アルミニウムホウロウの風化現象について

抄録

Resistance to weather of the bolosilicate, lead, and phosphate enamels, used as building material, was examined by comparing the results obtained from the weather meter test with those from the exposition-to-weather test.
1. The enamels of borosilicate system was eroded in a shorter time both in the weather meter test (exposition to ultra-violet rays) and in the exposition-to-weather test.
2. The enamels of lead and phosphate systems showed a higher resistance to efflorescence both in the weather meter test and in the exposition-to-weather test.
The resistance to acid of the enamels of lead system, however, was lower than those of phosphate system. The latter, therefore, is more recommendable for a building material such as panelling.