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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 李岳聯 | |
dc.contributor.author | Wei-Hsuan Huang | en |
dc.contributor.author | 黃韋瑄 | zh_TW |
dc.date.accessioned | 2021-06-08T03:58:08Z | - |
dc.date.copyright | 2018-08-21 | |
dc.date.issued | 2018 | |
dc.date.submitted | 2018-08-13 | |
dc.identifier.citation | [1] E. McCafferty, Introduction to corrosion science. 2010, Alexandria: Springer.
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dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/22017 | - |
dc.description.abstract | 高強度低合金鋼(High Strength Low Alloy Steels)由於具有優良的降伏強度、低溫韌性、可焊接性及抗蝕性,因此被廣泛使用在海洋工程領域及國防工業中,材料機械性質及抗蝕性為工程應用上必受重視之課題,特別在海洋工程中具有嚴苛的海洋腐蝕環境,通過添加微量合金提升鋼的機械性質及耐蝕性,通常會添加微量鉬、鉻、銅、鎳、鋁、矽等合金元素以提升抗蝕性,合金元素對於提升鋼的抗蝕性方法為:抑制其電化學反應,及促進表面保護層的生成以減緩鋼基材腐蝕速率。在本研究中,第一部份探討添加微量鎳及銅合金元素對於高強度低合金鋼抗蝕性影響,並且與商用S690Q海洋用鋼進行比較;第二部分為研究添加微量鎳及銅合金的高強度低合金鋼在不同熱處理後對於抗蝕性的影響。利用動電位極化曲線評估高強度低合金鋼在不同腐蝕環境下之抗蝕性,並利用表面分析技術:掃描式電子顯微鏡觀察腐蝕後表面形貌及腐蝕產物橫截面形貌,最後以X射線繞射分析、電子微探儀及X射線光電子能譜學鑑定腐蝕產物組成及合金元素分佈。電化學實驗結果顯示添加微量鎳及銅合金元素有助於提升抗蝕性,並且抑制陽極溶解速率,表面分析結果顯示合金元素富集於腐蝕產物層之中,有助於腐蝕產物生成致密及貼合性以提升抗蝕性;而第二部份實驗結果顯示,鎳銅高強度低合金鋼在回火溫度660oC時抗蝕性最好,回火溫度提高至780oC則抗蝕性降低。 | zh_TW |
dc.description.abstract | High strength low alloy steels have been widely used in the marine engineering and defense industry due to their superior yield strength, toughness and weldability. Although these materials have superior mechanical properties, the corrosion resistance is the other important issue especially when they are used in the marine environment. In this study, we investigated the effect of nickel and copper addition on the corrosion resistance of high strength low alloy steels in the marine environment, and the effect of heat treatments on the corrosion resistance of the new designed NiCu steel. The potentiodynamic polarization curve was conducted using a Gamry Reference 600 potentiostat to evaluate the corrosion performance of two high strength low alloy steels. The surface morphology and composition of corrosion products formed on the material surface after corrosion treatment were analyzed using scanning electron microscopy (SEM), electron probe micro-analyzer (EPMA), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The preliminary electrochemical measurement and surface analysis results showed that higher amount of Ni and Cu addition can improve the corrosion resistance of high strength low alloy steels. In the EPMA analysis, it was found the corrosion layer of higher Cu and Ni containing alloy was enriched with copper. The new designed NiCu steel have the best corrosion resistance at tempering temperature of 660 oC. | en |
