氯化鈉熱腐蝕之回顧

The NaCl-induced Hot Corrosion - A review

合金於氯化鈉之熱腐蝕行為，起因於氯氧化產生的氯，而後以氯化及再氧化之循環反應侵蝕合金。本文針對常見金屬氯化物、氧化物之熱力學性質作分析，探討氯化鈉熱腐蝕之各項反應式。此外，藉由Cr2O3形成合金、Al2O3形成合金之分類方式，針對不同的氯化鈉熱腐蝕試驗方式及其反應機制與其腐蝕形態、合金元素之作用等主題，進行文獻之回顧。

The NaCl-induced hot corrosion of alloys was initially caused by the Cl2 that resulted from the oxychloridation, and then attacked by the cyclic chloridation/reoxidation reactions. This paper introduced the chemical reaction on the hot corrosion through the thermodynamics properties of metal oxides and chlorides. This paper also reviewed the reaction mechanisms, corrosion morphologies, and the alloying-addition effects on the hot corrosion behavior of Cr2O3 and Al2O3 forming alloys.