Patent ID: 11945756
Assignee: APPLIED THIN FILMS, INC.
Field: Materials, metallurgy (Chemistry)
Classification: CPC C  F  Y | IPC C  F

Claim 0:
1. A coated material, comprising:
a porous inorganic substrate having an internal pore system comprising internal pores and interconnected interior channels in open communication with an exterior surface of the porous substrate, and having an initial open porosity with a mean pore diameter of up to 5 micrometers prior to coating; and
a cured phospho-alumina coating having a thickness of 1 nm to 500 nm that conformally coats walls of the internal pores and the interconnected interior channels, the phosphor-alumina coating having an aluminum-to-phosphorous atomic ratio of 0.5:1 to 20:1;
wherein the internal pore system is substantially maintained such that the coated material comprises internal pores and interconnected interior channels in open communication with an exterior surface of the coated material, and
wherein the coated material has an open porosity that is at least 50% of the initial open porosity of the porous substrate prior to coating.