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摘要
The effect of hydroxyapatite(HA)samples in different quality states on X-ray diffraction(XRD)results has been investigated systematically. The effects of sample state(block, layered and powder, etc.), experimental method selection(powder polycrystalline diffraction and thin film grazing incidence diffraction, etc.)and detection environmental conditions(temperature, humidity and X-ray irradiation)on XRD detection are investigated. The results show that, compared with the block sample of HA, the intensity of the characteristic XRD peak of the powder sample after grinding and sieving treatment is significantly enhanced. For HA multi-layered growth samples, the phase analysis of each layer can be accurately achieved by combining grazing incidence and conventional powder diffraction. The particle size, amount, and filling method of the HA powder sample can also affect the XRD detection. The results show that the characteristic peak intensity of the HA powder sample with a particle size of 37 μm is about twice that of the sample with a particle size of 137 μm. In addition, the vacant sample preparation in the middle of a small amount of samples can cause the peak position of the characteristic peak to shift from 31. 8 to 31. 4(°), and the peak intensity decreases from 11213. 68 to 601. 65. Moreover, appropriate storage and detection methods can prevent and avoid erroneous detection and result analysis for samples with poor stability to ambient temperature and humidity. Thus, ensuring high-quality XRD detection data and ensuring experimental data quality requires comprehensive quality control. ? The Author(s) 2023.
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