Reducing-atmosphere-resistant thermistor element, production method thereof and temperature sensor

A method of producing a reducing-atmosphere-resistant thermistor element, consisting of a metal oxide sintered body as a principal component, comprising the steps of:

• mixing and pulverizing raw material powder containing said metal, heat treating the mixture and obtaining a thermistor composition made of an oxide containing said metal;
• mixing and pulverizing said thermistor composition and an oxygen occlusion-release composition having oxygen occlusion-release characteristics to prepare a composite raw material containing said oxygen occlusion-release composition dispersed in said thermistor composition;
• and
• molding said composite raw material into a predetermined shape and baking the resulting molded article;
• wherein said raw material powder is in the form of a powder having a mean particle diameter of not greater than 100 nanometers.

A method of producing a reducing-atmosphere-resistant thermistor element, consisting of a metal oxide sintered body as a principal component, comprising the steps of:

• mixing a precursor compound of said metal oxide into a liquid phase to prepare a precursor solution, heat treating said precursor solution and obtaining a thermistor composition containing said metal oxide;
• mixing and pulverizing said thermistor composition and an oxygen occlusion-release composition having oxygen occlusion-release characteristics to prepare a composite raw material containing said oxygen occlusion-release composition dispersed in said thermistor composition;
• and
• molding said composite raw material into a predetermined shape and baking the resulting molded article.

A method of producing a reducing-atmosphere-resistant thermistor element, consisting of a metal oxide sintered body as a principal component, comprising the steps of:

• mixing a precursor compound of said metal oxide into a liquid phase and preparing a first precursor solution;
• mixing a precursor compound of an oxygen occlusion-release composition having oxygen occlusion-release characteristics into a liquid phase and preparing a second precursor solution;
• mixing said first and second precursor solutions and preparing a mixed precursor solution of said metal oxide and said oxygen occlusion-release composition;
• heat treating said mixed precursor solution and preparing a composite raw material containing said oxygen occlusion-release composition dispersed in said thermistor composition containing said metal oxide;
• and
• molding said composite raw material into a predetermined shape and baking the resulting molded article.

A method of producing a reducing-atmosphere-resistant thermistor element, consisting of a metal oxide sintered body as a principal component, comprising the steps of:

• mixing a precursor compound of said metal oxide into a liquid phase to prepare a precursor solution, mixing an oxygen occlusion-release composition having oxygen occlusion-release characteristics into said precursor solution and preparing a mixed precursor solution containing said oxygen occlusion-release composition dispersed therein;
• heat treating said mixed precursor solution and preparing a composite raw material containing said oxygen occlusion-release composition dispersed in said thermistor composition containing said metal oxide;
• and
• molding said composite raw material into a predetermined shape and baking the resulting molded article.

A method of producing a reducing-atmosphere-resistant thermistor element, consisting of a metal oxide sintered body as a principal component, comprising the steps of:

• obtaining a mixture by mixing and pulverizing raw material powder containing said metal;
• causing said mixture to be impregnated with a precursor solution of an oxygen occlusion-release composition having oxygen occlusion-release characteristics;
• heat treating said mixture impregnated with the precursor solution of said oxygen occlusion-release composition and preparing a composite raw material containing said oxygen occlusion-release composition dispersed in said thermistor composition containing said metal oxide;
• and
• molding said composite material into a predetermined shape and baking the resulting molded article.