矽含量對鐵矽碳三元合金高溫氧化之影響

Effect of Si-Content on the High-Temperature Oxidation of Fe-Si-C Ternary Alloys in Dry Air

何日新(T. H. Ho) ； 謝心心(H. H. Hsieh) ； 開物(W. Kai) ； 梁哲誌(G. Z. Liang) ； 黃榮潭(R. T. Huang)

《防蝕工程》 22卷1期 (2008/03) Pp. 31-39

https://doi.org/10.6376/JCCE.200803.0031

摘要

本研究探討含三種不同矽含量(1, 3, 6Si)之鐵矽碳三元合金，在600~1000℃空氣下之氧化行爲。研究結果顯示，三種合金之氧化動力學呈現不規則趨勢，但氧化增重變化量皆隨溫度上升而增加；然而6Si合金之抗氧化性明顯優於其他合金。氧化後，三種合金主要生成氧化鐵(Fe2O3/Fe3O4)，並在氧化物內層有氧化鐵矽(Fe2SiO4)或氧化矽的富集區域生成。

關鍵字

鐵基合金 ； 矽含量 ； 高溫氧化

並列摘要

Effect of Si-content on the oxidation of three Fe-Si-C alloys containing 1Si, 3Si and 6Si was studied in dry air at 600~1000℃. The oxidation kinetics generally revealed complex and irregular in all cases, although the overall weight-gain data increased with increasing temperature. It was found that the 6Si-alloy exhibits the superior oxidation-resistance, as compared to the lower Si-content alloys. The scales formed on all alloys were composed of mostly Fe2O3/Fe3O4, while minor amounts of Fe2SiO4-or SiO2-enriched zone were observed in the scale/substrate interface.

並列關鍵字

Fe-base alloy ； Silicon-content ； High-temperature oxidation