Method for forming a carbide layer of a Va-Group element of the

Details Method for forming a carbide layer of a Va-Group element of the Method for forming a carbide layer of a Va-Group element of the

1978-05-04

1979-06-19

Kendall, Ralph S.

Metal treatment

Compositions

Heat treating

427399, 427431, C23C 910

Patent

active

041585780

ABSTRACT:
A method for forming a boron-containing carbide layer on the surface of a ferrous alloy article by dipping the article in a molten bath. The bath is made by introducing boron and an oxide of a Va-Group element or of chromium into molten boric acid or a borate bath. The ratio of the boron to the oxide is between 7% and 40%. The carbide layer formed is very hard and has good oxidation resistance.

REFERENCES:
patent: 3671297 (1972-06-01), Komatsu et al.
patent: 3719518 (1973-03-01), Komatsu et al.
patent: 3885059 (1975-05-01), Komatsu et al.
patent: 3912827 (1975-10-01), Komatsu et al.
patent: 3922405 (1975-11-01), Komatsu et al.
patent: 3930060 (1975-12-01), Komatsu et al.
Periodic Table of the Elements, Handbook of Chemistry and Physics, 54th Ed. 1973.

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