頁籤選單縮合
題 名 | Crevice Corrosion of Stainless Steels in Chloride-Containing Solutions=不銹鋼間隙腐蝕的研究 |
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作 者 | 謝孝義; 陳文照; | 書刊名 | Journal of the Chinese Institute of Chemical Engineers |
卷 期 | 17:6 1986.11[民75.11] |
頁 次 | 頁411-418 |
分類號 | 440.365 |
關鍵詞 | |
語 文 | 英文(English) |
中文摘要 | 本實驗利用陰離子交換膜,陽離子交換膜及一般膜來隔開整體溶液與間隙內的溶液,藉此以探討304不銹鋼及316不銹鋼在不同膜及不同塩水濃度情況下的腐蝕情形。 結果顯示,當使用陰離子交換膜時,在所有塩水中(濃度為0.03%,0.1%,0.3%,1%,3%)304不銹鋼及316不銹鋼皆產生間隙腐蝕。 使用陽離子交換膜時,因氯離子進出的限制,304不銹鋼及316不銹鋼只有在高塩水濃度(3% NaCl)時,才有腐蝕產生。使用一般膜時由於其孔洞較大,間隙內的溶液易與整體溶液交換,所以只有304不銹鋼在3% NaCl中才有腐蝕產生。 在本實驗情況下,間隙腐蝕是否產生,可從電流的變化情況預先判別,並證實間隙內氯離子濃度及溶液進出之難易為產生間隙腐蝕之二主要因素。 |
英文摘要 | An electrochemical method utilizing ion-selective membranes for limiting ion transport between bulk and crevice solutions was tested for corrosion studies of stainless steels in chloride-containing solutions. Results clearly demonstrated that chloride ion was responsible for crevice-corrosion attack. Anionselective membrane accelerated crevice corrosion in NaCl solutions of all concentrations studied (0.03%, 0.1%, 0.3%, 1.0, 3.0%). For cation-selection and ordinary filtering membranes, specimens only showed slight corresion under high NaCl concentration (3%). Results also indicate that corrosion-current variation during experiments can provide a convenient means for predicting crevice corrosion before disassembling of specimen assembly. |
本系統中英文摘要資訊取自各篇刊載內容。