通过 Yb2O3 和 Y2O3 共稳定 ZrO2 材料及不同工艺改善热循环-CMAS 试验下 TBC 的耐久性和投资失效行为

IF 5.1 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Ceramics International Pub Date : 2024-09-28 DOI:10.1016/j.ceramint.2024.09.250

Yangguang Liu , Wenkang Zhang , Weize Wang , Wei Liu , Ting Yang , Kaibin Li , Xiaoqin Zhang , Junhao Wang , Xiaofeng Zhao , Lirong Luo , Jin Yang , Chengcheng Zhang

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引用次数: 0

摘要

在极其复杂的条件下，延长热障涂层（TBC）的使用寿命是一项挑战。在本研究中，涂层结构的优化和涂层材料的选择有利于提高热循环-CMAS（钙-镁-氧化铝-硅酸盐）测试下 TBC 的使用寿命。利用热负荷下的计算模型，可以有效地获得不同层厚的多层镀膜，包括微纳米双尺度层、致密 YbYSZ 层（4.0 mol % Yb2O3 和 0.5 mol % Y2O3 共稳定 ZrO2）、多孔 YbYSZ 层和激光三维纹理层。根据相应的涂层结构和 YbYSZ 材料，评估了结合强度和热循环-CMAS 寿命，并与 YSZ（4.5 mol % Y2O3 稳定 ZrO2）涂层的结合强度和热循环-CMAS 寿命进行了比较。结果表明，具有多孔嵌入颗粒簇（PEPC）结构的 TBC 比 YSZ 涂层低。此外，带有网格纹理的多层涂层中的原始缺陷也会降低结合强度。在热循环-CMAS 试验中，具有点状纹理的多层涂层的使用寿命显著提高，其失效行为包括碎裂和块状剥离。这项研究强调，将材料改性和结构优化相结合是延长 TBC 寿命的一种可行策略。

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Improving the durability and investing failure behavior of TBCs under thermal cycling-CMAS test by Yb2O3 and Y2O3 co-stabilized ZrO2 materials and different processes

Under extremely complex conditions, extending the lifetime of thermal barrier coatings (TBCs) is a challenge. In the present study, optimization of the coating structure and selection of coating materials are beneficial for improving the lifetime of TBCs under thermal cycling-CMAS (calcium-magnesium-alumina-silicate) test. It is efficient to obtain different layer thicknesses of multi-layer coating, including the micro-nano dual-scale layer, the dense YbYSZ layer (4.0 mol % Yb₂O₃ and 0.5 mol% Y₂O₃ co-stabilized ZrO₂), the porous YbYSZ layer and the laser 3D texturing layer, using the computational model under thermal load. Based on the corresponding coating structure and YbYSZ material, bond strength and thermal cycling-CMAS lifetime are evaluated, and compared with those of YSZ (4.5 mol % Y₂O₃ stabilized ZrO₂) coating. The results reveal that TBCs with porous embedded particle cluster (PEPC) structure is lower than that of YSZ coating. In addition, the original defects in multi-layer coating with grid texture reduce the bond strength. The lifetime of multi-layer coatings with a punctate texture are significantly improved in the thermal cycling-CMAS test, and their failure behavior includes fragmented and bulk-like exfoliation. This study emphasizes that combination of materials modification and structure optimization are a promising strategy to extend lifetime of TBCs.

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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.