316L不銹鋼楔形縫隙內溶液化學

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316L不銹鋼楔形縫隙內溶液化學

張琳, 曹備, 吳蔭順, 崔強, 陳卓, 方智

文章導航 > 工程科學學報 > 1996 > 18(S2): 37-41

張琳, 曹備, 吳蔭順, 崔強, 陳卓, 方智. 316L不銹鋼楔形縫隙內溶液化學[J]. 工程科學學報, 1996, 18(S2): 37-41. doi: 10.13374/j.issn1001-053x.1996.s2.008

引用本文:

張琳, 曹備, 吳蔭順, 崔強, 陳卓, 方智. 316L不銹鋼楔形縫隙內溶液化學[J]. 工程科學學報, 1996, 18(S2): 37-41. doi: 10.13374/j.issn1001-053x.1996.s2.008

Zhang Lin, Cao Bei, Wu Yinshun, Cui Qiang, Chen Zhuo, Fang Zhi. Solution Chemistry in Cuneiform Crevice of 316L Stainless Seel[J]. Chinese Journal of Engineering, 1996, 18(S2): 37-41. doi: 10.13374/j.issn1001-053x.1996.s2.008

Citation:

Zhang Lin, Cao Bei, Wu Yinshun, Cui Qiang, Chen Zhuo, Fang Zhi. Solution Chemistry in Cuneiform Crevice of 316L Stainless Seel[J]. Chinese Journal of Engineering, 1996, 18(S2): 37-41. doi: 10.13374/j.issn1001-053x.1996.s2.008

張琳, 曹備, 吳蔭順, 崔強, 陳卓, 方智. 316L不銹鋼楔形縫隙內溶液化學[J]. 工程科學學報, 1996, 18(S2): 37-41. doi: 10.13374/j.issn1001-053x.1996.s2.008

引用本文:

張琳, 曹備, 吳蔭順, 崔強, 陳卓, 方智. 316L不銹鋼楔形縫隙內溶液化學[J]. 工程科學學報, 1996, 18(S2): 37-41. doi: 10.13374/j.issn1001-053x.1996.s2.008

Zhang Lin, Cao Bei, Wu Yinshun, Cui Qiang, Chen Zhuo, Fang Zhi. Solution Chemistry in Cuneiform Crevice of 316L Stainless Seel[J]. Chinese Journal of Engineering, 1996, 18(S2): 37-41. doi: 10.13374/j.issn1001-053x.1996.s2.008

Citation:

Zhang Lin, Cao Bei, Wu Yinshun, Cui Qiang, Chen Zhuo, Fang Zhi. Solution Chemistry in Cuneiform Crevice of 316L Stainless Seel[J]. Chinese Journal of Engineering, 1996, 18(S2): 37-41. doi: 10.13374/j.issn1001-053x.1996.s2.008

316L不銹鋼楔形縫隙內溶液化學

doi: 10.13374/j.issn1001-053x.1996.s2.008

北京科技大學表面科學與腐蝕工程系, 北京 100083

基金項目:

冶金部腐蝕—磨蝕與表面技術開放研究實驗室資助

作者簡介:
張琳女 37歲工程師

中圖分類號: TG172.5
計量
- 文章訪問數: 244
- HTML全文瀏覽量: 78
- PDF下載量: 6
- 被引次數: 0
出版歷程
- 收稿日期: 1996-01-22
- 網絡出版日期: 2021-11-13

Solution Chemistry in Cuneiform Crevice of 316L Stainless Seel

Department of Surface Science and Corrosion Engineering, USTB, Beijing 100083

摘要: 用微電極研究了316L不銹鋼楔形縫隙在3.5%NaCl溶液(室溫)中的溶液化學變化規律。結果表明:在兩種不同縫隙開口情況下,縫隙內各點的Cl^-都發生了富集,pH也都降低;當縫隙開口為1.36mm時,縫隙內Cl^-濃度隨時間和與縫口距離的增大而增大,pH值隨之下降,最高Cl^-濃度為1.6mol/l,最低pH值為5.01;當縫隙開口為0.22mm,最高Cl^-濃度為1.1mol/l,最低pH值為3.1.縫隙內溶液酸化是由于金屬離子的水解和Cl^-的共同作用,縫內金屬氯化物濃度甚至可以達到飽和態。
- 縫隙腐蝕 /
- 316L不銹鋼 /
- Cl^- /
- pH
Abstract: The solution chemistry in cuneiform crevice of 316L stainless steel was studied in 3.5%NaCl at room temperature.The Cl^-was concentrated and PH value decreased in the cuneiform crevice with two sizes of crevice opening. When the crevice opening is 1.36mm,the Cl^-concentration increased and PH value decreased with time and the distrance from the opening. The highest Cl^-concentration is 1.6mol/l and the lowest PH value is 5.01.When the opening is 0.22mm, the highest Cl^- is 1.1 mol/l and the lowest PH value is 3.1.The very low PH value in the crevice was formed by the hydrolysis of dissolving metal ions and Cl^-. The chloride can be very concentrated in the crevice. even be saturated.
- crevice corrosion /
- 316L stainless steel /
- Cl^- /
- PH

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文章訪問數: 244
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