A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
SEMICONDUCTOR CERAMIC COMPOSITION AND PTC THERMISTOR
A semiconductor ceramic composition which is a BaTiO 3 based semiconductor ceramic composition, wherein, part of Ba is replaced by at least A (at least one alkali metal element selected from Na and K), Bi and RE (at least one element selected from rare earth elements including Y), and part of Ti is replaced by at least TM (at least one element selected from the group including of V, Nb and Ta), the relationships of 0.7¤ {(the content of Bi) / (the content of A)}¤1.43, 0.017¤{(the content of Bi) + (the content of A)}¤0.25, and 0< {(the content of RE) + (the content of TM)}¤0.01 are satisfied when the total content of Ti and TM is set as 1mol, the grain sizes have a maximum peak in a grain size distribution in a range of 1.1µm to 4.0µm or less, and the distribution frequency of the peak is 20% or more.
SEMICONDUCTOR CERAMIC COMPOSITION AND PTC THERMISTOR
A semiconductor ceramic composition which is a BaTiO 3 based semiconductor ceramic composition, wherein, part of Ba is replaced by at least A (at least one alkali metal element selected from Na and K), Bi and RE (at least one element selected from rare earth elements including Y), and part of Ti is replaced by at least TM (at least one element selected from the group including of V, Nb and Ta), the relationships of 0.7¤ {(the content of Bi) / (the content of A)}¤1.43, 0.017¤{(the content of Bi) + (the content of A)}¤0.25, and 0< {(the content of RE) + (the content of TM)}¤0.01 are satisfied when the total content of Ti and TM is set as 1mol, the grain sizes have a maximum peak in a grain size distribution in a range of 1.1µm to 4.0µm or less, and the distribution frequency of the peak is 20% or more.
SEMICONDUCTOR CERAMIC COMPOSITION AND PTC THERMISTOR
KERAMISCHE HALBLEITERZUSAMMENSETZUNG UND PTC-THERMISTOR
COMPOSITION CÉRAMIQUE DE SEMI-CONDUCTEUR ET THERMISTANCE CTP
ITOH KAZUHIKO (author) / SHIMURA YOSHIKAZU (author) / FUJITA KAZUTAKA (author) / MORIKOSHI HIROKI (author) / TERADA TOMOHIRO (author)
2017-08-09
Patent
Electronic Resource
English