Dear Colleagues,

The challenges for structure materials in hostile environments have been baffling the development of many important industrial fields such as nuclear energy. In addition to acceptable mechanical properties, the compatibility with the environments is also a crucial requirement for the structure materials. In current light water reactors, the coolant, i.e. high temperature water, is hostile enough for many structure materials. As the nuclear reactor is being developed to the next generation, the service environment for materials will inevitably get harsher and even go to extreme. For example, the typical coolants used in generation Ⅳ reactor are supercritical water, high temperature gas, supercritical CO₂, liquid metal and molten salt. Not only will the ranges of operating temperature and the irradiation damage accumulated in materials greatly expand, but also the corrosiveness of environment will be drastically aggravated. These extreme environments pose great challenges to the materials available at present and demand the development of advanced structure material.

Metallic materials are still the basis for the implement of advanced reactors. Great research efforts have been made worldwide to develop metallic materials suitable for use in those extreme environments. In particular, high entropy alloys (HEAs) show some promising features such as high resistances to irradiation damage and corrosion. Additively manufactured materials have also received intensive attention due to the efficiency in manufacturing complex component as well as enhanced performance.

This special issue aims to compile recent progress in the corrosion behaviors of metallic materials in extreme environments (not limited to the above-mentioned coolants). The topic covers general corrosion, localized corrosion, oxidation, stress corrosion cracking, liquid metal embrittlement, and irradiation-assisted corrosion. Articles about corrosion test technique and corrosion simulation are also encouraged.

Prof. Dr. Wenjun Kuang
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

• metallic material
• high-entropy alloys
• additive manufacturing
• oxidation
• stress corrosion cracking
• irradiation-assisted corrosion
• liquid metal embrittlement
• extreme environments
• nuclear energy