The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 26, 2022
Filed:
Jul. 27, 2020
Applicant:
Bruker Axs, Llc, Madison, WI (US);
Inventor:
Bob Baoping He, Hercules, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 23/2055 (2018.01); G01N 23/207 (2018.01); G01N 23/20025 (2018.01);
U.S. Cl.
CPC ...
G01N 23/2055 (2013.01); G01N 23/207 (2013.01); G01N 23/20025 (2013.01); G01N 2223/0566 (2013.01); G01N 2223/1016 (2013.01); G01N 2223/331 (2013.01); G01N 2223/62 (2013.01); G01N 2223/641 (2013.01);
Abstract
An X-ray diffraction method measures crystallite size distribution in a polycrystalline sample using an X-ray diffractometer with a two-dimensional detector. The diffraction pattern collected contains several spotty diffraction rings. The spottiness of the diffraction rings is related to the size, size distribution and orientation distribution of the crystallites as well as the diffractometer condition. The invention allows obtaining of the diffraction intensities of all measured crystallites at perfect Bragg condition so that the crystallite size distribution can be measured based on the 2D diffraction patterns.