COMPOSITION FOR SENSOR ELEMENT, TEMPERATURE SENSOR AND METHOD FOR MANUFACTURING TEMPERATURE SENSOR

• US 20130308683A1
• Filed: 12/14/2012
• Published: 11/21/2013
• Est. Priority Date: 05/18/2012
• Status: Active Grant

• Current Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Original Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Inventors: Ko, Na-Yun, Lee, Tae Seung, Park, Jin-Seong, Lee, Woon-Young
• Granted Patent: US 9,243,962 B2
• Time in Patent Office: Days
• US Class Current: 374/185
• CPC Class Codes: G01K 7/16 using resistive elements resistive elements per se H01C, H01L
• CPC Class Codes: G01K 7/18 the element being a linear resistance, e.g. platinum resistance thermometer G01K7/26 takes precedence
• CPC Class Codes: H01C 17/06533 composed of oxides
• CPC Class Codes: H01C 17/06546 Oxides of zinc or cadmium
• CPC Class Codes: H01C 17/20 by pyrolytic processes
• CPC Class Codes: H01C 7/06 including means to minimise changes in resistance with changes in temperature

Abstract

Disclosed herein is a composition of a sensor element, a temperature sensor having the composition of the sensor element and a method of manufacturing the temperature sensor. The sensor element composition comprising Y₂O₃, Al₂O₃, MnO₂, NiO and Fe₂O₃, and further comprising ZrO₂ and a temperature sensor comprising the same. The method comprising: weighing the composition for a sensor element; mixing the composition; calcining the mixture at about 1000° C.—1400° C. for 30 min—5 hrs; pulverizing the calcined mixture to obtain powder; disposing the powder type mixture into a mold; inserting in parallel a plurality of lead wires into the powder type mixture; pressure molding the powder type mixture; and sintering the pressure molded material at about 1300° C.—1500° C. for 30 min—5 hrs.

Claims

1. A composition for a sensor element comprising Y₂O₃, Al₂O₃, MnO₂, NiO and Fe₂O₃, and further comprising ZrO₂, configured to be used in a temperature sensor

2. The composition according to claim 1, wherein a molar concentration of Zr used in the composition for the sensor element is about 0.2˜

0.5.

3. The composition according to claim 1, wherein a molar concentration of the metallic elements, Yttrium, Aluminum, Manganese, Nickel and Iron, used in the composition for the sensor element is about 0.2˜

0.5, 0.01˜

0.1, 0.1˜

0.3, 0.1˜

0.3 and 0.03˜

0.1, respectively.

4. A temperature sensor comprising:

a sensor element including a composition for a sensor element of Y₂O₃, Al₂O₃, MnO₂, NiO, Fe₂O₃, and ZrO₂; and

a plurality of lead wires, inserted in parallel into the sensor element.

5. A method for manufacturing a temperature sensor comprising:

weighing a composition, Y₂O₃, Al₂O₃, MnO₂, NiO, Fe₂O₃, and ZrO₂, for a sensor element;

mixing the composition;

calcining the mixture at about 1000°

C.˜

1400°

C. for 30 min˜

5 hrs;

pulverizing the calcined mixture to obtain powder;

disposing the powder type mixture into a mold;

inserting in parallel a plurality of lead wires into the powder type mixture;

pressure molding the powder type mixture; and

sintering the pressure molded material at about 1300°

C.˜

1500°

C. for 30 min˜

5 hrs.

6. The method for manufacturing a temperature sensor according to claim 5, wherein the calcination is conducted at 1200°

C. for 2 hrs.

7. The method for manufacturing a temperature sensor according to claim 5, wherein the sintering is conducted at 1400°

C. for 1 hr.