有機酸溶液中におけるステンレス鋼の腐食に関する研究 (第6報)
飽和モノカルボン酸中のFe-Cr合金について (その1)
1973 年 22 巻 1 号 p. 10-17
詳細
1973 年 22 巻 1 号 p. 10-17
Polarization and weight loss tests on iron-chromium alloys were conducted in saturated monocarboxylic acid solutions. The results obtained were as follows:
(1) The critical current density and passive current density decreased as increasing the chromium content in alloys.
(2) Alloys of high chromium content began to dissolve in the hexavalent condition of chromium at a potential of about Eh=1.2V in the same manner as in inorganic acid solutions.
(3) The corrosion rate of alloys containing up to 18% Cr was greater than that of pure iron in formic and acetic acid solutions. But, in propionic and butyric acid solutions, the corrosion rate decreased gradually as chromium content increased.
(4) The corrosion rate decreased as increasing the carbon content in saturated monocarboxylic acids.
