Compositions – Inorganic luminescent compositions – Tungsten containing
Patent
1988-09-09
1990-02-27
Hunt, Brooks H.
Compositions
Inorganic luminescent compositions
Tungsten containing
2523131, 2523132, 252314, 264212, 501 1, 501 94, 501 97, 501 98, 501103, 501126, 501127, 501133, 501137, 501 96, 501138, 501139, 501152, 501153, 501154, 501154, B01J 1302, C04B 3502, C04B 3510, C04B 3332
Patent
active
049044117
ABSTRACT:
Slurries or suspensions for forming sintered ceramic or metallic articles are described as having a high volume fraction of sinterable particles, at least 55% by volume. while the slurries maintain a pourable viscosity, such as not more that 2000 cPs at 100 s.sup.-1 ; the slurries can be dilatant and/or pseudoplastic. The slurries are prepared by using specific families of dispersants; namely acrylic acid-based polymeric polyelectrolytes, polyethylene imine-based polyelectrolytes, and coupling agents from the subfamilies of oxy-silane esters and phosphate esters. Fabrication of the compositions includes milling under high energy and the addition of at least a portion of the particles in a step-wise manner.
REFERENCES:
patent: 3956145 (1976-05-01), Christopher, Jr. et al.
patent: 4221697 (1980-09-01), Osborn et al.
patent: 4301020 (1981-11-01), Johnson, Jr. et al.
patent: 4569920 (1986-01-01), Smith-Johannsen
patent: 4728578 (1988-03-01), Higgins et al.
Novich Bruce E.
Occhionero Mark A.
Pober Richard L.
Caress Virginia B.
Ceramics Process Systems Corp.
Hunt Brooks H.
Ruben Bradley N.
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