包装材料の腐食作用に関する研究 (第2報)

抄録

Corrosive examination on non-ferrous metals wrapped with package materials were carried out under the atmospheres of high humidity at high temperature and usual humidity at room temperature, then the specular reflection of specimens were measured. The relation between the content of corrosive components in package materials and the ratio of reflective intensity of specimens tested was studied stochastically. The results obtained were as follows:
(1) In the case of copper and brass, there was linear relation between the reflectivity and pH of package materials.
(2) Silver was tarnished by the reducible sulfur compound in package materials, nevertheless there was no relation between composition and reflectivity of metals.