Rare-earth tantalates for next-generation thermal barrier coatings

IF 33.6 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Progress in Materials Science Pub Date : 2024-02-28 DOI:10.1016/j.pmatsci.2024.101265

Lin Chen , Baihui Li , Jing Feng

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Abstract

Ceramic thermal barrier coatings (TBCs) have attracted significant research attention owing to their utility in the thermally insulating alloy components of gas turbines and aircraft engines that operate at high temperatures. Most TBCs comprise yttria-stabilized zirconia (YSZ); however, YSZ no longer meets the demands of modern TBC applications due to its low working temperature and high thermal conductivity. It is therefore imperative to develop a ferroelastic ceramic to replace YSZ in TBC applications. Ferroelastic rare-earth tantalates (RETaO₄) possess many desirable properties, such as ferroelastic toughening, low thermal conductivity, high thermal expansion coefficients, and excellent comprehensive mechanical properties, and thus, they are promising next-generation TBCs, which are expected to operate at ultra-high temperatures (≥1600 °C). This review summarizes the thermophysical properties, CaO-MgO-AlO_1.5-SiO₂ (CMAS) corrosion resistance, coatings, and shortcomings of three types of tantalate ceramics (RETaO₄, RE₃TaO₇, and RETa₃O₉) and outlines the direction of future work in this field.

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用于下一代隔热涂料的稀土钽酸盐

陶瓷热障涂层（TBC）在高温下运行的燃气轮机和飞机发动机的隔热合金部件中的应用引起了研究人员的极大关注。大多数 TBC 由钇稳定氧化锆（YSZ）组成；然而，由于 YSZ 工作温度低、热导率高，它已无法满足现代 TBC 应用的要求。因此，当务之急是开发一种铁弹性陶瓷，以取代 YSZ 在 TBC 应用中的地位。铁弹性稀土钽酸盐（RETaO）具有许多理想的特性，如铁弹性增韧、低热导率、高热膨胀系数和优异的综合机械性能，因此是有望在超高温（≥1600 ℃）下工作的下一代 TBC。本综述总结了三种钽酸盐陶瓷（RETaO、RETaO 和 RETaO）的热物理性能、CaO-MgO-AlO-SiO（CMAS）耐腐蚀性、涂层和不足之处，并概述了该领域未来的工作方向。

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来源期刊

Progress in Materials Science 工程技术-材料科学：综合

CiteScore

59.60

自引率

0.80%

发文量

101

审稿时长

11.4 months

期刊介绍： Progress in Materials Science is a journal that publishes authoritative and critical reviews of recent advances in the science of materials. The focus of the journal is on the fundamental aspects of materials science, particularly those concerning microstructure and nanostructure and their relationship to properties. Emphasis is also placed on the thermodynamics, kinetics, mechanisms, and modeling of processes within materials, as well as the understanding of material properties in engineering and other applications. The journal welcomes reviews from authors who are active leaders in the field of materials science and have a strong scientific track record. Materials of interest include metallic, ceramic, polymeric, biological, medical, and composite materials in all forms. Manuscripts submitted to Progress in Materials Science are generally longer than those found in other research journals. While the focus is on invited reviews, interested authors may submit a proposal for consideration. Non-invited manuscripts are required to be preceded by the submission of a proposal. Authors publishing in Progress in Materials Science have the option to publish their research via subscription or open access. Open access publication requires the author or research funder to meet a publication fee (APC). Abstracting and indexing services for Progress in Materials Science include Current Contents, Science Citation Index Expanded, Materials Science Citation Index, Chemical Abstracts, Engineering Index, INSPEC, and Scopus.