鍍鋅鋼板之腐蝕與電化學行為

以作者查詢圖書館館藏

、以作者查詢臺灣博碩士

、以作者查詢全國書目

、勘誤回報

、線上人數：40

、訪客IP：3.14.132.214

姓名

呂振嘉(Chen-chia Lu) 查詢紙本館藏

畢業系所

機械工程學系

論文名稱

鍍鋅鋼板之腐蝕與電化學行為
(Corrosion and electrochemical behavior of coating zinc sheet steel)

相關論文

★ 使用實驗計劃法求得印刷電路板微鑽針最佳鑽孔參數	★ 滾針軸承保持架用材料之電鍍氫脆研究
★ 強制氧化及熱機處理對鎂合金AZ91D固相回收製程之研究	★ 滾針軸承保持架圓角修正之有限元素分析
★ 透過乾式蝕刻製作新型鍺全包覆式閘極電晶體元件	★ 窗型球柵陣列構裝翹曲及熱應力分析
★ 冷軋延對ZK60擠製材的拉伸與疲勞性質之影響	★ 熱引伸輔助超塑成形製作機翼整流罩之設計及分析
★ 超塑性鋁合金5083用於機翼前緣整流罩之研究	★ 輕合金輪圈疲勞測試與分析
★ 滾針軸承保持架之有限元分析	★ 鎂合金之晶粒細化與超塑性研究
★ 平板式固態氧化物燃料電池穩態熱應力分析	★ 固態氧化物燃料電池連接板電漿鍍膜特性研究
★ 7XXX系鋁合金添加Sc之顯微組織與機械性質研究	★ 高延性鎂合金之特性及成形性研究

檔案

[Endnote RIS 格式]

[Bibtex 格式]

[相關文章]

[文章引用]

[完整記錄]

[館藏目錄]

[檢視]

[下載]

本電子論文使用權限為同意立即開放。
已達開放權限電子全文僅授權使用者為學術研究之目的，進行個人非營利性質之檢索、閱讀、列印。
請遵守中華民國著作權法之相關規定，切勿任意重製、散佈、改作、轉貼、播送，以免觸法。

摘要(中)

本研究探討熱浸鍍鋅鋼板(SGCC)、電鍍鋅鋼板(SECC)、55%鋁鋅鋼板(SGLC)在不同pH值之3% NaCl溶液中的電化學行為，利用浸泡腐蝕和開路電位量測、Tafel極化和循環極化來評估鍍鋅鋼板的腐蝕與電化學現象。
比較開路電位與重量損失，SGLC在大氣中表面會生成氧化鋁層且具有保護作用，使得在重量損失量較少且開路電位量測偏向貴重，但在pH=11溶液下，此氧化層容易被破壞而導致腐蝕訊速提升。SGCC與SECC在酸性下表面生成之氧化層為不穩定狀態，容易分解，使得重量損失量隨著pH值降低而增加、開路電位隨著pH值降低而區傾向活性，但在鹼性下時表面會會逐漸生成具有保護的氫氧化鋅層而保護鍍層。
從Tafel極化結果中，在不同pH值之3% NaCl溶液中，除了在pH=11以外，其抗腐蝕能力由大而小依序為: SECC＞SGLC＞SGCC；然而在pH=11時，SGLC腐蝕速率忽然提高，所以在此環境下其抗腐蝕能力由大而小依序為:SECC＞SGCC＞SGLC。
在循環極化曲線中，SGLC只有在pH=11下才有鈍態特徵的出現且以負磁滯曲線呈現，而SGCC皆有明顯的鈍態特徵但保護能能力不佳，使的鈍態區無法完整呈現並造成局部腐蝕，SECC有完整的鈍態膜，但容易受到不同的pH值的影響而造成的孔蝕產生且嚴重的破壞到基材上。

摘要(英)

