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Metal oxide sintered body for thermistor and thermistor element

A technology of thermistor elements and thermistors, which is applied in thermistors, resistance manufacturing, electrical components, etc., can solve problems such as unusability and resistance reduction, achieve sufficient measurement accuracy, reduce resistance changes, and reduce oxygen ingress and the effect on the likelihood of leaving

Inactive Publication Date: 2015-06-10
MITSUBISHI MATERIALS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above-mentioned existing materials show a considerable decrease in resistance in a high-temperature retention test, which leads to a problem that such existing materials cannot be used depending on the application

Method used

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  • Metal oxide sintered body for thermistor and thermistor element
  • Metal oxide sintered body for thermistor and thermistor element
  • Metal oxide sintered body for thermistor and thermistor element

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preparation example Construction

[0060] In addition, there are the following differences between the third embodiment and the second embodiment. The method for preparing the above-mentioned metal oxide sintered body 2 for the thermistor according to the third embodiment includes the following steps: 2 o 3 Cr 2 o 3 and MnO 2 The obtained mixture powder is calcined to obtain the above general formula (1-y)·La(Cr 1－x mn x )O 3 +y·Mn 2 CrO 4 A mixed sintered body represented by (x=0.0-0.6, y=0.05-0.95).

[0061] That is, first of all, in La 2 o 3 Excessive addition of Cr in the state of deficiency 2 o 3 and MnO 2 To minimize unreacted La 2 o 3 The amount, and use the residual Cr 2 o 3 and MnO 2 Synthetic Mn 2 CrO 4 , thus forming a La(Cr,Mn)O containing 3 and Mn 2 CrO 4 Mixed sintered body as its main component. For example, obtain x=0.5, y=0.1 as in the above-mentioned general formula, namely 0.9La(Cr 0.5 mn 0.5 )O 3 +0.1Mn 2 CrO 4 Calcined powder shown.

[0062] Subsequently, the a...

Embodiment

[0067] Below, refer to image 3 with Figure 4, to the evaluation result of the preparation method of metal oxide sintered body for thermistor, thermistor element, temperature sensor for thermistor and metal oxide sintered body for thermistor (by carrying out the embodiment of actual manufacture) that the present invention relates to To obtain by evaluation) for specific instructions

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Abstract

A metal oxide sintered compact used for a thermistor includes a composite oxide represented by the general expression La(Cr 1-x Mn x )O 3 (with x = 0.0 to 0.6). Furthermore, the thermistor element 3 includes the metal oxide sintered compact 2 for a thermistor and a pair of leads 1, one terminal of each of which is fixed to the metal oxide sintered compact 2 for a thermistor.

Description

[0001] Case Description [0002] The application date is July 31, 2008, the application number is 200880101012.6, and the title is "metal oxide sintered body for thermistor, thermistor element, temperature sensor for thermistor and sintered metal oxide for thermistor A divisional application of the invention patent application for the preparation method of body. technical field [0003] The present invention relates to a method for producing a metal oxide sintered body for a thermistor, a thermistor element, a temperature sensor for a thermistor, and a metal oxide sintered body for a thermistor, which are used for temperature measurement of automobiles, for example. [0004] This application claims priority from Japanese Patent Application No. 2007-202850 filed in Japan on Aug. 3, 2007, the disclosure of which is incorporated herein by reference. Background technique [0005] Generally, a thermistor temperature sensor is used as a temperature sensor for measuring a catalyst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01C7/04
CPCC04B35/016C04B35/42C04B2235/3225C04B2235/3227C04B2235/3241C04B2235/3267C04B2235/80H01C7/008H01C7/043H01C17/06533
Inventor 藤原和崇藤田利晃
Owner MITSUBISHI MATERIALS CORP