DEVELOPMENT OF FIXED POINTS ABOVE 2700 K BASED ON M-C AND MC-C EUTECTICS AT VNIIOFI FOR RADIATION THERMOMETRY AND RADIOMETRY

摘要

Re-C, TiC-C, ZrC-C and HfC-C fixed-point blackbodies have been developed and investigated. Two types of crucibles were used: with 4 and 10 mm radiating cavities. Transition temperatures were measured according to ITS with a radiance-mode pyrometer. The freezing temperatures were 2747.9+-1.3 K, 3033.6+-1.6 K, 3155.0+-1.8 K and 3458.5+-2.5 K (k(velence)2) for Re-C, TiC-C, ZrC-C and HfC-C respectively.