UTILIZATION OF MASER AS A MEANS OF EXCITATION FOR THE SPECTROGRAPHIC EXAMINATION OF MICROSTRUCTURES OF METALS.
NAVAL AIR ENGINEERING CENTER PHILADELPHIA PA AERONAUTICAL MATERIALS LAB
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Investigation of laser as a source of excitation for emission spectroscopy and techniques developed for its use in this capacity are reported. Results of qualitative detection of segregates and inclusions in metallic alloys and the limits of detection of various elements in aluminum standards by the techniques developed are presented in addition to investigations of this means of excitation for the analysis of ceramics and refractories. It is concluded that the results of investigation show the feasibility of the use of the Laser Microprobe as a means of excitation for emission spectrography. The techniques developed in the analysis of coatings and modifications of the objective lens have increased the versatility and scope of application. Although the laser microprobe offers many advantages over the arc-spark spectrographic source, it nevertheless possesses certain limitations which require that it be considered as a complementary accessory to extend the applications of emission spectroscopy. Author
- Properties of Metals and Alloys
- Test Facilities, Equipment and Methods