发明名称 |
CHROMATE-FREE CERAMIC COATING COMPOSITIONS |
摘要 |
A novel chromate-free multi-layer coating system composed of a lithium-doped potassium silicate binder based basecoat composition that is sealed with an aluminum phosphate-based top coat composition is described. The multi-layer coating system exhibits superior corrosion and heat oxidation resistance which can replace traditional chromate-containing coating systems. |
申请公布号 |
US2015183998(A1) |
申请公布日期 |
2015.07.02 |
申请号 |
US201514657536 |
申请日期 |
2015.03.13 |
申请人 |
BELOV IRINA;COPELAND DARYL G. |
发明人 |
BELOV IRINA;COPELAND DARYL G. |
分类号 |
C09D5/08 |
主分类号 |
C09D5/08 |
代理机构 |
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代理人 |
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主权项 |
1. Aqueous slurries compositions for the production of a multilayer coating system on a substrate comprising:
a basecoat slurry, comprising:
a binder comprising an aqueous solution of lithium doped potassium silicate, the binder characterized by an absence of chromium; andan aluminum or aluminum alloy powder incorporated into the binder, wherein the aluminum or the aluminum alloy powder and the binder are contained as a one-part composition;wherein the aluminum or aluminum alloy powder comprises a particle size distribution characterized in that the 50th percentile of the particle size distribution has a diameter of between about 4 to 7 microns and the 90th percentile of the particle size distribution has a diameter of less than or equal to about 11.5-15.5 microns; and a topcoat slurry wherein said topcoat slurry comprises an aqueous solution of an aluminum phosphate based binder having a molar ratio of Al:PO4 of higher than about 1:3. |
地址 |
ZIONSVILLE IN US |