The corrosion and carburization behaviour of four austenitic stainless steels were evaluated in CO and CO+impurities (CH, CO and O) at 600 °C. Exposure to CO, CO+CH, and CO+CO environments showed poor corrosion resistance, especially in 316 grades with the spallation of CrO layer and breakaway corrosion. Conversely, materials showed improved corrosion resistance in CO+O environment with thin CrO layer. TEM analysis of 316LN revealed carbon-accumulated layer at the CrO–matrix interface for highly corrosive environments. The degradation of CrO adherency is correlated with the carbon-accumulated layer, resulting from the high carbon activity in CO, CO+CH, and CO+CO environments.

中文翻译：

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添加杂质CO2环境中奥氏体不锈钢的高温腐蚀和渗碳行为

在 600 °C 下评估了四种奥氏体不锈钢在 CO 和 CO+ 杂质（CH、CO 和 O）中的腐蚀和渗碳行为。暴露于 CO、CO+CH 和 CO+CO 环境中表现出较差的耐腐蚀性，特别是在 316 牌号中，出现 CrO 层剥落和断裂腐蚀。相反，具有薄 CrO 层的材料在 CO+O 环境中表现出更好的耐腐蚀性。 316LN 的 TEM 分析显示，在高腐蚀性环境下，CrO-基体界面处存在碳积累层。 CrO 粘附力的退化与碳积累层相关，这是由于 CO、CO+CH 和 CO+CO 环境中的高碳活性造成的。