Method of making a zinc sulphide ceramic body and a zinc sulphid

Details Method of making a zinc sulphide ceramic body and a zinc sulphid Method of making a zinc sulphide ceramic body and a zinc sulphid

1974-10-15

1977-07-12

Esposito, Michael F.

Compositions: coating or plastic

Coating or plastic compositions

Alkali metal silicate containing

357 16, 106 70, 252 623ZB, 252 623ZT, 2523016S, 264 61, 264 62, 264 82, 427 74, 427 79, 427 87, 427100, 427101, 427126, 428539, 428469, H01L 2912

Patent

active

040358194

ABSTRACT:
A method of making a zinc sulphide ceramic body having a low electrical resistance characterized by sulphurizing a starting oxide material consisting essentially of zinc oxide and from 0.01 atomic % to 6.0 atomic % of at least one oxide of a metal selected from the group consisting of aluminum, magnesium, nickel, cobalt, cadmium, lead, indium, bismuth, antimony, titanium, zirconium, silicon, tin, niobium, tantalum, tungsten, and the rare earth element metals in a carbon disulphide atmosphere at a temperature in the range of 700.degree. C to 1000.degree. C. This zinc sulphide ceramic body can be formed into non-linear elements such as phosphors, photoconductors, luminescent elements, varistors, piezoelectric transducers, capacitors and combinations thereof. Particularly, by using this zinc sulphide body in light emitting elements, the luminous efficiency as well as the working voltage can be improved.

REFERENCES:
patent: 2310424 (1943-02-01), Goodman
patent: 2310425 (1943-02-01), Goodman
patent: 2573817 (1951-11-01), Thomsen
patent: 2802792 (1957-08-01), Butler
patent: 2908588 (1959-10-01), Harper
patent: 3691088 (1972-09-01), Pelton
patent: 3704232 (1972-11-01), Frey
patent: 3791844 (1974-02-01), Tecotzky

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