The present report describes observations and analyses in a survey study of erosion damage in chromium plated gun bore surfaces. Sections of three fired chromiu

The present report is a reply to J. H. Underwood's critique of the ARDEC Technical Report entitled "Gray Layers and the Erosion of Chromium Plated Gun Bore Surf

Specimens containing white layers were taken from the bore surface of the unplated and chrome plated fired gun tubes. These were examined metallographically and