Non-contact temperature determination of embedded magnetic phases of hard coatings by exploitation of the magnetic hysteresis

作者：Thede Claas; Chemnitz Steffen; Teliban Iulian; Bechtold Christoph; Klever Christian; Stueber Michael; Quandt Eckhard^*

来源：Sensors and Actuators A: Physical , 2012, 178: 104-109.

DOI：10.1016/j.sna.2012.01.027

• Electromagnetic analysis
• Frequency mixing
• Inverse magnetostriction
• Temperature measurement

A non-contact temperature sensor is described which is based on the temperature dependency of the hysteresis of a magnetic phase embedded in a non-magnetic hard coating. For the measurement principle the technique of frequency mixing is used, with extension toward phase sensitivity as indicator for the temperature. The sensor%26apos;s capabilities such as selectivity and sensitivity are investigated on TiN-FeCo magnetic multilayers. The sensor has been proven for temperatures up to 500 degrees C and shows capabilities for higher temperatures.

• 出版日期2012-5