A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
SEMICONDUCTOR CERAMIC COMPOSITION AND PTC THERMISTOR
The present invention provides a semiconductor ceramic composition comprising a compound represented by the following general formula (1) as a main component. Ba v Bi x A y RE w m Ti u TM z O 3 (wherein, A represents both elements of Na and K; RE is at least one element selected from the group consisting of Y, La, Ce, Pr, Nd, Sm, Gd, Dy and Er; and TM is at least one element selected from the group consisting of V, Nb and Ta.) 0.1 ¤ x ¤ 0.15 x ¤ y ¤ 0.3 0 ¤ w + z ¤ 0.01 v + x + y + w = 1 u + z = 1 0.950 ¤ m ¤ 1.050 further, 0.001mol to 0.055mol of Ca is comprised and the ratio of Na/(Na+K) is 0.1 or more and less than 1.
SEMICONDUCTOR CERAMIC COMPOSITION AND PTC THERMISTOR
The present invention provides a semiconductor ceramic composition comprising a compound represented by the following general formula (1) as a main component. Ba v Bi x A y RE w m Ti u TM z O 3 (wherein, A represents both elements of Na and K; RE is at least one element selected from the group consisting of Y, La, Ce, Pr, Nd, Sm, Gd, Dy and Er; and TM is at least one element selected from the group consisting of V, Nb and Ta.) 0.1 ¤ x ¤ 0.15 x ¤ y ¤ 0.3 0 ¤ w + z ¤ 0.01 v + x + y + w = 1 u + z = 1 0.950 ¤ m ¤ 1.050 further, 0.001mol to 0.055mol of Ca is comprised and the ratio of Na/(Na+K) is 0.1 or more and less than 1.
SEMICONDUCTOR CERAMIC COMPOSITION AND PTC THERMISTOR
HALBLEITERKERAMIKZUSAMMENSETZUNG UND PTC-THERMISTOR
COMPOSITION DE CÉRAMIQUE SEMI-CONDUCTRICE ET THERMISTANCE CTP
FUJITA KAZUTAKA (author) / ITOH KAZUHIKO (author) / SHIMURA YOSHIKAZU (author)
2019-10-02
Patent
Electronic Resource
English