PHOTOEMISSION METHOD OF TEMPERATURE MEASURING IN THE PROCESS OF SPARK PLASMA SINTERING POWDERS OF REFRACTORY METALS

Construction and algorithm of the photoemission pyrometer based on a photomultiplier are outlined; the calibration procedure is set out. The application of the photoemission method in a rapidly changing temperature is showed. It is proved that during spark plasma sintering the maximal temperature is...

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Bibliographic Details
Published inPribory i metody izmererij no. 1; pp. 92 - 98
Main Authors D. V. Minko, O. O. Kuznechik
Format Journal Article
LanguageEnglish
Published Belarusian National Technical University 01.04.2015
Subjects
photoemission pyrometer, spark plasma sintering, calibration
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Summary:Construction and algorithm of the photoemission pyrometer based on a photomultiplier are outlined; the calibration procedure is set out. The application of the photoemission method in a rapidly changing temperature is showed. It is proved that during spark plasma sintering the maximal temperature is 5500– 7500 °C, while the speed of temperature increase to its maximum ~108–109 °C/s, and the rate of decrease to 2000–4000 °C may be 106–107 °C/sec. It is recommended to use photoemission method when developing technological conditions, adjustment and control of technological processes using modern high-energy equipment (plasma, laser, cathode-ray tube) to produce new materials, coatings and products for mechanical engineering, electronic industry and medicine.
ISSN:2220-9506
2414-0473