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X光衍射无标定量相分析方法较多不同试样组成的联立方程组对同一相求出的K值也不同。有时其相对误差近一倍。 若用全部被测试样g去回归求解全部被测相n个公用K值(g>n),即数学上对方差和求极小,可使总误差降至最低。此法用于高温合金MC、M_6C和μ相定量分析得到较理想结果。 一、原理 最近文献提出一种新方法。即待测样品中有一个或几个相的含量可用其它方法测出(例如化学或电化学法等),然后按如下公式解方程求出其它相含量。
X-ray diffraction uncalibrated phase analysis method more simultaneous equations composed of different samples of the same phase calculated K value is also different. Sometimes its relative error nearly doubled. If all the tested samples g are used to go back and solve all n common K values (g> n) of the measured phase, that is to say, to minimize the variance and find the minimum in mathematics, the total error can be minimized. This method is used for superalloy MC, M_6C and μ phase quantitative analysis to get better results. First, the principle Recent literature proposes a new method. That is, the content of one or more phases in the sample to be measured can be measured by other methods (for example, chemical or electrochemical methods, etc.), and then the other phase content can be obtained by solving the equation as follows.