SYMPOSIA PAPER Published: 01 January 1974
STP33331S

The Electron Microprobe as a Metallographic Tool

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The electron microprobe (EMP) is an electron optical instrument in which compositional and topographic information are obtained from regions ⩽1μm in diameter on a specimen. Photographs of compositional and topographic changes in 1-mm2to 20-μm2 areas on various types of specimens can also be obtained which are strikingly similar to optical photomicrographs. This paper discusses the various signals that are measured in the EMP (X-rays, secondary electrons, backscattered electrons, etc.), their resolution, and the types of information that can be obtained. In addition to elemental analysis, the solid state detector and scanning techniques will be discussed. The last sections will cover characterization of phases-homogeneity-trace element analysis-quantitative metallography and various techniques which extend the instrument capabilities such as deconvolution and soft X-ray analysis. Various applications will be discussed and illustrated.

Author Information

Goldstein, JI
Lehigh University, Bethlehem, Pa.
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Developed by Committee: E04
Pages: 86–136
DOI: 10.1520/STP33331S
ISBN-EB: 978-0-8031-4643-3
ISBN-13: 978-0-8031-0510-2