C - Chemistry – Metallurgy – 23 – C
Patent
C - Chemistry, Metallurgy
23
C
148/9
C23C 17/00 (1980.01)
Patent
CA 1127514
ABSTRACT OF THE DISCLOSURE A method according to the present invention is intended for treating articles for magnetically soft alloys employed in radio-electronic, relay and switching apparatus, in optical-and- mechanical and automation systems. The method consists in sa- turating the surface of the articles with chromium inside a powder chromizing mixture at a temperature in excess of 800°C, the articles being heated at a rate not higher than that of re- crystallization of a metal of the articles and the rate of dif- fusion processes of saturating the articles. The articles are cooled at a rate close to that of phase transformations and for- mation of a magnetic structure in the metal of the articles, for example, at the rate of 20-200 degree/hour below the Curie point. To enhance the magnetic properties and the stability thereof, as well as wearability and the resistance of the items to corrosion, chromizing of the article surfaces is conducted in an inert gas atmosphere.
329198
Avrukh Elizaveta L.
Dubinin Georgy N.
Khramtsov Viktor V.
Kuznetsov Viktor F.
Petrova Mira P.
Marks & Clerk
Moskovsky Institut Inzhenerov Grazhdanskoi Aviatsii
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