Compositions: coating or plastic – Coating or plastic compositions – Carbohydrate or derivative containing
Patent
1982-08-20
1984-01-03
Poer, James
Compositions: coating or plastic
Coating or plastic compositions
Carbohydrate or derivative containing
106300, 106308B, C09D 538
Patent
active
044240775
ABSTRACT:
A protective film for metallic articles against penetration of nitrogen, carbon and boron at chemical-heat treatment by means of glow discharge plasma at a temperature ranging from 450.degree. to 950.degree. C.
A protective coating is formed on the metallic article by a dispersed mixture of tin and lead absorbed on titanium dioxide containing 35 to 60% by weight of colloidally dispersed tin, 5 to 10% by weight of colloidally dispersed lead, 10 to 23% by weight of titanium dioxide, 5 to 10% by weight of a binding agent such as methyl methacrylate, and the remainder up to 100% by weight is an organic solvent such as toluene, xylene, and ethyl acetate. The mixture is used as a protective coating against penetration of nitrogen, carbon and boron at a chemical-heat treatment by means of a glow discharge plasma at a temperature range from 450.degree. to 950.degree. C.
REFERENCES:
patent: 2845660 (1958-08-01), Peiler
Poer James
Statni vyzkumny ustav materialu
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