Corrosion characteristics and mechanisms of ceramic coatings in subcritical and supercritical aqueous systems

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

Ceramics International Pub Date : 2025-06-01 DOI:10.1016/j.ceramint.2025.02.258

Yanhui Li , Qibo Wang , Wang Zhu , Shaoming Ding , Limei Xing , Zhouyang Bai , Yongzhen Wang

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引用次数: 0

Abstract

Ceramic coatings have emerged as a critical solution for combating severe degradation in sub/supercritical water (SCW) systems, integral to sustainable energy and waste management technologies. This paper investigates the corrosion resistance, failure mechanisms, and optimization strategies of various ceramic coatings, including oxide ceramics (Al₂O₃, ZrO₂, Cr₂O₃) and non-oxide ceramics. Comprehensive analyses reveal that grain boundary dissolution, phase transformations, and porosity-induced degradation are the primary drivers of coating failure under SCW conditions. The effectiveness of stabilizers such as Y₂O₃ and CeO₂ in improving phase stability and corrosion resistance is evaluated alongside advanced deposition techniques like electron beam physical vapor deposition (EB-PVD) for achieving dense, heat cycle-resistant coatings. Additionally, novel hybrid and multilayer designs are proposed to address thermal mismatch and stress-induced failures. This paper provides critical insights into material design and application strategies, contributing to developing durable ceramic coatings for sustainable industrial applications in extreme environments.

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陶瓷涂层在亚临界和超临界水溶液体系中的腐蚀特性和机理

陶瓷涂层已成为应对亚/超临界水（SCW）系统严重降解的关键解决方案，是可持续能源和废物管理技术的组成部分。本文研究了各种陶瓷涂层的耐蚀性、失效机制和优化策略，包括氧化陶瓷（Al2O3, ZrO2, Cr2O3）和非氧化陶瓷。综合分析表明，晶界溶解、相变和孔隙诱导降解是在超临界水条件下涂层失效的主要驱动因素。研究人员还评估了稳定剂（如Y2O3和CeO2）在改善相稳定性和耐腐蚀性方面的有效性，以及电子束物理气相沉积（EB-PVD）等先进沉积技术，以获得致密的耐热循环涂层。此外，提出了新的混合和多层设计，以解决热失配和应力引起的失效。本文为材料设计和应用策略提供了重要见解，有助于开发耐用的陶瓷涂层，用于极端环境下的可持续工业应用。

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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.