Hot-dip zinc、electroplating zinc and 55%Al-Zn coating were investigated for comparison of their corrosion resistance, electrochemical behavior in 3% NaCl of varying with pH value solution. The assessment corrosion and electrochemical phenomenon of coating zinc sheet steel were employed with immersed corrosion, opening circuit potential, Tafel polarization, cyclic polarization.
Compared with the OCP and weight loss, SGLC surface is covered by aluminum oxide layer which protects the function. The result is that its weight lost less and OCP towards to the noble potential. But in pH=11, this oxide layer is easier destroyed to cause the corrosion rate rise. However, the surface of SGCC and SECC is formed the oxide layer with unstable in acidic environment, and it is easy to decompose, to cause weight loss increase with the pH decreases and the OCP decrease with the pH decreases. But in the alkalinity environment is covered by the oxide layer which transformed from the degrees of Zinc hydroxide to protect coating.
From Tafel polarization, 3% NaCl of varying with pH value solution except pH=11, its corrosion resistant ability decreases for SECC＞SGLC＞SGCC. In pH=11, SGLC corrosion rate are enhanced in the short time. Therefore, the corrosion resistance which is under this environment decreases in order to SECC＞SGCC＞SGLC.
In cyclic polarization, SGLC only has the passive state characteristic appearance also presents by the negative hysteresis curve in pH=11. SGCC has obviously passive state characteristic, but its protected ability is not good enough. The result of the passive state area is unable to do the completely display, and to create the localized corrosion. SECC has entirely passive membrane, but it is easy to different pH value accessibly. Above of all will cause pitting formation which will also make the serious destruction to the substrate on.

關鍵字(中)

★ 鍍鋅鋼板
★ 電化學行為
★ Tafel極化
★ 循環極化

關鍵字(英)

★ coating zinc sheet steel
★ electrochemical behavior
★ cyclic polarization
★ Tafel polarization

論文目次

中文摘要 I
英文摘要 II
誌謝 IV
目錄 V
表目錄 IX
圖目錄 XI
第一章緒論 1
1-1前言 1
1-2研究背景與動機 1
第二章文獻回顧及原理 3
2-1鍍層鋼板的發展與簡介 3
2-1-1熱浸鍍鋅鋼板 4
2-1-2電鍍鋅鋼板 6
2-1-3 55%鋁鋅鋼板 6
2-2熱浸鍍鋅腐蝕條件 7
2-2-1熱浸鍍鋅鋼板腐蝕機制 8
2-2-2熱浸鍍鋅鋼板應力腐蝕機制 9
2-3 55%鋁鋅鋼板鍍層結構 10
2-4 55%鋁鋅鋼板腐蝕機制 11
2-4-1 E. Palma腐蝕機制 11
2-4-2 I.O. Wallinder腐蝕機制 12
2-5腐蝕與電化學 13
2-5-1腐蝕的定義 13
2-5-2電化學腐蝕 13
2-5-3 Nernst Equation與Potential-pH Diagram 15
2-5-4參考電極(Reference Electrode) 17
2-5-5混合電位(Mixed Potential)理論 17
2-6電化學測試法 19
2-6-1開路電位(Open Circuit Potential) 19
2-6-2 Tafel 極化 20
2-6-3循環極化(Cyclic Polarization) 20
第三章實驗方法與步驟 22
3-1實驗材料 22
3-2實驗設備 22
3-3測試環境 22
3-4浸泡腐蝕試驗 23
3-5電化學試驗 23
3-6電化學實驗方法 24
3-6-1開路電位(Open Circuit Potential) 24
3-6-2塔佛極化曲線(Tafel Polarization Curves) 24
3-6-3循環極化曲線(Cyclic Polarization Curves) 24
3-7電子顯微鏡(SEM)分析 25
3-8斷面觀察 25
第四章結果與討論 26
4-1中性3% NaCl水溶液環境下之腐蝕試驗 26
4-1-1浸泡腐蝕試驗與開路電位量測 26
4-1-2 Tafel極化 27
4-1-3循環極化 28
4-1-4中性環境下腐蝕表面型態分析 30
4-2酸性3% NaCl水溶液環境下之腐蝕試驗 31
4-2-1浸泡腐蝕試驗與開路電位量測 31
4-2-2 Tafel極化 32
4-2-3循環極化 33
4-2-4酸性環境下腐蝕表面型態分析 35
4-3鹼性3% NaCl水溶液環境下之腐蝕試驗 36
4-3-1浸泡腐蝕試驗與開路電位量測 36
4-3-2 Tafel極化 38
4-3-3循環極化 38
4-3-4鹼性環境下腐蝕表面型態分析 41
第五章結論 42
參考文獻 44

