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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 林招松(Chao-Sung Lin) | |
dc.contributor.author | Jun-Kai Chang | en |
dc.contributor.author | 張竣凱 | zh_TW |
dc.date.accessioned | 2021-06-15T11:51:07Z | - |
dc.date.available | 2019-10-14 | |
dc.date.copyright | 2016-10-14 | |
dc.date.issued | 2016 | |
dc.date.submitted | 2016-08-11 | |
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Wang, 'Growth of intermetallic layer in the aluminide mild steel during hot-dipping,' Surface and Coatings Technology, vol. 204, pp. 824-828, 2009. [75] C. Yao, H. Lv, T. Zhu, W. Zheng, X. Yuan, and W. Gao, 'Effect of Mg content on microstructure and corrosion behavior of hot dipped Zn–Al–Mg coatings,' Journal of Alloys and Compounds, vol. 670, pp. 239-248, 2016. | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/49829 | - |
dc.description.abstract | 先進高強度鋼與熱衝壓製程相輔相成應用,是目前車廠為落實車體減輕策略的方法。為保護鋼底材脫碳與氧化,且讓鋼材有一定障蔽保護與犧牲保護之效果,鋅基合金鍍層是當代對於熱衝壓製程開發必要發展。
三元鋅基合金鍍層之開發與運用評估更是鮮少的研究主題。本研究使用商用鋅鋁鎂三元合金鍍層,鍍層成分為6Al-3Mg-Zn與11Al-3Mg-Zn,進行鋅-鋁-鎂三元合金鍍層之鍍層微結構,以及沃斯田體化之後鍍層演變,進而影響其後續電化學行為的抗蝕能力,進行一系列評估,了解三元鍍層對於熱衝壓製程之可靠性。 實驗結果發現,熱浸鍍鋅-鋁-鎂三元合金鍍層系統中,在11Al-3Mg-Zn合金鍍層中,在沃斯田體化後會有有別於過往的鍍層結構。在底材與鍍層介面產生一連續的鐵鋁相,該鐵鋁相除了有效的避免液態鋅屬脆化的問題之外,也可以抑制鋼底材鐵原子的擴散,使鍍層內的鋅含量提高,可以有效的提升整體鍍層之障蔽保護與犧牲保護的效果。 | zh_TW |
dc.description.abstract | Advanced high strength steel and hot stamping process are used complementarily for the demand of vehicle facilities to reduce the vehicle weight. To protect the steel substrate from decarbonizing and oxidizing and ensure that the steel substrate has enough effect of barrier and sacrificial anode protection, it is necessary to develop Zn-based coatings on steels for the hot stamping process.
The development and application estimation of ternary Zn-based coatings are rarely research topic. In this study, different compositions of 6Al-3Mg-Zn and 11Al-3Mg-Zn, microstructure and phase evaluation after austenitizing of Zn-Al-Mg ternary coatings on steel and electrochemical behavior which affects the corrosion resistance are studied. It was estimated to understand the reliability for the hot stamping process. The result shows that there are different microstructures of Zn-Al-Mg coatings after austenitizing when the Al/Mg ratio is high in the ternary coating system. Continuous Fe-Al phase layers form between the coatings and the steel substrate. This Fe-Al phase not only avoids liquid metal enbrittlement but also restrains the Fe atoms from diffusing to the coatings so that the Zn content increases and enhance the barrier and sacrificial anode protection effectively. | en |
