GB615941A - Improvements in or relating to methods of making permanently magnetizable material, and the improved permanently magnetizable material resulting therefrom - Google Patents

Improvements in or relating to methods of making permanently magnetizable material, and the improved permanently magnetizable material resulting therefrom

Info

Publication number
GB615941A
GB615941A GB23089/46A GB2308946A GB615941A GB 615941 A GB615941 A GB 615941A GB 23089/46 A GB23089/46 A GB 23089/46A GB 2308946 A GB2308946 A GB 2308946A GB 615941 A GB615941 A GB 615941A
Authority
GB
United Kingdom
Prior art keywords
magnetizable material
permanently magnetizable
aluminium
per cent
relating
Prior art date
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
GB23089/46A
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.)
Indiana Steel Products Co
Original Assignee
Indiana Steel Products Co
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 Indiana Steel Products Co filed Critical Indiana Steel Products Co
Publication of GB615941A publication Critical patent/GB615941A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/16—Making metallic powder or suspensions thereof using chemical processes
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Hard Magnetic Materials (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

In a method of making permanently magnetizable material an iron-aluminium alloy containing 45-75 per cent of aluminium is treated with hot aqueous caustic alkali to dissolve the aluminium, the undissolved iron containing particles being collected as a wet paste and compacted while wet to produce a shape which is magnetized. The caustic alkali may range from a 50 per cent solution to a concentrated solution of caustic soda or caustic potash and the treatment continued until not more than 5 per cent of aluminium remains in the alloy. The shapes may be immersed in oil at 125 DEG C. to dehydrate them and stabilize them against oxidation.
GB23089/46A 1945-08-13 1946-08-02 Improvements in or relating to methods of making permanently magnetizable material, and the improved permanently magnetizable material resulting therefrom Expired GB615941A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US615941XA 1945-08-13 1945-08-13

Publications (1)

Publication Number Publication Date
GB615941A true GB615941A (en) 1949-01-13

Family

ID=22036810

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23089/46A Expired GB615941A (en) 1945-08-13 1946-08-02 Improvements in or relating to methods of making permanently magnetizable material, and the improved permanently magnetizable material resulting therefrom

Country Status (1)

Country Link
GB (1) GB615941A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2744011A (en) * 1950-04-11 1956-05-01 Diffusion Alloys Ltd Process for the manufacture of sintered articles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2744011A (en) * 1950-04-11 1956-05-01 Diffusion Alloys Ltd Process for the manufacture of sintered articles

Similar Documents

Publication Publication Date Title
GB662800A (en) Improvements in or relating to the preparation of salts of cyclohexylsulphamic acid
GB615941A (en) Improvements in or relating to methods of making permanently magnetizable material, and the improved permanently magnetizable material resulting therefrom
GB621128A (en) Improvements in or relating to processes of treating starch and dextrin and the improved products resulting therefrom
GB686520A (en) Method of improving coffee
SU497373A1 (en) Method of bleaching cotton pulp
GB680435A (en) Improvements in or relating to the treatment of zinc surfaces
US2180769A (en) Process for producing easily soluble coerulein derivatives
GB471057A (en) Improvements in or relating to the carroting of fur and the like
GB655514A (en) Electrolytic process for the surface treatment of aluminium or aluminium alloys
GB944292A (en) Preparation of titanium dioxide pigments
GB719269A (en) Improvements relating to the manufacture of electric discharge lamps
GB441919A (en) Improvements in the manufacture and production of nitrodibenzanthrones
GB651702A (en) Process for the chemical treatment of sand for glass-making
GB645750A (en) Improvements in and relating to the purification of polymyxin
GB692449A (en) Improvements in caustic alkali composition of matter and its use as a poly-valent metal precipitation inhibitor
GB637369A (en) Improved method of making electrolytic condensers
GB982532A (en) Improved process for preparing and for purifying octachlorodihydroxydiphenyl
GB221980A (en) Process or method of converting fabrics, and fabrics produced thereby
GB628487A (en) Improved process of producing alkali metal chlorites from chlorine dioxide
GB578682A (en) Improvements in the process of making sulphaguanidine
GB774585A (en) Improvements in or relating to treatment of silica
GB610714A (en) Process of converting lignin predominantly into its aldehydic and acidic fractions
GB359397A (en) Improvements in the manufacture and production of anthraquinone derivatives
GB485805A (en) Improved concentrated casein solutions having an acid reaction
GB600109A (en) Improvements in and relating to asbestos products and method of preparation