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ZnO/C composite ceramic resistor with adjustable temperature coefficient and preparation method thereof
The invention relates to the technical field of ceramic resistors, in particular to a ZnO/C composite ceramic resistor with an adjustable temperature coefficient and a preparation method thereof.The composite ceramic resistor comprises a ZnO inner core and conductive carbon particles distributed on the surface of the inner core, the composite ceramic resistor has two conductive paths, one is a zinc oxide conductive path, and the other is a zinc oxide conductive path. The resistance value of the second conductive carbon particle has a symbolic semiconductor characteristic along with the change of temperature, the resistance is reduced along with the rise of the temperature, an NTC effect is presented, and the conductive path of the second conductive carbon particle and the contact site of the conductive carbon particle are reduced along with the rise of the temperature and the expansion of the ceramic body, so that a PTC effect of a positive temperature coefficient is generated. Under the combination of the two effects, the effect of adjusting the resistance and the temperature coefficient is achieved, so that the application requirements are better met; according to the preparation method, the technological process is simple, operation is easy, the large-batch production and manufacturing requirement is met, and the prepared ZnO/C composite ceramic material is low in resistance value, high in temperature coefficient, suitable for high-precision temperature sensors and wide in application prospect.
本发明涉及陶瓷电阻技术领域，具体涉及一种温度系数可调的ZnO/C复合陶瓷电阻及其制备方法，本申请提供复合陶瓷电阻，包括ZnO内核和分布于内核表面的导电碳颗粒，其存在两种导电路径，一种为氧化锌导电路径，其阻值随温度的变化呈现标志性的半导体特征，随温度的升高电阻下降，呈现NTC效应，第二种导电碳颗粒导电路径，导电碳颗粒的接触位点随着温度的升高及陶瓷体的膨胀而减少，因此产生正温度系数的PTC效应，在两种效应的综合下达成电阻及温度系数可调的效果，以更好地满足应用需求；本申请提供的制备方法，其工艺流程简单，操作容易，满足大批量生产制造需求，制成的ZnO/C复合陶瓷材料阻值低，温度系数高，适用于高精度温度传感器，应用前景广阔。
ZnO/C composite ceramic resistor with adjustable temperature coefficient and preparation method thereof
The invention relates to the technical field of ceramic resistors, in particular to a ZnO/C composite ceramic resistor with an adjustable temperature coefficient and a preparation method thereof.The composite ceramic resistor comprises a ZnO inner core and conductive carbon particles distributed on the surface of the inner core, the composite ceramic resistor has two conductive paths, one is a zinc oxide conductive path, and the other is a zinc oxide conductive path. The resistance value of the second conductive carbon particle has a symbolic semiconductor characteristic along with the change of temperature, the resistance is reduced along with the rise of the temperature, an NTC effect is presented, and the conductive path of the second conductive carbon particle and the contact site of the conductive carbon particle are reduced along with the rise of the temperature and the expansion of the ceramic body, so that a PTC effect of a positive temperature coefficient is generated. Under the combination of the two effects, the effect of adjusting the resistance and the temperature coefficient is achieved, so that the application requirements are better met; according to the preparation method, the technological process is simple, operation is easy, the large-batch production and manufacturing requirement is met, and the prepared ZnO/C composite ceramic material is low in resistance value, high in temperature coefficient, suitable for high-precision temperature sensors and wide in application prospect.
本发明涉及陶瓷电阻技术领域，具体涉及一种温度系数可调的ZnO/C复合陶瓷电阻及其制备方法，本申请提供复合陶瓷电阻，包括ZnO内核和分布于内核表面的导电碳颗粒，其存在两种导电路径，一种为氧化锌导电路径，其阻值随温度的变化呈现标志性的半导体特征，随温度的升高电阻下降，呈现NTC效应，第二种导电碳颗粒导电路径，导电碳颗粒的接触位点随着温度的升高及陶瓷体的膨胀而减少，因此产生正温度系数的PTC效应，在两种效应的综合下达成电阻及温度系数可调的效果，以更好地满足应用需求；本申请提供的制备方法，其工艺流程简单，操作容易，满足大批量生产制造需求，制成的ZnO/C复合陶瓷材料阻值低，温度系数高，适用于高精度温度传感器，应用前景广阔。
ZnO/C composite ceramic resistor with adjustable temperature coefficient and preparation method thereof
一种温度系数可调的ZnO/C复合陶瓷电阻及其制备方法
CHEN YONGGANG (author) / WANG HAIZHEN (author) / LIAO HANQING (author) / ZHANG YI (author) / XIE QINGJIAN (author)
2024-02-23
Patent
Electronic Resource
Chinese
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