dc.description.provenance | Made available in DSpace on 2021-06-15T11:51:07Z (GMT). No. of bitstreams: 1 ntu-105-R03527005-1.pdf: 5128023 bytes, checksum: dae47f9d88878ba675a519fa15d7f576 (MD5) Previous issue date: 2016 | en |
dc.description.tableofcontents | 口試委員會審定書 i
摘要 ii Abstract iii 總目錄 iv 圖目錄 viii 表目錄 xiii 第一章 前言 1 第二章 文獻回顧 3 2.1車體材料選擇 3 2.2熱衝壓 6 2.2.1直接式熱衝壓 6 2.2.2間接式熱衝壓 7 2.3 表面處理方式 8 2.3.1熱浸鍍鋁/鋁矽 9 2.3.1.1熱浸鍍鋁 9 2.3.1.2熱浸鍍鋁矽 11 2.3.2熱浸鍍鋅 13 2.3.2.1熱浸鍍鋅之鐵鋅介金屬相 16 2.3.2.2 鐵鋁障壁層之生長 20 2.3.3.熱浸鍍鋅鋁 23 2.3.4 熱浸鍍鋅鋁鎂 25 2.4 常見熱衝壓製程之鍍層 28 2.4.1 熱浸鍍鋁/鋁矽 30 2.4.2 電鍍鋅鎳合金鍍層 32 2.4.3 熱浸鍍鋅與熱浸鍍鐵鋅鍍層 34 2.4.3.1 高溫氧化 35 2.4.3.2液態金屬脆化 36 2.4.4 熱浸鍍鋅鋁 41 2.4.5 熱浸鍍鋅鋁鎂 43 2.5 研究目的 44 第三章 實驗方法與步驟 45 3.1 熱浸鍍鋅鋁鎂 45 3.2 橫截面試樣製備 45 3.3 掃瞄式電子顯微鏡 46 3.4電子探測微分析儀 46 3.5 穿透式電子顯微鏡 47 3.6 X光繞射分析 48 3.7 X射線光電子能譜儀 49 3.8 熱衝壓沃斯田體化熱處理模擬 49 3.8 高溫拉伸 50 3.9 電化學分析 51 3.9.1電化學剝除法 52 第四章 結果與討論 53 4.1 鍍層顯微組織 53 4.1.1 原始鍍層組織 53 4.1.1.1熱浸鍍鋅鍍層 53 4.1.1.2高鋁含量(5 wt.%Al)熱浸鍍鋅鍍層 54 4.1.1.3 三元熱浸鍍鋅鋁鎂鍍層 56 4.1.2小結 61 4.2 沃斯田鐵化熱處理 62 4.2.1鍍層微結構分析 62 4.2.1.1 熱浸鍍鋅鍍層微結構分析 62 4.2.1.2高鋁含量(5 wt.%Al)熱浸鍍鋅鍍層 64 4.2.1.3 熱浸鍍鋅鋁鎂三元合金鍍層 70 4.2.2 表面氧化物分析 79 4.3 鍍層抗蝕能力 88 4.4 高溫拉伸 91 4.4.1 液態金屬脆化-介面鐵鋁相 94 第五章 結論 96 參考文獻 97 | |
dc.language.iso | zh-TW | |
dc.title | 熱浸鍍鋅-鋁-鎂三元合金鍍層鋼板之微結構、高溫氧化與電化學行為 | zh_TW |
dc.title | Microstructure, High Temperature Oxidation and Electrochemical Behavior of Hot-Dip Zn-Al-Mg Ternary Coated Steel Sheets | en |
dc.type | Thesis | |
dc.date.schoolyear | 104-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 王朝正(Chaur-Jeng Wang),葛明德(Ming-Der Ger),林景崎(Jing-Chie Lin),鄭維仁(Wei-Jen Cheng) | |
dc.subject.keyword | 熱衝壓,熱浸鍍鋅,三元合金鍍層,鋅-鋁-鎂,鐵鋁相, | zh_TW |
dc.subject.keyword | hot stamping,hot-dip galvanized,ternary coatings,Zn-Al-Mg,Fe-Al phase, | en |
dc.relation.page | 111 | |
dc.identifier.doi | 10.6342/NTU201602292 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2016-08-11 | |
dc.contributor.author-college | 工學院 | zh_TW |
dc.contributor.author-dept | 材料科學與工程學研究所 | zh_TW |
顯示於系所單位: | 材料科學與工程學系 |
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