請用此 Handle URI 來引用此文件:
http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/22322
完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 林新智(Hsin-Chih Lin) | |
dc.contributor.author | Yi-Chun Lo | en |
dc.contributor.author | 羅毅駿 | zh_TW |
dc.date.accessioned | 2021-06-08T04:15:31Z | - |
dc.date.copyright | 2010-08-13 | |
dc.date.issued | 2010 | |
dc.date.submitted | 2010-08-06 | |
dc.identifier.citation | 參考文獻
1. 楊智超,鎂合金材料特性及新製程發展,工業材料,152(1999)72。 2. 陳信吉、陳復國,AZ系鎂合金沖鍛成形之研究,工業材料,198(2003)126。 3. 王建義,超輕量鎂合金開發,工業材料,184(2002)132。 4. Pattison, J., et al.,¨Cold gas dynamic manufacturing: A non-thermal approach to freeform fabrication ¨International Journal of Machine Tools and Manufacture Vol. 47, 2007, pp. 627-634. 5. D.S. Tawil, Corrosion and surface protection developments, magnesium technology in Proceedings of the Conference, (1986)66. 6. W. Smith, “Structure and Properties of Engineering Alloys,” 2nd ed., McGRAW-HILL Inc. press, 1993 7. 邱六和、林信安,鎂合金腐蝕與表面處理,工業材料,186(2002)118-119. 8. 戴光勇,鎂合金表面處理技術(上),材料與社會,24(1988)57。 9. 鮮祺振,腐蝕控制,(1998)15。 10. 鮮祺振,腐蝕理論與實驗,徐氏基金會出版社,民國七十九年。 11. Denny A. Jones, “Principles and prevention of corrosion”, Second Edition, Simon 12. 莊東漢,材料破損分析,五南圖書出版公司,民國九十七年。 13. 柯賢文, 腐蝕及其防制, 全華科技圖書公司, 民國八十七年。 14. W.S. Tait, “An introduction to electrochemical corrosion testing for practicing engineers and scientists”, Chapter 6, Racine,Wisconsin, 1994. 15. Alkhimov, A.P., V.F. Kosarev, and A.N. Papyrin,¨A method of cold gas dynamic deposition¨. Doki. Akad. Nauk SSSR.Vol. 315, 1990, pp. 1062-1065. 16. Klinkov, S.V., V.F. Kosarev, and M. Rein,¨Cold spray deposition: Significance of particle impact phenomena¨. Aerospace Science and Technology.Vol. 9, 2005, pp. 582-591. 17. Steenkiste, T.H.V., J.R. Smith, and R.E. Teets, ¨Aluminum coatings via kinetic spray with relatively large powder particles¨. Surface and Coatings Technology Vol. 154, 2002, pp. 237-252. 18. Livingstone, I.H.G., K. Verolme, and C.J. Hayhurst, ¨Predicting the fragmentation onset velocity for different metallic projectiles using numerical simulations¨. International Journal of Impact Engineering Vol. 26, 2001, Pp. 453-464. 19. Stradling, G.L., et al.,¨Ultra-high velocity impacts: cratering studies of microscopic impacts from 3 km/s to 30 km/s¨. International Journal of Impact Engineering.Vol. 14, 1993, pp. 7 19-727. 20.Gilmore, D., et al. ¨Particle velocity and deposition efficiency in the cold spray process¨. Journal of Thermal Spray Technology.Vol. 8, 1999, pp. 576-582. 21. Papyrin, A.,¨Cold spray technology¨, ed. V. Kosarev, et al., 2007. 22. Schmidt, T., et al.,¨Development of a generalized parameter window for cold spray deposition¨. Acta Materialia.Vol. 54, 2006, pp. 729-742. 23. Jodoin, B., F. Raletz, and M. Vardelle,¨Cold spray modeling and validation using an optical diagnostic method¨. Surface and Coatings Technology.Vol. 200, 2006, pp. 4424-4432. 24. Jen, T.-C., et al.,¨Numerical investigations on cold gas dynamic spray process with nano and microsize particles¨. International Journal of Heat and Mass Transfer Vol. 48, 2005, pp. 4384-4396. 25. Pattison, J., et al.,¨Cold gas dynamic manufacturing: A non-thermal approach to freeform fabrication ¨International Journal of Machine Tools and Manufacture Vol. 47, 2007, pp. 627-634. 26. Li, C.-J. and W.-Y. Li,¨Deposition characteristics of titanium coating in cold spraying¨. Surface and Coatings Tecbnology.Vol. 167, 2003, pp.278-283. 27. Bray, M., A. Cockburn, and W. O Neill,¨The Laser-assisted Cold Spray process and deposit characterisation¨. Surface and Coatings Technology.Vol. 203, 2009, pp. 285 1-2857. 28. Li, C.-J., et al.,¨A theoretical model for prediction of deposition efficiency in cold spraying¨. Thin Solid Films.Vol. 489, 2005, pp. 79-85. | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/22322 | - |
dc.description.abstract | 鎂合金的化學性質活潑,屬於易遭受腐蝕的金屬,因此防蝕處理成為鎂合金在應用的過程中所需探討的課題。本實驗探討冷噴塗對鎂合金性質之影響,包括顯微組織、機械性質及腐蝕性質。實驗探討被噴塗基材為AZ80鎂合金及LZ91鎂合金,噴塗使用的粉末為IN625及含10%氧化鋁的鋁粉。
實驗結果發現,IN625噴塗層內部靠近鎂合金介面的粉末呈現接近圓形,並有些許圓形粉末埋入鎂合金內部;硬度值隨著接近鎂合金介面而減少。冷噴塗IN625會使得AZ80鎂合金表面產生再結晶現象,造成鎂合金表面晶粒細化,晶粒大小約3μm;而由於高溫及再結晶現象,晶粒內差排數量減少,使得表面硬度值只有些微上升。冷噴塗鋁會使得AZ80鎂合金表面有明顯加工硬化的現象。而噴塗對擠製材LZ91而言,金相與硬度的改變不明顯。 而經熱處理後的鋁塗層試片,塗層會與AZ80交互擴散,形成連續相之介金屬化合物。LZ91於介面處形成一層α相鎂,而不與鋁塗層形成化合物。腐蝕性質方面,在各項腐蝕試驗中顯示,無論IN625或鋁的塗層其腐蝕電流均比母材來得小,代表其腐蝕速率較慢,有較母材為佳的抗腐蝕性。 | zh_TW |
dc.description.abstract | It is commonly recognized that magnesium possesses poor corrosion resistance because of its high oxidation potential and porous oxide structure. The corrosion resistance is the most important topic for magnesium alloys application
