论文部分内容阅读
为了研究XRD方法测试炭材料微结构参数时测试样品状态的影响,以沥青炭为分析对象,研究了测试样品为块状样品、常规粉末样品、微量粉末样品时的XRD谱图,并分析了以此获得的炭材料微结构参数。研究表明,块状样品测试时XRD谱峰的偏移最大,获得的炭材料的微结构参数偏离真实值最远;而微量粉末测试样品获得的XRD谱峰的偏移最小,获得的炭材料微结构参数最接近真实值。分析认为,测试过程中探测的深度越大越容易造成结果的偏差,而增加分析仪的圆周半径和减小粉末样品槽的直径与深度对获取真实的炭材料微结构参数有利。
In order to study the effect of XRD method on the state of test samples when testing the microstructure parameters of carbon materials, XRD patterns of bulk samples, conventional powders and trace powders were studied by using asphaltic charcoal. This obtained carbon material microstructure parameters. The results show that the peak shift of XRD peaks is the largest when the bulk sample is tested, and the microstructure parameters of the obtained carbon material are the farthest away from the real value. However, the peak of XRD peak obtained by the micro-powder test sample is the smallest. Structural parameters closest to the true value. The analysis shows that the larger the depth of the probe is, the more likely it will be to deviate the result, while increasing the radius of the analyzer and reducing the diameter and depth of the powder sample cell will be helpful for obtaining the real microstructure parameters of carbon materials.