系統識別號 U0026-0812200914001886
論文名稱(中文) 微生物及鹽度對不鏽鋼材料之腐蝕影響:以台南市四草野生動物保護區為例
論文名稱(英文) The Effects of Microbes and Salinity on the Corrosion of Stainless Steel: The Hsih-Tsao Wildlife Conservation Area of Tainan City as an Example Site
校院名稱 成功大學
系所名稱(中) 地球科學系碩博士班
系所名稱(英) Department of Earth Sciences
學年度 95
學期 2
出版年 96
研究生(中文) 楊舜傑
研究生(英文) Shun-chieh Yang
電子信箱 l4692116@mail.ncku.edu.tw
學號 l4692116
學位類別 碩士
語文別 中文
論文頁數 109頁
口試委員 口試委員-曾怡禎
中文關鍵字 腐蝕  微生物  鹽度  不鏽鋼 
英文關鍵字 corrosion  microbe  salinity  stainless steel 
中文摘要 本研究實驗地點為台南四草野生動物保護區的魚塭水池(A、B、C、D池)及出入水口(I),實驗分為現地及實驗室兩部分。在現地放置304材質之不鏽鋼鍋進行一年的觀察,發現304材質的不鏽鋼腐蝕情形,有著季節性的變化。在春夏時,腐蝕的現象明顯並且有不同的腐蝕現象,腐蝕現象至少為三類(紅棕色物質的生成、黑色物質的生成、蝕刻現象的出現);在秋冬時,腐蝕的現象不明顯或沒有腐蝕情形。在實驗室利用304材質之不鏽鋼棒進行腐蝕實驗,由野外實驗結果得知腐蝕的現象和鹽度有某種相關性,因此分別在五種不同鹽度(S1:7.4‰;S2:13.5‰;S3:17.2‰;S4:23.5‰;S5:36.6‰)下以硫酸還原培養基培養細菌,再各別放入不鏽鋼棒。在鹽度低時,腐蝕現象就顯著(重量減輕)或不同;在鹽度高時,腐蝕現象就不明顯或沒有腐蝕情形(重量增加)。實驗室結果顯示鹽度或許是一種不鏽鋼之腐蝕因素,而微生物又是另一種造成腐蝕的因素,另外,鹽度在較低範圍時,鹽度及微生物所造成的腐蝕最為嚴重,研究成果可以做為日後不鏽鋼防腐的參考依據。
英文摘要 The experimental sites of this study were in the aquacultural ponds (ponds A, B, C, and D) and the water inlet (I) of the Hsih-Tsao Wildlife Conservation Area, Tainan City. The on-site and laboratory experiments were carried out in this study. In the field, the 304-type stainless steel pans were placed one year in ponds A, B, C, and D and at the water inlet (I) for their corrosion observations. The results revealed that there existed a seasonal change in the corrosion of 304-type stainless steel. In spring and summer, the corrosion of the stainless steel was remarkable, revealing three different kinds of corrosion patterns (formation of red-brown matter, formation of black matter, and appearance of etching). In the laboratory, the experimental results of corrosion tests on the 304-type stainless steel coupon demonstrated that the corrosion was somewhat correlated with salinity. Thus, the bacteria isolated from the adhesives on the corroded stainless pans in ponds A, B, C, D and the water inlet were cultivated in the sulfate-reducing medium with five different salinities (S1: 7.4‰, S2: 13.5‰, S3: 17.2‰, S4: 23.5‰, S5: 36.6‰), in which the 304-type stainless steel coupon was put in separately. The results showed that the corrosion was marked (loss of weight) while the coupon was in the low salinity medium, whereas the corrosion was not significant while that was in the high salinity medium. This suggests that salinity and microbes can be causative factors of corrosion. In the low salinity medium, salinity and microbes could cause the most severe corrosion of stainless steel, suggesting being a good reference for the anti-corrosion of stainless steel.
論文目次 摘要 i
Abstract ii
誌謝 iii
目錄 iv
表目錄 vii
圖目錄 ix
1. 前言 1-1
1.1 研究區域描述 1-5
1.1.1 區域概況 1-5
1.1.2 水文地質概況 1-5
1.1.3 研究範圍 1-6
1.2 不鏽鋼的起源及特性 1-8
1.3 文獻回顧 1-9
2. 研究方法 2-1
2.1 現地調查 2-1
2.2 不鏽鋼放置點 2-2
2.3 實驗室分析 2-4
2.3.1 培養基的配方 2-4
2.3.2 菌種培養 2-6
2.3.3 不鏽鋼放置於現地的池水 2-10
2.3.4 不鏽鋼及微生物放置於不同鹽度的培養基 2-10
2.3.5 鹽度的影響 2-11
2.3.6 不鏽鋼腐蝕現象 2-11
3. 實驗結果 3-12
3.1 池水基本理化參數量測 3-12
3.2 雨量和鹽度相互關係 3-18
3.3 不鏽鋼腐蝕情形 3-22
3.3.1 不鏽鋼重量的改變情形 3-37
3.3.2 不鏽鋼成份的改變情形 3-48
3.4 現地所培養出來的微生物 3-52
4. 討論 4-1
4.1 鹽度的討論 4-1
4.2 腐蝕現象的討論 4-3
4.3 菌種的討論 4-3
5. 結論 5-1
6. 參考文獻 6-1
7. 附錄 7-1
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