The thesis aims to investigate how cold spray influences the properties of magnesium alloy, including microstructure, mechanical and corrosion property. The sprayed substrate is AZ80 and LZ91 magnesium alloy. IN625 and aluminum powder is used to spraying on the surface. After the cold spray IN625 process, the pellets bury in substrate. The shape of pellet is closely circular. In the coating, the hardness decrease with close to the interface. AZ80 substrate occurred grain refinement after spray IN625 process. The grain size is about 3μm.For the aluminum coating, it was observed that after coating process, substrate surface is obviously harder than after coating IN625 process. After annealing, the AZ80 alloy interacts with Al coating to form Mg17Al12 and Mg2Al3 compound at the interface. As to the corrosion behavior, the result of the potential-dynamic polarization curve tests reveals that, whether in the IN625 or the Al coating, the corrosion resistance are better than magnesium substrate. There are no pitting corrosion observed in the cold spray coating. | en |
dc.description.provenance | Made available in DSpace on 2021-06-08T04:15:31Z (GMT). No. of bitstreams: 1 ntu-99-R97527021-1.pdf: 5242654 bytes, checksum: 9391a7be77f81c795282342b26e0955f (MD5) Previous issue date: 2010 | en |
dc.description.tableofcontents | 致謝............................................I
中文摘要.........................................II Abstract........................................III 目錄..........................................IV 圖目錄........................................VII 表目錄..........................................X 第一章 前言.......................................1 第二章 文獻回顧....................................3 2-1 鎂合金簡介..................................3 2-1-1 鎂與鎂合金..............................3 2-1-2 鎂合金的分類.............................4 2-2 腐蝕與電化學.................................5 2-2-1 腐蝕的定義..............................5 2-2-2 金屬的電化學腐蝕..........................5 2-2-3 腐蝕電化學量測............................6 2-2-4 Tafel外推法及混合電位理論......................8 2-2-5 開路電位(Open Circuit Potential) ..................10 2-2-6 循環極化法(Cyclic Polarization) ..................10 2-3 冷噴塗製程..................................12 2-3-1 冷噴塗之原理.............................14 2-3-2 冷噴塗製程參數與堆積效率.....................16 第三章 實驗方法及步驟...............................20 3-1實驗流程圖..................................20 3-2試片之準備..................................21 3-2-1 鎂合金.................................21 3-2-2 冷噴塗粉末..............................21 3-2-3 冷噴塗前表面處理..........................21 3-2-4 冷噴塗製程..............................21 3-2-5 冷噴塗試片熱處理程序........................22 3-3 微結構觀察分析................................23 3-3-1 金相觀察................................23 3-3-2 SEM顯微組織觀察與EPMA 分析............23 3-3-3 X-Ray 繞射分析...........................23 3-4 機械性質測試.................................24 3-4-1 維氏硬度試驗.............................24 3-4-2 磨耗試驗................................24 3-5 腐蝕性質測試.................................25 3-5-1 開路電位量測.............................25 3-5-2 動電位極化曲線測試.........................25 3-5-3 循環極化曲線測試..........................25 3-5-4 交流阻抗分析.............................26 3-5-5 鹽霧試驗................................26 第四章 結果與討論..................................29 4-1 冷噴塗試片巨觀觀察及X-Ray 繞射分析.................29 4-2 冷噴塗試片OM顯微組織觀察........................32 4-3 冷噴塗試片SEM顯微組織觀察......................37 4-4 噴塗鋁/10%氧化鋁試片熱處理後SEM顯微組織觀察與EPMA 分析..42 4-5 機械性質測試.................................47 4-5-1 維氏硬度試驗.............................47 4-5-2 磨耗試驗................................50 4-6 腐蝕性質測試.................................52 4-6-1 開路電位量測.............................52 4-6-2 動電位極化曲線測試.........................54 4-6-3 循環極化曲線測試..........................57 4-6-4 交流阻抗分析.............................57 4-6-5 鹽霧試驗................................65 第五章 結論......................................67 參考文獻........................................68 | |
dc.language.iso | zh-TW | |
dc.title | 鎂合金冷噴塗之研究 | zh_TW |
dc.title | A Study of Cold Spary on Mg Alloy | en |
dc.type | Thesis | |
dc.date.schoolyear | 98-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 薛人愷,吳憲政 | |
dc.subject.keyword | 鎂合金,冷噴塗,熱處理,顯微組織,抗蝕性, | zh_TW |
dc.subject.keyword | magnesium alloys,cold spray,heat treatment,microstructure,corrosion Resistance, | en |
dc.relation.page | 70 | |
dc.rights.note | 未授權 | |
dc.date.accepted | 2010-08-08 | |
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 |
文件中的檔案:
檔案 | 大小 | 格式 | |
---|---|---|---|
ntu-99-1.pdf 目前未授權公開取用 | 5.12 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。