Determination of Unit Cell Parameters of α-Alumina Reference Material

• Published in: Light Metals 2023 pp. 213 - 218
• Main Authors: Zhao, Lin, Che, Hongsheng, Li, Bo, Zhang, Shuchao
• Format: Book Chapter
• Language: English
• Published: Switzerland Springer 2023; Springer Nature Switzerland
• Series: The Minerals, Metals & Materials Series
• Subjects: Cell parameters; Detection method; Reference material; X-ray diffraction; α-Al
• ISBN: 3031225317; 9783031225314
• ISSN: 2367-1181; 2367-1696
• DOI: 10.1007/978-3-031-22532-1_28

This paper briefly introduces a reference materialReference material for the determination of α-phase in aluminaAlumina powders (aluminumAluminium oxide) with X-ray diffractionX-ray diffraction methods, and focuses on the measurementMeasurement and characterizationCharacterization of the crystal cell parametersCell parameters. The α-phase aluminaAlumina powder reference materialReference material was made of boehmiteBoehmite as a precursor through high-temperature calcination, screening and homogenizationHomogenization, and it had no preferred orientation in the detection, and its diffraction peak intensity was high and stable, which was a challengeChallenges with other precursor materials. According to the requirements of GB/T 15,000 “Directives for the Work of Reference MaterialsReference material”, the statistical method was adopted by 8 testing institutions to complete the determination of the crystal cell parametersCell parameters. After evaluation and statistical analysis, the crystal cell parametersCell parameters of the aluminaAluminareference materialReference material were determined to be: a = 0.47592 ± 0.00002 nm, c = 1.29921 ± 0.00008 nm, which met the Joint Committee on Powder Diffraction Standards (JCPDS) standard card 00–043-1484.