Microstructural and mechanical properties of Al-base coated EUROFER-97

IF 2.3 2区物理与天体物理 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Nuclear Materials and Energy Pub Date : 2024-07-18 DOI:10.1016/j.nme.2024.101711

Liberato Volpe, Tamsin Whitfield, Luke Hewitt, Joven Lim

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引用次数: 0

Abstract

Coolant-facing alloys in a tokamak will face harsh environments due to the synergistic effect of flowing coolant, dynamic mechanical loading, ionising radiation, and tritium embrittlement. Reduced activation ferritic/martensitic (RAF/M) EUROFER-97 is the primary candidate as the structural alloy for the breeder blanket to be used in DEMO reactor. Under fusion-like conditions, coatings are required to improve both its corrosion properties and act as a tritium permeation barrier (TPB) layer. In this study, Al-base self-passivating coatings have been investigated as possible solution to provide protection against corrosion and act as TPB layer. The aim of this study was to assess the adhesion properties between different self-passivating Al-base coatings as electroplated and chemical vapour deposited (CVD) coatings on a RAF/M EUROFER-97 under strain. These studies showed the high ductility of pure electroplated Al-coatings, whereas both CVD coatings cracked under the applied strain.

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铝基涂层 EUROFER-97 的微结构和机械性能

由于流动冷却剂、动态机械负载、电离辐射和氚脆性的协同作用，托卡马克中的冷却剂面合金将面临恶劣的环境。还原活化铁素体/马氏体（RAF/M）EUROFER-97 是 DEMO 反应堆所用增殖毯结构合金的主要候选材料。在类核聚变条件下，需要使用涂层来改善其腐蚀性能，并充当氚渗透屏障（TPB）层。在这项研究中，对铝基自钝化涂层进行了调查，作为提供防腐蚀保护并充当氚渗透屏障层的可能解决方案。本研究的目的是评估 RAF/M EUROFER-97 上不同自钝化铝基涂层（电镀涂层和化学气相沉积（CVD）涂层）在应变条件下的附着特性。这些研究表明，纯电镀铝涂层具有很高的延展性，而两种化学气相沉积涂层在施加应变时都会开裂。

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来源期刊

Nuclear Materials and Energy Materials Science-Materials Science (miscellaneous)

CiteScore

3.70

自引率

15.40%

发文量

175

审稿时长

20 weeks

期刊介绍： The open-access journal Nuclear Materials and Energy is devoted to the growing field of research for material application in the production of nuclear energy. Nuclear Materials and Energy publishes original research articles of up to 6 pages in length.