Patent ID: 11921061
Assignee: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. An orientation degree distribution analysis method of calculating an orientation degree distribution from a measurement result of X-ray diffraction and crystal structure information of a measurement target using an information processing apparatus including a main storage device and a central processing unit (CPU), the orientation degree distribution analysis method comprising:
a first step of acquiring first information which is the crystal structure information of the measurement target, second information on an intensity ratio of each diffraction peak of the measurement target and a crystal plane corresponding to each diffraction peak of the measurement target by X-ray diffraction measurement, each diffraction peak of the measurement target being obtained from an X-ray diffraction profile of the measurement target obtained by an X-ray diffraction device, third information on a diffraction range and a diffraction sensitivity, and fourth information on an intensity ratio of each diffraction peak of a randomly oriented sample and a crystal plane corresponding to each diffraction peak of the randomly oriented sample, each diffraction peak of the randomly oriented sample being obtained from an X-ray diffraction profile of the randomly oriented sample obtained by an X-ray diffraction profile acquisition unit, and inputting the first information, the second information, the third information, and the fourth information to the main storage device;
a second step of calculating an angle defined by an orientation plane and a crystal plane corresponding to a diffraction peak of interest from the first information, the second information, the third information, and the fourth information;
a third step of calculating an existence ratio of particles with crystal planes oriented in directions corresponding to respective diffraction angles of the randomly oriented sample and storing the existence ratio in the main storage device;
a fourth step of assuming a distribution shape of an orientation degree distribution and setting an orientation degree distribution function; and
a fifth step of calculating the orientation degree distribution based on the first information, the second information, the third information, the fourth information, the angle, the existence ratio, and the orientation degree distribution function.