Effect of calcium carbonate on the thermal shock behavior of YSZ-based abradable sealing coatings

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

Ceramics International Pub Date : 2025-03-01 DOI:10.1016/j.ceramint.2024.12.271

Cong Li , Yadong Chai , Qianwen Wang , Shouyin Wei , Fei Du , Weiliang Yan , Gang Yan , Wei Liu , Li Yang , Yichun Zhou

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Abstract

Calcium carbonate (CaCO₃) is an innovative pore-former for fabricating the Yttria-Stabilized Zirconia (YSZ) abradable sealing coatings (ASCs). Both conventional YSZ + PHB and YSZ + CaCO₃ ASCs were fabricated by the atmospheric plasma spraying (APS). The spindle shaped CaCO₃ in granulated particles and XPS results of ASCs jointly confirm that CaCO₃ undergoes decomposition. Zr atoms in ZrO₂ have the potential to be substituted by Ca atoms, thereby giving rise to the formation of a YSZ@Ca solid solution. Density Functional Theory (DFT) and first principles molecular dynamics (AIMD) simulations have demonstrated that YSZ@Ca has a relatively high phase transition temperature and can exist stably. Compared with the conventional YSZ + PHB coating, due to the addition of Ca²⁺ which increases the phase transition temperature of YSZ, the residual stress of the YSZ + CaCO₃ coating has been significantly reduced, and thus the ASCs shows more excellent performance in the thermal shock resistance. This study not only deepens the understanding of the behavior of CaCO₃ during flame spraying, but also opens up a new path for the development of high-performance ASCs that can withstand extreme thermal cycles.

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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.