參考文獻

1.X.G. Zhang, “Corrosion and Electrochemisry of Zinc”,
Plenum Press, New York, 1996.
2.“Corrosion”, ASM Handbook, Vol.13, 9th. ASM
International, 1992.
3.P.R. Sere, M. Zapponi , C.I. Elsner , A.R. Di Sarli ,
“Comparative Corrosion Behaviour Of 55 Aluminium-Zinc
Alloy And Zinc Hot-Dip Coating Deposited On Low Carbon
Steel Substrates” , Corrosion Science, Vol.40, No.10,
pp.1711-1723 , 1998.
4.Hot-dip galvanizing: process and product, Brazilian
Institute of Lead And Zinc Information－ICZ, Report no.
10 ICZ-Z 4. 10/4. 11, Sao Paulo, Brazil,October 1972.
5.鍍鋅鋼品使用技術手冊, 燁輝企業股份有限公司技術部, 2001年
6.鍍鋅鋼品使用技術手冊, 燁輝企業股份有限公司, No.4, 1991,
pp.1-3, pp.8-11, pp.31-35
7.Kubaschewski O. Iron-binary phase diagrams, 1st ed. New
York: Springer -Verlag, 1982.
8.Lin CS, Meshi M. Metall Mater Trans B 1994; 25B: 721.
9.S. Feliu Jr., V. Barranco,“XPS study of the surface
chemistry of conventional hot-dip galvanized pure Zn,
galvanneal and Zn-Al alloy coatings on steel”, Acta
Materialia, Vol.51, pp.5413-5424, 2003.
10.P.H. Rieger, Electrochemistry, Prentice-Hall
International, New York, 1987.
11.林育立,“鍍鋅鋼板顯微結構及機械性質之研究”, 國科會專題
研究計畫研究成果報告 , 中華工學院, 1995年
12.J.D. Culcasi, P.R. Sere, C.I. Elsner, A.R. Di Sarli,
“Control of the growth of zinc-iron phase in the hot-
dip galvanizing process”, Surface and Coatings
Technology, Vol. 122 , pp.21-23 , 1999.
13.S.M.A. Shibli, R. Manu, “Improvement of hot-dip
coating by enriching the inner layers with iron
oxide”, Applied Surface Science, Vol.252, pp.3058-
3064, 2006.
14.楊聰仁,“電鍍鋅與熱浸鍍鋅比較”,防蝕工程第二卷, 第四期,
pp.53-61, 1989年
15.魏豐義, “熱浸鍍鋅防蝕原理與壽命”, 防蝕工程第九卷, 第一
期, pp.53-72, 1995年
16.J. Foct, J. Aryani-Boufette , A. Iost et al.,
Proceedings of the Galvatech 92 Conference, Amsterdam
CRM ed 1992.
17.G. Reumont, J.B. Vogt, A. Iost, J. Foct, “The effects
of an Fe-Zn Intermetallic-containing coating on the
stress corrosion cracking behavior of a hot-dip
galvanized steel”, Surface and Coatings Technology,
Vol. 139 , pp.265-271 , 2001.
18.B.M. Perfetti, “A comparion of pretreatments for
prepainted galvanized sheet”, Met. Finishing Vol. 81,
Issue5, pp.57-60, 1983.
19.“Surface Cleaning, Finishing, and coating”, Metals
Handbook, Vol. 5, 9th. American Society for metals,
1983.
20.張世穎,陳富謀,莊東漢,“不同鋅含量鋁鋅合金腐蝕行為研
究”, 防蝕工程第十八卷, 第二期, pp.169-176, 2004年
21.E. Palma, J.M. Puente, M. Morcillo, “The Atmospheric
Corrosion Mechanism Of 55%Al-Zn Coating On Steel”,
Corrosion Science, Vol. 40 , No.1, pp.61-68 , 1998.
22.A. Ramus Moreira, Z. Panossian, P.L. Camargo, M.
Ferreira Moreira, I.C. da Silva, J.E. Ribeiro de
Carvalho, “Zn/55Al coating microstructure and
corrosion mechanism”, Corrosion Science, Vol.48,
pp.564-576, 2006.
23.I. Odnevall Wallinder, W. He, P-E. Augustsson, C.
Leygraf, “Characterization of black rust staining of
unpassivated 55% Al-Zn alloy coatings. Effect of
temperature, pH and wet storage”, Corrosion Science,
Vol. 41 , pp.2229-2249 , 1999.
24.R.S. Alwitt, J.W. Diggle, A.K. Vijh(Eds.), “Oxides and
Oxide Films”, Vol.4, 1976.
25.鮮祺振,腐蝕理論與實驗,徐氏基金會出版社,1990年
26.Denny A. Jones, “Principles and prevention of
corrosion”, Second Edition , Simon & Schuster / A
Viacom Company, 1996.
27.葉明勳, “防蝕工程”, 中華大學機械系暨航空太空工程研究所
上課講義, 2005年
28.柯賢文, 腐蝕及其防制, 全華科技圖書公司, 1998
29.W.S. Tait, “An introduction to electrochemical
corrosion testing for practicing engineers and
scientists”, Chapter 6, Racine, Wisconsin, 1994.

指導教授

李雄(Shyong Lee)

審核日期

2008-7-4

推文