Zirconium-containing coating composition

Details Zirconium-containing coating composition Zirconium-containing coating composition

1988-09-02

1989-08-15

Seidel, Richard K.

Metal founding

Process

Shaping liquid metal against a forming surface

164138, 164514, 373 67, 373 72, 75 65R, B22D 4102

Patent

active

048565768

ABSTRACT:
A paint or coating composition which contains only pure Ziroconium containing compounds, and a small amount of NH.sub.4 (OH).sub.2 and acid is applied to the vertical walls of a vacuum arc furnace Copper crucible to form a stable, substantially uniform, coating thereon. The Zirconium coating composition of the present invention is free of Aluminum and Aluminum compounds and consists essentially of Zirconium Oxide suspended in a water-based Zirconyl Nitrate gel, to which small amounts of base and acid have been sequentially added. This coating eliminates the introduction of spurious impurities into the surface of the zirconium ingot formed during vacuum are melting of a zirconium compact.

REFERENCES:
patent: 3049432 (1962-08-01), Weber
patent: 3280059 (1966-10-01), Giesen
patent: 3417808 (1968-12-01), Rosenberg
patent: 4504591 (1985-03-01), Feagin
patent: 4700769 (1987-10-01), Ohara et al.
patent: 4740246 (1988-04-01), Feagin

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