Determination of AISI 4340 and 8640 Steels Used in M9 Beretta Pistol Slides by Emission Spectroscopy and X-Ray Fluorescence Spectroscopy

摘要

Emission spectroscopy and x-ray fluorescence spectroscopy are investigated as chemical analysis techniques for AISI 4340 and 8640 low alloy steels. These steels are used in M9 Beretta pistol slides and were provided by that source. Tellurium, selenium, and calcium are specifically investigated in these types of materials. Emission spectroscopy was demonstrated as a viable offline nondestructive technique for the analysis of Te, Se, Ca, and twenty other elements in these pistol slide materials with regard to precisions and detection limits using certified standard reference materials (SRM's). The disadvantages of the technique are its offline sampling and its ten minute sampling time. This experiment was conducted at Benet. X-ray fluorescence spectroscopy was also demonstrated using these materials as a viable online nondestructive technique for the analysis of Te, Se, and Ca using low alloy steel standard reference materials. Concentration ranges were similar to those used in these pistol slides. Precisions, detection limits and acceptable sampling time were also considered. This original experiment was conducted at Tracor's main applications lab in Ft. Collins, Co. This original x-ray fluorescence experiment was followed by similar but more extensive experiments at Tracor and Benet These latter experiments verify results reported here and used the same set of standard reference materials. As a result of this initial experiment and similar follow-up experiments, the U.S. Army is in the process of adopting online energy dispersive x-ray fluorescence analysis to identify tellurium, selenium, and calcium in these types of materials.