不锈钢坩埚在惰性气氛下的腐蚀试验

SOLARPACES 2018: International Conference on Concentrating Solar Power and Chemical Energy Systems Pub Date : 2019-07-26 DOI:10.1063/1.5117719

S. Bell, G. Will, T. Steinberg

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引用次数: 2

摘要

熔盐共晶作为相变材料(PCMs)在热储能(TES)系统中有潜在的应用，但是熔融温度超过400°C的共晶盐在空气环境下具有很强的腐蚀性。提出了一种惰性气氛下的测试方法，并讨论了在熔点630℃左右的等温和热循环条件下对两种盐(NaCl/Na2CO3和NaCl/Na2SO4)的测试结果。铬氧化物存在于盐/金属界面，而铁和镍则停留在金属相。

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Corrosion testing under inert atmosphere with stainless steel crucibles

Molten salt eutectics have potential applications in Thermal Energy Storage (TES) systems as Phase Change Materials (PCMs), however eutectic salts with melting temperatures above 400°C are highly corrosive under air atmospheres. A method for testing under inert atmosphere is presented and results from testing under isothermal and thermal cycling conditions for two salts (NaCl/Na2CO3 and NaCl/Na2SO4) with melting temperatures of around 630°C are discussed. Chromium oxides were present at the salt/metal interface whilst iron and nickel remained in metal phase.

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SOLARPACES 2018: International Conference on Concentrating Solar Power and Chemical Energy Systems

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