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一、前言众所周知,NiCr—NiAl热偶的热电势在核辐照场中的稳定性比较好。因此,在温度为0℃—1200℃的范围内的辐照场中,几乎都使用NiCr—NiAl热电偶测量温度。但是,在我国,考虑到NiAl偶极的某些缺点,如抗氧化性差,不均匀性较大,电势控制较难等,因此它在非辐照环境中已被NiSi偶极取代。但是,由于对NiCr—NiSi的耐辐照性能不明,使得在核辐照场中,人们还不敢用NiSi取代NiAl。这样就造成某些使用单
First, the preamble As we all know, NiCr-NiAl thermocouple thermoelectric potential in the nuclear radiation field stability is better. Therefore, almost all of the temperatures in the irradiation field in the range of 0 ° C to 1200 ° C are measured using a NiCr-NiAl thermocouple. However, in our country, NiAl dipole has been replaced by NiSi dipole in non-irradiated environment, considering some disadvantages of NiAl dipole, such as poor oxidation resistance, large inhomogeneity and potential control. However, due to the unknown of the irradiation resistance of NiCr-NiSi, it is hard to substitute NiSi for NiAl in the nuclear irradiation field. This creates some usage orders