Inhibiting hot corrosion of molten Li2CO3-Na2CO3-K2CO3 salt through graphitization of construction materials for concentrated solar power

被引：43

作者：

Grosu, Yaroslav ^{[1
]}

Anagnostopoulos, Argyrios ^{[2
]}

Navarro, Maria Elena ^{[2
]}

Ding, Yulong ^{[2
]}

Faik, Abdessamad ^{[1
]}

机构：

[1] Basque Res & Technol Alliance BRTA, Ctr Cooperat Res Alternat Energies CC EnergiGUNE, Alava Technol Pk,Albert Einstein 48, Vitoria 01510, Spain

[2] Univ Birmingham, BCES Birmingham Ctr Energy Storage, Birmingham, W Midlands, England

来源：

SOLAR ENERGY MATERIALS AND SOLAR CELLS | 2020年 / 215卷

基金：

英国工程与自然科学研究理事会;

关键词：

Corrosion; Molten salt; Concentrated solar power; THERMAL-ENERGY STORAGE; HIGH-TEMPERATURE CORROSION; ALUMINA-FORMING ALLOYS; ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY; AUSTENITIC STAINLESS-STEELS; HEAT-TRANSFER FLUIDS; NI-BASED ALLOYS; EUTECTIC SALT; CHLORIDE SALTS; NITRATE SALT;

D O I：

10.1016/j.solmat.2020.110650

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Next-generation concentrated solar power (CSP) plants are expected to work above the current temperature limit of 565 degrees C for the benefit of enhanced efficiency. This poses significant challenges in the construction materials, among others, in terms of corrosion. In this work, we investigate the spray-graphitization method to improve the compatibility of SS310 and SS347 with molten Li2CO3-Na2CO3-K2CO3 carbonate salt. Improved compatibility was observed due to the formation of protective carbonate or carbide layers on SS347 and SS310 surfaces, respectively. Detailed characterization of the corrosion products, including chemical reactions and wettability allowed the mechanism of anticorrosion protection to be proposed, which could be used for other construction materials in direct contact with high-temperature molten salts for next-generation CSP plants and beyond.

引用

页数：12

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