Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Negative temperature coefficient thermistor raw material composition and application thereof
The invention discloses a negative temperature coefficient thermistor raw material composition, a negative temperature coefficient thermosensitive composition, a preparation method of the negative temperature coefficient thermosensitive composition and a preparation method of a negative temperature coefficient thermistor chip. The negative temperature coefficient thermistor raw material composition is prepared from the following components in percentage by mass: 30 to 65 percent of Mn3O4, 5 to 45 percent of Co3O4, 5 to 25 percent of NiO, 5 to 30 percent of Fe2O3, 0.5 to 2.0 percent of Nd2O3 and 1 to 10 percent of Al(NO3)3.9H2O. Al<3+> is introduced into the negative temperature coefficient thermistor raw material composition in an aluminum nitrate form instead of an Al2O3 solid form; the aluminum nitrate is good in water solubility and is easily and uniformly distributed in the composition, so that the deviation between a resistance value and B value can be reduced, and electrical resistivity and B value precision are improved; in addition, by adding high-enthalpy rare earth oxide Nd2O3, the enthalpy of oxide is 1783KJ/mol, and the oxides do not easily generate chemical reaction at high temperature, so that the ageing influence caused by chemical changes is reduced, and further the electrical stability of the thermistor is improved.
Negative temperature coefficient thermistor raw material composition and application thereof
The invention discloses a negative temperature coefficient thermistor raw material composition, a negative temperature coefficient thermosensitive composition, a preparation method of the negative temperature coefficient thermosensitive composition and a preparation method of a negative temperature coefficient thermistor chip. The negative temperature coefficient thermistor raw material composition is prepared from the following components in percentage by mass: 30 to 65 percent of Mn3O4, 5 to 45 percent of Co3O4, 5 to 25 percent of NiO, 5 to 30 percent of Fe2O3, 0.5 to 2.0 percent of Nd2O3 and 1 to 10 percent of Al(NO3)3.9H2O. Al<3+> is introduced into the negative temperature coefficient thermistor raw material composition in an aluminum nitrate form instead of an Al2O3 solid form; the aluminum nitrate is good in water solubility and is easily and uniformly distributed in the composition, so that the deviation between a resistance value and B value can be reduced, and electrical resistivity and B value precision are improved; in addition, by adding high-enthalpy rare earth oxide Nd2O3, the enthalpy of oxide is 1783KJ/mol, and the oxides do not easily generate chemical reaction at high temperature, so that the ageing influence caused by chemical changes is reduced, and further the electrical stability of the thermistor is improved.
Negative temperature coefficient thermistor raw material composition and application thereof
TANG BIN (Autor:in) / ZHOU QINGBO (Autor:in) / LI QIANG (Autor:in)
17.02.2016
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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