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近年来,为了提高硬质合金刀具的物理机械性能,碳化钛涂层的硬质合金刀片,特别是用气相沉积方法涂层的刀片得到了日益广泛的应用。用这种方法制造的硬质合金工件的耐磨性取决于涂层的厚度,因而,有效地检查这个参数是必要的。文献[2～5]中有关用放射性源~3H/Zr和~(55)Fe的X射线方法测定各种涂层厚度的资料较多,但用X射线管测定厚度能得到最低的检测极限。由于BK6硬质合金刀片是钨钴基的,涂层是碳化钛,其量子的特征能量差异极大,因此,我们试图用X射线荧光方法来测定TiC涂层的厚度。
In recent years, in order to improve the physical and mechanical properties of cemented carbide tools, titanium carbide coated carbide inserts, especially those coated by vapor deposition methods, are increasingly used. The wear resistance of cemented carbide workpieces made in this way depends on the thickness of the coating and therefore it is necessary to check this parameter effectively. The literature [2 ~ 5] on the use of radioactive sources ~ 3H / Zr and ~ (55) Fe X-ray method to determine the thickness of various coatings more information, but the thickness of X-ray tube to obtain the lowest detection limit. Since the BK6 cemented carbide inserts are tungsten-cobalt-based and the coating is titanium carbide, the characteristic energies of the quantum differ greatly, so we tried to determine the thickness of the TiC coating by X-ray fluorescence.