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
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Solution Chemistry in Cuneiform Crevice of 316L Stainless Seel

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  • 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.
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