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US 10,832,838 B1Granted
Ruthenium oxide powder, thick film resistor composition, thick film resistor paste, and thick film resistor
AssigneeSumitomo Metal Mining Co., Ltd.
InventorKatsuhiro Kawakubo
Life of this patent
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Abstract
A ruthenium oxide powder having a rutile crystal structure is provided, wherein a crystallite diameter D1, calculated from a peak of a (110) plane measured by an X-ray diffraction method, is 25 nm or more and 80 nm or less, a specific surface area diameter D2, calculated from a specific surface area, is 25 nm or more and 114 nm or less, and a ratio of the crystallite diameter D1 (nm) to the specific surface area diameter D2 (nm) satisfies a following formula (1). 0.70≤D1/D2≤1.00 (1)
Claims7
A ruthenium oxide powder having a rutile crystal structure, wherein
- a crystallite diameter D1, calculated from a peak of a (110) plane measured by an X-ray diffraction method, is 25 nm or more and 80 nm or less,
- a specific surface area diameter D2, calculated from a specific surface area, is 25 nm or more and 114 nm or less, and
- a ratio of the crystallite diameter D1 (nm) to the specific surface area diameter D2 (nm) satisfies a following formula (1)
- 0.70≤D1/D2≤1.00 (1).
1 more element
Dependencies are inferred from the claim text.