Specialized metallurgical processes – compositions for use therei – Processes – Producing or purifying free metal powder or producing or...
Patent
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.
Ebenhoech Franz L.
Schlegel Reinhold
BASF - Aktiengesellschaft
Dean R.
Wyszomierski George
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