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NTC thermistor material using neodymium and niobium as semiconducting doping elements, and preparation method thereof

A technology of thermistor and resistance material, applied in the direction of resistors, resistors, non-adjustable metal resistors with negative temperature coefficient, etc., to achieve the effect of low sintering temperature, abundant raw materials and great flexibility

Inactive Publication Date: 2019-10-22
SHANDONG GREEN TEC MOTOR DRIVEN TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The current thermistor materials still have many uncontrollable factors in terms of electrical characteristics such as stability, resistance value, material constant, and temperature coefficient of resistance. Therefore, the applicant proposed a NTC thermistor with neodymium and niobium as a semiconducting Materials and their preparation methods

Method used

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  • NTC thermistor material using neodymium and niobium as semiconducting doping elements, and preparation method thereof
  • NTC thermistor material using neodymium and niobium as semiconducting doping elements, and preparation method thereof

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Embodiment Construction

[0020] The present invention adopts the MnCO of analytical purity 3 , NiO, Fe 2 o 3 、Co 2 o 3 Prepare the main crystal phase as the raw material, with the purity of 4N Nd 2 o 3 , Nb 2 o 5 Carry out doping, the specific implementation method is as follows:

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Abstract

The invention discloses an NTC thermistor material using neodymium and niobium as semiconducting doping elements, and a preparation method thereof, and belongs to the technical field of electronic information functional materials and devices, wherein the oxides of manganese, nickel, iron and cobalt are used as main components, neodymium and niobium are used as semiconducting doping elements, a solid phase reaction method is used, and ball milling, drying, pre-firing, secondary ball milling, drying, crushing screening and other steps are performed. According to the present invention, the NTC thermistor material has good stability, the electrical properties such as resistance value, material constant, resistance temperature coefficient and the like can be controlled, and the NTC thermistor material is suitable for the fields of temperature measurement, temperature control, line compensation, the protection of circuits and electronic components, and instruments for measuring flows, flow rates and rays, and applications thereof.

Description

technical field [0001] The invention belongs to the technical field of electronic information functional materials and devices, and specifically relates to an NTC thermistor material with high porcelain density, spinel structure, stable resistivity and B value and a preparation method thereof. Background technique [0002] NTC (Negative Temperature Coefficient) refers to the thermistor phenomenon and material with a negative temperature coefficient that decreases exponentially with temperature rise. The material is a semiconductor ceramic made by fully mixing, molding, and sintering two or more metal oxides such as manganese, copper, silicon, cobalt, iron, nickel, and zinc. It can be made into a material with a negative temperature coefficient. (NTC) thermistor. Its resistivity and material constants vary with material composition ratio, sintering atmosphere, sintering temperature and structural state. Now there are also non-oxide NTC thermistor materials represented by si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/26C04B35/622H01C7/04
CPCC04B35/265C04B35/2608C04B35/622H01C7/046C04B2235/3275C04B2235/3263C04B2235/3279C04B2235/3251C04B2235/77
Inventor 王明东戴文金
Owner SHANDONG GREEN TEC MOTOR DRIVEN TECH
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