Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB6704/36A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Philips Gloeilampenfabrieken NVfiledCriticalPhilips Gloeilampenfabrieken NV
Publication of GB476656ApublicationCriticalpatent/GB476656A/en
C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C22C—ALLOYS
C22C38/00—Ferrous alloys, e.g. steel alloys
C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
Abstract
Permanent magnets are made by melting iron with 15-25 per cent of nickel, 7-15 per cent of aluminium, and one or more of the metals titanium, zirconium, and antimony, and cooling the casting without quenching. In making the alloy, the titanium may be added in the form of an alloy consisting of 59,4 per cent of iron, 26,2 per cent of titanium, 1,4 per cent of silicon, 0,0067 per cent of carbon, 3 per cent of copper, and 10 per cent of aluminium, and the aluminium is preferably added last. The dimensions of the magnets are preferably such that the ratio between the surface in square mm. and the volume in cubic mm. is about 1 : 3,5.
GB6704/36A1935-03-051936-03-05Steel alloy for making permanent magnets
ExpiredGB476656A
(en)