GB903488A - A relatively dense aggregate material, and method for the production thereof - Google Patents

A relatively dense aggregate material, and method for the production thereof

Info

Publication number
GB903488A
GB903488A GB4334860A GB4334860A GB903488A GB 903488 A GB903488 A GB 903488A GB 4334860 A GB4334860 A GB 4334860A GB 4334860 A GB4334860 A GB 4334860A GB 903488 A GB903488 A GB 903488A
Authority
GB
United Kingdom
Prior art keywords
lead
tungsten
particles
production
solidify
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
GB4334860A
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.)
RICHARD FREDERICK FRASER SMITH
Original Assignee
RICHARD FREDERICK FRASER SMITH
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 RICHARD FREDERICK FRASER SMITH filed Critical RICHARD FREDERICK FRASER SMITH
Priority to GB4334860A priority Critical patent/GB903488A/en
Publication of GB903488A publication Critical patent/GB903488A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/045—Alloys based on refractory metals
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-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)
  • Powder Metallurgy (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

A material having an aggregate density of not less than 12 gm./c.c. and particularly for use as a screen for harmful radiations or as a counterweight or balancing material consists of tungsten particles mechanically retained in a matrix of lead or lead alloy. The material may be made by one of the following methods: (1) pressing a homogeneous mixture of tungsten and lead particles preferably with simultaneous heating; (2) heating a homogeneous mixture of tungsten and lead particles to melt the lead and then allowing the binder to solidify; (3) introducing powdered tungsten into molten lead so that the powder particles contact each other and then allowing the binder to solidify; (4) in filtrating a loose mass of tungsten particles with molten lead. Lead alloy may replace the lead in each of the above methods.
GB4334860A 1960-12-16 1960-12-16 A relatively dense aggregate material, and method for the production thereof Expired GB903488A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4334860A GB903488A (en) 1960-12-16 1960-12-16 A relatively dense aggregate material, and method for the production thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4334860A GB903488A (en) 1960-12-16 1960-12-16 A relatively dense aggregate material, and method for the production thereof

Publications (1)

Publication Number Publication Date
GB903488A true GB903488A (en) 1962-08-15

Family

ID=10428383

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4334860A Expired GB903488A (en) 1960-12-16 1960-12-16 A relatively dense aggregate material, and method for the production thereof

Country Status (1)

Country Link
GB (1) GB903488A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2225479A (en) * 1988-11-25 1990-05-30 Du Pont Canada Method of attenuation of electromagnetic radiation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2225479A (en) * 1988-11-25 1990-05-30 Du Pont Canada Method of attenuation of electromagnetic radiation

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