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Electrical resistor and method of making the same
| Details |
Inventors: Holmes, Curtis L.; Faber, Sr., William M.; Francis, Gaylord L.; Boykin, Otis F.;
Assignee: CTS Corporation (Elkhart, IN)
Primary Examiner:
Assistant Examiner:
Attorney, Agent or Firm:
Disclosed is a method for making glass bonded metal oxide electric resistors involving including in the mixture a refractory oxide for providing configuration stability during firing. |
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DETAILED DESCRIPTION What is claimed as new and desired to be secured by Letters Patent of the United States is: 1.
A resistor composition comprising a mixture of a finely divided glass, at least 0.
2 percent by weight of the total composition of a finely divided oxide of a noble metal selected from the group consisting of iridium oxide and ruthenium oxide, and 30 percent to 70 percent by weight of the total composition of a finely divided refractory filler oxide, the ratio of the glass to the refractory filler oxide being such that the composition may be formed into a desired shape and fired at a temperature sufficiently high to fuse the glass without changing the shape.
2.
The resistor composition of claim 1, wherein the refractory filler oxide is selected from the group consisting of alumina, silica, beryllia, feldspar, chromic oxide, kaolin, titania, zinc oxide and zirconia.
3.
A resistor composition comprising a mixture of a finely divided refractory filler oxide, finely divided glass particles, and at least 0.
2 percent by weight of the total composition of at least one of the metal oxides selected from the group consisting of iridium oxide and ruthenium oxide, and obtained by the pyrolytic decomposition of an iridium resinate or a ruthenium resinate.
4.
A resistor composition comprising a mixture of a finely divided refractory filler oxide, finely divided glass particles, and at least 0.
2 percent by weight of the total composition of a plurality of a metal and a metal oxide, the metal oxide comprising 50 to 90 percent by weight ruthenium oxide and the metal comprising 10 to 50 percent by weight platinum, both the metal and the metal oxide being obtained by pyrolytic decomposition of ruthenium resinate and platinum resinate.
5.
A resistor composition comprising a mixture of a finely divided refractory filler oxide, at least 30 percent by weight of the total composition of finely divided glass particles, and at least 0.
2 percent by weight of the total composition of a plurality of metal oxides, the metal oxides comprising 1 to 99 percent by weight ruthenium oxide and 1 to 99 percent by weight iridium oxide, both metal oxides being obtained by pyrolytic decomposition of resinates containing the metal included in the metal oxides
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