1,1,1-トリクロロエタンによるアルミニウム溶解の抑制剤に対する誘導期テストとスクラッチテストとの相関分析

概要

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The inhibiting effect of various organic reagents on the dissolution of aluminum (Al) by 1, 1, 1-trichloroethane (CCl3CH3) was expressed quantitatively in terms of reagent concentrations measured by two different methods 1) critical concentration, in which the induction period was extended to over 1000min in boiling solution, and 2) effective concentration, which inhibits dissolution in the scratch test at room temperature. The correlation between these two types of concentration measurement was analyzed. The dissolution inhibitors were classified into two groups-one comprising esters and ethers, and the other comprising amines, alcohols, ketones, nitriles, nitrocompounds and amides-and regression equations correlating the two types of concentration were obtained for each group. Estimates of induction period critical concentration derived from measured scratch test effective concentration using the regression equations agreed precisely with the experimental results.
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