The microscopy of metals in transmitted ultra-violet light

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Abstract
It is suggested that transmission ultra-violet light microscopy might provide a useful technique for metallurgical studies of the alkali metals and of silver and silver-based alloys. It is possible that this technique, providing the resolution of detail permissible with good optical microscopy for the examination of fairly thick metallic specimens, will fill the gap between transmission electron microscopy and x-ray diffraction topography for metallographic observation. Of the many potential applications the detection of microstructure by decorating techniques, the study of precipitation and other chemical reactions inside metals and the direct observation of phase changes are listed as those which are likely to be of immediate interest. The paper presents some results of a preliminary investigation of the microstructure in specimens of potassium, using impurity decoration and ultra-violet light microscopy, to demonstrate the experimental feasibility of these proposals.

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