C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
C04B 41/86 (2006.01) B32B 18/00 (2006.01) C03C 3/145 (2006.01) C03C 8/02 (2006.01) C03C 10/00 (2006.01) C04B 41/52 (2006.01) C04B 41/87 (2006.01) C04B 41/89 (2006.01)
Patent
CA 2044060
Abstract of the Disclosure For protection against oxidation or other adverse chemical deterioration, substrates such as carbon, inter- metallic aluminides, and refractory metal alloys are provided with barrier coatings of an aluminoborate glass- ceramic coating having a composition, in weight percent, of about 10-55% Al2O3, 4-40% B2O3, up to 70% total of RO, wherein RO consists of one or more alkaline earth metal oxides selected in amounts not exceeding the indicated proportions from the group consisting of up to 70% BaO, up to 60% SrO, up to 40% CaO, and up to 25% MgO, up to 35% total of R2O, wherein R2O consists of one or more alkali metal oxides selected in amounts not exceeding the indicated proportion from the group consisting of up to 35% Na2O, up to 30% K2O, and up to 15% Li2O, up to 25% total of metal oxides selected from the group consisting of ZnO and MnO, up to 30% of SiO2, and up to 10% F.
Andrus Ronald L.
Macdowell John F.
Corning Incorporated
Gowling Lafleur Henderson Llp
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