软磁铁氧体用氧化铁中主量及微量元素测定

Determination of the Main Components and Minor Element in Iron (Ⅲ) Oxide for Ferrite

采用粉末压片,对软磁铁氧体用氧化铁粉中Fe_2O_3、CaO、SiO_2、Al_2O_3、MnO、Cl、SO_4元素进行X射线荧光光谱测定。研究了制样方法;光谱条件等。杂质元素SiO_2、Al_2O_3、SO_4和Cl分别以铑靶的RhKαc线和RhLα线作内标,局部补偿样品结构,仪器漂移和基体等因素造成的影响,所得结果满足生产需要。

A pressed powder pellets method has been developed by XRFA for the determination of Fe2O3 ,CaO,SiO2 ,Al2O3 ,MnO, Cl, SO4 elements in iron( III) oxide powder used for soft ferrite. A series of sampling methods and spectrum conditions are studied. In order to compensate sample structure, spectrometry condition and the matrix effects, Rhkαc scatter line and RhLα line as internal standard are used for impurity elements such as SiO2, Al2O3, SO4, and Cl.