, et al.Composition design and mechanical properties of mixed (Ce,Y)-TZP ceramics obtained from coated starting powders[J]. Journal of the European Ceramic Society, 2005, 25(13): 3109-3115.
[9] 李双, 孟兆禄, 谢志鹏. 基于振荡压力烧结的氧化锆陶瓷水热老化行为[J]. 硅酸盐学报, 2020, 48(3): 391-398.
LI Shuang, MENG Zhaolu, XIE Zhipeng.Hydrothermal aging behavior of zirconia ceramics based on oscillating pressure sintering[J]. Journal of the Chinese Ceramic Society, 2020, 48(3): 391-398.
[10] FANG PA, GU H, WANG P L, et al.Effect of powder coating on stabilizer distribution in CeO₂-stabilized ZrO₂ ceramics[J]. Journal of the American Ceramic Society, 2005, 88(7): 1929-1934.
[11] ZENG Z Y B, LIU Y Z, ZHANG Y X, et al. Ferroelastic domain switching toughening in Ce-Y-La co-stabilized zirconia ceramics obtained from coated starting powders[J]. Journal of Alloys and Compounds, 2020, 820: 1-8.
[12] XU T, VLEUGELS J, VAN DER BIEST O, et al. Fabrication and characterization of (Nd,Y)-TZP ceramics from stabilizer- coatednanopowder[J]. Materials Letters, 2004, 58(26): 3353-3357.
[13] KERN F, STRUMBERGER H, GADOW R.Effects of stabilizer content and sintering conditions on Y-TZP. ceramics made from stabilizer-coated nanopowders[J]. Journal of Ceramic Science and Technology, 2017, 9(1): 7-18.
[14] ZHANG W, BAO J, SONG X, et al.The effect of La₂O₃ on the microstructure and mechanical properties of 12Ce-TZP[J]. Ceramics International, 2018, 44(6): 6713-6718.
[15] ZHANG F, CHEVALIER J, OLAGNON C, et al.Slow crack growth and hydrothermal aging stability of an alumina- toughened zirconia composite made from La₂O₃-doped 2Y-TZP[J]. Journal of the European Ceramic Society, 2017, 37(4): 1865-1871.
[16] 施剑林. 固相烧结-I气孔显微结构模型及其热力学稳定性, 致密化方程[J]. 硅酸盐学报, 1997, 25(5): 499-514.
SHI Jianlin.Solid-phase sintering-I pore microstructure model and its thermodynamic stability, densification equation[J]. Journal of the Chinese Ceramic Society, 1997, 25(5): 499-514.
[17] 李翔, 张秀香, 戴姣燕, 等. 氧化锆陶瓷应力诱导相变增韧机理研究[J]. 粉末冶金技术, 2015, 33(6): 403-406.
LI Xiang, ZHANG Xiuxiang, DAI Jiaoyan, et al.Study on toughening mechanism of zirconia ceramics by stress induced phase transformation[J]. Powder Metallurgy Technology, 2015, 33(6): 403-406.