Experimental techniques – metallography (light microscopy)
{"Image DocumentName": "Experimental techniques \u2013 metallography (light microscopy)", "Image ImageDescription": "Sample preparation. Standard grinding using series of grinding papers. Abrasives of finer papers (starting from 800 mesh) tend to dig into the material. This can be avoided by short etching by weak Kroll\u2018s etchant after each grinding/polishing step. Alumina is preferred to diamond pastes for polishing. Polishing should be done down to 0.05 \u03bcm fineness. Hydrogen peroxide and/or very weak solution of hydrofluoric acid can be added during polishing. Grinding and polishing is generally much more complicated for \u03b2-Ti alloys (especially when in \u03b2 solution treated condition) Etching. Kroll\u2018s etchant is used to image different phases (i.e. \u03b1 and \u03b2 \u2013 typically to show microstructure of Ti6Al4V alloy) