The corrosion behavior of T92 in the environment characterized by the applied stress and NaCl–Na₂SO₄ molten salts was studied by scanning electron microscope and energy dispersion spectroscopy. The dissolution and precipitation of oxides in molten salts resulted in changes in the elemental distribution in corrosion scales. Moreover, the applied stress was found to accelerate the outward diffusion of Cr causing fast deformation of protective oxides because of the easy diffusion path available. On the contrary, applied stresses also compacted the corrosion layers and enlarge the gaps between layers. These two opposite effects indicate that there should be a threshold stress for corrosion relief.

中文翻译：

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外加应力和NaCl–Na2SO4熔融盐引起的T92铁素体钢高温腐蚀的差异

通过扫描电子显微镜和能谱分析研究了T92在以外加应力和NaCl-Na ₂ SO ₄熔融盐为特征的环境中的腐蚀行为。氧化物在熔融盐中的溶解和沉淀导致腐蚀尺度中元素分布的变化。此外，由于容易获得的扩散路径，发现所施加的应力会加速Cr的向外扩散，从而导致保护性氧化物快速变形。相反，施加的应力也压实了腐蚀层并扩大了层之间的间隙。这两个相反的作用表明应该有一个缓解腐蚀的阈值应力。