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Expired
Application number
GB7358/52A
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British Thomson Houston Co Ltd
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British Thomson Houston Co Ltd
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Publication of GB697595ApublicationCriticalpatent/GB697595A/en
C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C22C—ALLOYS
C22C5/00—Alloys based on noble metals
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Chemical & Material Sciences
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Engineering & Computer Science
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Materials Engineering
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Mechanical Engineering
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Metallurgy
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Organic Chemistry
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Hard Magnetic Materials
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Abstract
Magnet alloys having the composition Co 17.0-23.5 per cent, balance Pt, are treated to obtain high energy and high coercive force by subjecting them to disordering treatment at a temperature of at least 850 DEG C, cooling at a rate in the range 0.5-50 DEG C per second to a temperature not exceeding 300 DEG C and annealing at a temperature in the range 550-650 DEG C for from 2-50 hours.
GB7358/52A1951-03-221952-03-21Improvements in and relating to cobalt-platinum magnets
ExpiredGB697595A
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