Patent ID: 9417197
Filing Date: 2016-08-16
CPC Classification: C23C,G01B,G01N

Claim Text:
1. A method of measuring a thickness of a Fe—Zn alloy phase of interest included in the Fe—Zn alloy phase of a galvannealed steel sheet, the method comprising: an X-ray irradiation process of irradiating the galvannealed steel sheet with the incident X-rays; and an X-ray detection process of detecting the diffracted X-rays, which are obtained in the X-ray irradiation process, derived from a Γ·Γ wherein, in the X-ray detection process, a value obtained by subtracting a background intensity from an intensity of the diffracted X-ray with the crystal lattice spacing d corresponding to 1.507 Å, 1.536 Å, 1.623 Å, 1.720 Å, 1.833 Å, 1.899 Å, 1.914 Å, 1.971 Å, 2.363 Å, 2.593 Å, 2.770 Å, 3.692 Å, 4.109 Å, 5.535 Å, or 6.351 Å is used to measure the thickness of the Fe—Zn alloy phase of interest.