dc.description.provenance | Made available in DSpace on 2021-06-08T03:58:08Z (GMT). No. of bitstreams: 1 ntu-107-R05525068-1.pdf: 13463383 bytes, checksum: 37f886263d0b19b514b6ccd2b1526640 (MD5) Previous issue date: 2018 | en |
dc.description.tableofcontents | 口試委員審定書 i
致謝 ii 摘要 iii Abstract iv 目錄 v 圖目錄 viii 表目錄 xi 第一章 前言 1 第二章 文獻回顧 2 2-1 腐蝕的介紹與基本理論 2 2-1-1 腐蝕介紹 2 2-1-2 腐蝕熱力學 2 2-1-3 腐蝕動力學 5 2-1-4 腐蝕的分類 7 2-2 高強度低合金鋼介紹 13 2-2-1 高強度低合金鋼發展 13 2-2-2 高強度低合金鋼應用及問題 15 2-2-3 高強度低合金之抗蝕性提升 17 2-2-4 合金元素與抗蝕能力 28 2-3 鋼鐵熱處理與抗蝕能力 31 2-3-1 鋼熱處理介紹與應用 31 2-3-2 熱處理與抗蝕能力 33 第三章 實驗方法及步驟 38 3-1 實驗方法 38 3-2 實驗步驟 38 3-2-1 試片來源及製備 40 3-2-2 抗蝕性測試及浸泡測試 40 3-2-3 腐蝕形貌及產物形貌分析 42 3-2-4 腐蝕產物組成分析 42 3-2-5 熱處理步驟及金相組織觀察 43 3-2-6 熱處理與抗蝕性分析 44 3-2-7 熱處理與腐蝕產物分析 45 第四章 實驗結果與討論 46 4-1 高強度低合金鋼基本性質分析 46 4-2 高強度低合金鋼電化學性質分析與表面形貌 46 4-2-1 溶氧量對高強度低合金鋼抗蝕性影響 46 4-2-2 溫度對於高強度低合金鋼抗蝕性影響 49 4-2-3 pH值對高強度低合金鋼抗蝕性影響 51 4-2-4 動電位極化曲線後表面形貌及橫截面形貌 53 4-3 高強度低合金鋼腐蝕行為分析 54 4-4 腐蝕產物分析 56 4-4-1 腐蝕產物表面及橫截面形貌 56 4-4-2 腐蝕產物元素點分析及線掃描 58 4-4-3腐蝕產物XRD分析 61 4-4-4 腐蝕產物合金元素mapping分析 63 4-4-5 腐蝕產物XPS分析 64 4-5 合金元素對於抗蝕性討論 67 4-6 熱處理對NiCu鋼抗蝕能力分析 69 4-6-1 熱處理及金相組織觀察 69 4-6-2 熱處理與電化學性質分析 70 4-6-3 熱處理與表面形貌分析 72 4-6-4 熱處理與腐蝕產物分析 73 4-7 熱處理製程對於抗蝕性討論 76 第五章 結論 78 第六章 未來展望 80 參考文獻 81 | |
dc.language.iso | zh-TW | |
dc.title | 合金元素及熱處理製程對高強度低合金鋼腐蝕行為之研究 | zh_TW |
dc.title | Effect of alloy elements and heat treatment on the corrosion resistance of high strength low alloy steels | en |
dc.type | Thesis | |
dc.date.schoolyear | 106-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 鄭憶中,宋家驥,顏鴻威,李偉任 | |
dc.subject.keyword | 高強度低合金鋼,鎳銅合金,熱處理,極化曲線,抗蝕性, | zh_TW |
dc.subject.keyword | igh strength low alloy,Nickel copper alloy,Heat treatment,Polarization curve,Corrosion resistance, | en |
dc.relation.page | 86 | |
dc.identifier.doi | 10.6342/NTU201802876 | |
dc.rights.note | 未授權 | |
dc.date.accepted | 2018-08-13 | |
dc.contributor.author-college | 工學院 | zh_TW |
dc.contributor.author-dept | 工程科學及海洋工程學研究所 | zh_TW |
顯示於系所單位: | 工程科學及海洋工程學系 |
文件中的檔案:
檔案 | 大小 | 格式 | |
---|---|---|---|
ntu-107-1.pdf 目前未授權公開取用 | 13.15 MB | Adobe PDF |
系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。