著者

北村 義治 伊藤 順一

出版者

Japan Society of Corrosion Engineering

雑誌

防蝕技術 (ISSN:00109355)

巻号頁・発行日

vol.13, no.6, pp.256-261, 1964-06-15 (Released:2009-11-25)

参考文献数

3

---

The corrosion of austenitic stainless steels and titanium in the aqueous solutions of several amino acid and their salts was investigated. The total immersion tests, the cell voltage-current curve method and the potentiostatic polarization curve method were adopted.The following experimental results were obtained: The aqueous solutions of acidic amino acids such as glutamic acid or homocysteic acid were comparatively corrosive, while neutral and basic amino acids scarcely; the corrosive behaviors of acid and basic salts of various amino acids bore some resemblance to those of acids and bases which were estimated to be freed from the salts.It is suggested that amino acids, which form salts with acids or bases, might have some neutralizing action on them, resulting in reduction in the corrosive effects of these salt solutions.

著者

岡野 一良 北村 義治 高橋 礼治

出版者

Japan Society of Corrosion Engineering

雑誌

防蝕技術 (ISSN:00109355)

巻号頁・発行日

vol.4, no.1, pp.27-30, 1955

---

An U-fin heater used as an air heater for drying powder materials was damaged due to corrosion of the heating copper tubes. As the results of experiments, it was concluded that the corrosion was caused by the adhesion of solder to inner surface of the copper tube. In order to remove the solder, some methods both by chemicals and by electrolysis were examined. Although we have not yet found a method, which removes the solder completely and not affects copper tubes, we obtained some promising method, especially one by chemicals.