鉻鉬鋼於LiNO_3-NaNO_3-KNO_3共晶融鹽的熱腐蝕

本研究採用不同鉻含量之鉻鉬鋼（0、2.25、5、9、12 wt% Cr），於550℃氮氣保護氣氛之LiNO_3-NaNO_3-KNO_3共晶融鹽進行250、500與1000小時之靜滯腐蝕實驗，目的為探討鋼料鉻含量對於其於融鹽中的熱腐蝕行為影響。研究結果顯示，各鋼料的質量增重皆與腐蝕時間成正比，並且隨著鋼料鉻含量的增加，其質量增重大幅降低。鋼料腐蝕後的顯微結構分析顯示，各鋼料的腐蝕皮膜皆由外側LiFeO_2與內側（Fe,Cr）_3O_4組成，其厚度隨鋼料的鉻含量增加而減薄。綜觀本研究之結果，鋼料抵抗融鹽腐蝕的能力，在鉻含量達到9 wt%時可以得到大幅改善。

關鍵字

鉻鉬鋼；鉻含量；鋰-鈉-鉀共晶硝酸融鹽；熱腐蝕

並列摘要

This study investigated the effect of the chromium on the hot corrosion behavior of Cr-Mo steels in a mixed molten salt. The corrosion test was performed by immersing Cr-Mo steels with different chromium content (0, 2.25, 5, 9, 12 wt% Cr) in static molten LiNO_3-NaNO_3-KNO_3 eutectic salt at 550℃ for 250, 500 and 1000 hours with nitrogen cover gas. The results show the weight gains of the steels are directly proportional to the duration of time while those are inversely proportional to the chromium content. The microstructure analyses of the corroded steels show the corrosion scales on the steels are composed of an outer LiFeO_2 and an inner (Fe,Cr)_3O_4 layers. Also, the thickness of the scales decreased with increasing chromium content. According to the result of this study, it has been confirmed that the corrosion resistance of steels in the molten slat can be dramatically improved when the chromium content reached 9 wt%.

並列關鍵字

Cr-Mo steel ； Chromium content ； Molten LiNO_3-NaNO_3-KNO_3 eutectic salt ； Hightemperature corrosion

被引用紀錄

Chen, W. T. (2011). 電流應力下熱電模組銲點界面反應之研究 [doctoral dissertation, National Tsing Hua University]. Airiti Library. https://doi.org/10.6843/NTHU.2011.00326

Chu, C. Y. (2007). 結晶-無定形雙團鏈式共聚物摻合體之特殊結晶行為研究 [master's thesis, National Tsing Hua University]. Airiti Library. https://doi.org/10.6843/NTHU.2007.00659

廖廷嘉（2016）。添加回收矽粉於碳/碳複合材料應用於鋰離子電池負極材料之研究〔碩士論文，逢甲大學〕。華藝線上圖書館。https://doi.org/10.6341/fcu.M0327611

Pan, C. C. (2007). 氮化銦鎵紫外光發光二極體之研製 [doctoral dissertation, National Central University]. Airiti Library. https://www.airitilibrary.com/Article/Detail?DocID=U0031-0207200917351326

延伸閱讀

Tang, C. W. (2005). 鋁材高溫預浸置後三成分混酸陽極處理 [master's thesis, Tatung University]. Airiti Library. https://www.airitilibrary.com/Article/Detail?DocID=U0081-0607200917233772
陳以欽（2009）。後氧化處理對AISI H13工具鋼之熱熔損與腐蝕行為研究〔碩士論文，國立臺北科技大學〕。華藝線上圖書館。https://doi.org/10.6841/NTUT.2009.00520
何佩娟、林景崎、葛明德、吳成有、邱善得（2015）。銅與SS304不銹鋼基材電鍍披覆Cr-C後在釩電池正極電解液中之腐蝕行為。防蝕工程，29(3)，151-162。https://doi.org/10.6376/JCCE.201509_29(3).0005
Surzhenkov, A., Antonov, M., Goljandin, D., Vilgo, T., Mikli, V., Viljus, M., Latokartano, J., & Kulu, P. (2013). Sliding Wear of TiC-NiMo and Cr3C2-Ni Cermet Particles Reinforced FeCrSiB Matrix HVOF Sprayed Coatings. Estonian Journal of Engineering, 19(3), 203-211. https://www.airitilibrary.com/Article/Detail?DocID=17367522-201309-201310160041-201310160041-203-211
Hammami, O., Dhouibi, L., Berçot, P., Rezrazi, E. M., & Triki, E. (2012). Study of Zn-Ni Alloy Coatings Modified by Nano-SiO_2 Particles Incorporation. International Journal of Corrosion, 2012(), 79-86. https://doi.org/10.1155/2012/301392

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鉻鉬鋼於LiNO_3-NaNO_3-KNO_3共晶融鹽的熱腐蝕

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