Phase stability and thermophysical properties of CeO2-Re2O3 (ReEu, Gd, Dy, Y, Er, Yb) co-stabilised zirconia

IF 5.6 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Ceramics International Pub Date : 2023-07-01 DOI:10.1016/j.ceramint.2023.03.299

Jinshuang Wang , Mengdi Chen , Jiarui Sun , Mengqiu Hu , Xianjun Lu , Chaoxi Shu , Hao Zhang , Yinghui Wang

{"title":"Phase stability and thermophysical properties of CeO2-Re2O3 (ReEu, Gd, Dy, Y, Er, Yb) co-stabilised zirconia","authors":"Jinshuang Wang , Mengdi Chen , Jiarui Sun , Mengqiu Hu , Xianjun Lu , Chaoxi Shu , Hao Zhang , Yinghui Wang","doi":"10.1016/j.ceramint.2023.03.299","DOIUrl":null,"url":null,"abstract":"<div>A series of 16 mol% CeO2-2 mol% Re2O3 co-stabilised zirconia (ZrO2) (16Ce4ReSZ, Re<img>Eu, Gd, Dy, Y, Er, Yb) ceramic materials were synthesised using a chemical coprecipitation– high-temperature roasting method. Their phase structure, high-temperature phase stability, mechanical properties, thermal conductivity and coefficient of thermal expansion (CTE) were investigated. The results show that the ZrO2 tetragonal phase co-stabilised by CeO2 and Re3+ with a smaller radius has better stability. The 16Ce4ReSZ (Re<img>Dy, Y, Er, Yb) materials have high fracture toughnesses, low thermal conductivities, and high CTE values. As the radius of the Re3+ ions decreases, the lattice energy increased, while the lattice distortion decreases, the CTE decreases slightly and the thermal conductivity of the material increases slightly. Owing to the high phase stability of 16Ce4YbSZ, its mechanical properties are best after 100 h of sintering at 1400 °C.</div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"49 13","pages":"Pages 21634-21644"},"PeriodicalIF":5.6000,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Ceramics International","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0272884223008994","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}

引用次数: 2

Abstract

A series of 16 mol% CeO₂-2 mol% Re₂O₃ co-stabilised zirconia (ZrO₂) (16Ce4ReSZ, ReEu, Gd, Dy, Y, Er, Yb) ceramic materials were synthesised using a chemical coprecipitation– high-temperature roasting method. Their phase structure, high-temperature phase stability, mechanical properties, thermal conductivity and coefficient of thermal expansion (CTE) were investigated. The results show that the ZrO₂ tetragonal phase co-stabilised by CeO₂ and Re³⁺ with a smaller radius has better stability. The 16Ce4ReSZ (ReDy, Y, Er, Yb) materials have high fracture toughnesses, low thermal conductivities, and high CTE values. As the radius of the Re³⁺ ions decreases, the lattice energy increased, while the lattice distortion decreases, the CTE decreases slightly and the thermal conductivity of the material increases slightly. Owing to the high phase stability of 16Ce4YbSZ, its mechanical properties are best after 100 h of sintering at 1400 °C.

查看原文本刊更多论文

CeO2-Re2O3 (ReEu, Gd, Dy, Y, Er, Yb)共稳定氧化锆的相稳定性和热物理性质

采用化学共沉淀法-高温焙烧法制备了16 mol% CeO2-2 - mol% Re2O3共稳定氧化锆(ZrO2) (16Ce4ReSZ、ReEu、Gd、Dy、Y、Er、Yb)陶瓷材料。研究了它们的相结构、高温相稳定性、力学性能、导热系数和热膨胀系数。结果表明，由CeO2和Re3+共稳定的ZrO2四方相具有较好的稳定性，且半径较小。16Ce4ReSZ (ReDy, Y, Er, Yb)材料具有高断裂韧性，低导热系数和高CTE值。随着Re3+离子半径的减小，晶格能量增大，晶格畸变减小，CTE略有减小，材料导热系数略有增大。由于16Ce4YbSZ具有较高的相稳定性，其力学性能在1400℃烧结100 h后达到最佳。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Ceramics International 工程技术-材料科学：硅酸盐

CiteScore

9.40

自引率

15.40%

发文量

4558

审稿时长

25 days

期刊介绍： Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties. Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour. Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.