Ceramic foam filters low corrosion resistant cast aluminum filtration expansion.

摘要

Ceramic foam filter for alloys cast aluminum comprising a rich core aluminosilicate and a cover glass of boron and a chemical composition comprising: 20 to 70% by weight of Al 2 O 3, 20 to 60 wt% SiO 2, 0 to 25% by weight of at least one oxide of group II and 2 to 20% by weight of B 2O 3.