Preparation of iron whiskers

Details Preparation of iron whiskers Preparation of iron whiskers

1990-11-20

1992-02-04

Dean, R.

Specialized metallurgical processes, compositions for use therei

Processes

Producing or purifying free metal powder or producing or...

75413, C21B 1504

Patent

active

050856901

ABSTRACT:
Iron whiskers are produced by thermal decomposition of iron pentacarbonyl vapor in an indirectly heated empty-space decomposer in which the cross-sectional area for entry of the iron pentacarbonyl into the empty-space decomposer is from 10 to 40% of the cross-sectional area of the empty-space decomposer, the mass flow density of the iron pentacarbonyl vapor, based on the cross-sectional area of the decomposer, is from 0.01 to 0.07 kg per square meter per second, and the temperature in the empty-space decomposer should at no point be below 360.degree. C.

REFERENCES:
patent: 3694188 (1972-09-01), Llewelyn
patent: 4056386 (1977-11-01), McEwan et al.
patent: 4652305 (1987-03-01), Ebenhoech et al.
patent: 4915728 (1990-04-01), Schell
Beischer, Abscheidungsformen des Eisens bei der thermischen Zersetzung usw., Bd. 45, Nr. 4, 1939.

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