TEMPERATURE ESTIMATION METHOD FOR HIGH-TEMPERATURE MEMBER, METASTABLE TETRAGONAL PHASE CONTENT MEASUREMENT METHOD, AND DEGRADATION DETERMINATION METHOD

摘要

A temperature estimation method includes the steps of measuring a content of a tetragonal-prime phase included in a coating layer formed on a surface of a high temperature member by X-ray diffraction or Rietveld analysis, Raman spectroscopy, or the like; and estimating a surface temperature of the high temperature member based on the estimated content of the tetragonal-prime phase.