Resistor composition, resistor produced therefrom, and method of

Details Resistor composition, resistor produced therefrom, and method of Resistor composition, resistor produced therefrom, and method of

1988-09-20

1990-08-14

Reynolds, Bruce A.

Electrical resistors

With base extending along resistance element

Resistance element coated on base

338307, 361400, 361402, H01C 1012

Patent

active

049490656

ABSTRACT:
A resistor composition containing no boride powder is obtained by mechanical grinding of at least one of silicon, silicon monoxide and higher oxidation state precursor of silicon monoxide; and a borosilicate glass containing at least one of zirconium oxide, vanadium pentoxide, chromium oxide, tungsten trioxide, molybdenum trioxide, manganese oxide, titanium oxide, niobium pentoxide and tantalum pentoxide, which are capable of being reduced with silicon, silicon monoxide or higher oxidation state precursor of silicon monoxide. In a sintering step in a non-oxidizing atmosphere, boron oxide and at least one another oxide contained in the borosilicate glass are reduced by silicon, silicon monoxide, higher oxidation state precursor of silicon monoxide or silicide, and metal elements of the oxides contained in the glass combine with each other, so that fine particles of boride are precipitated around glass particles to form a graze resistor.

REFERENCES:
patent: 4039997 (1977-08-01), Huang et al.
patent: 4119573 (1978-10-01), Ishida et al.
patent: 4225468 (1980-09-01), Donohue et al.
patent: 4512917 (1985-04-01), Donohue
patent: 4695504 (1987-09-01), Watanabe et al.
Donohue et al., Proceedings of 1987 Electronic Components Conference, Nitrogen-Fireable Resistors: Emerging Technology for Thick Film Resistors, May, 1987.

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