SURFACE HARDNESS EVALUATION METHOD USING X-RAY DIFFRACTOMETER, AND X-RAY DIFFRACTION MEASURING APPARATUS

摘要

PROBLEM TO BE SOLVED: To determine surface hardness of a measuring object accurately by one-time formation of an X-ray diffraction image.SOLUTION: An X-ray is emitted toward a measuring object OB, and a diffraction ring is imaged by generated diffraction light of the X-ray. An intensity distribution of a diffraction X-ray of the imaged diffraction ring is detected, and a diffraction ring width which is a width based on the intensity distribution in the radial direction of the diffraction ring is calculated at a plurality of spots thereof and averaged. A surface hardness of the measuring object OB is calculated by using the obtained average value, and a relation between the diffraction ring width and the surface hardness which is obtained beforehand.SELECTED DRAWING: Figure 1