METHOD FOR PRODUCING HIGH-TEMPERATURE CERAMIC THERMOELECTRIC CONVERTERS FOR HIGH-TEMPERATURE THERMOMETRY FROM NITRIDES OF ELEMENTS OF TITANIUM AND VANADIUM SUBGROUPS USING METHOD FOR OXIDATIVE ENGINEERING Russian patent published in 2021 - IPC G01K7/02 C01B21/76 

FIELD: thermometry.

SUBSTANCE: invention relates to thermometry and can be used for the manufacture of high-temperature thermocouples from electrically conductive ceramics based on metal nitrides of the titanium and vanadium subgroup (Ti, Zr, Hf, V, Ta, Nb) by direct nitridation to determine high temperatures up to 3000°C. The proposed method, using the approach of oxidative design, makes it possible to obtain a ceramic monolithic thermoelectric converter from nitrides of the corresponding metals in all possible combinations. Metal pairs of foils/wires were pre-bonded using argon, diffusion, laser or other welding and given a predetermined shape of the resulting product. Further, the workpiece of soldered metals was converted to nitrides by heating in nitrogen (ultrahigh purity, 99.999%) in the temperature range 1500-2500°C for a time sufficient to complete the nitridation process and obtain a monolithic ceramic product.

EFFECT: production of ceramic thermoelectric converters by a combination of pairs of metal nitrides of the titanium and vanadium subgroups, the determination of their thermoelectrical coefficient in the temperature range from -196.15 to 970°C.

1 cl, 5 dwg, 1 tbl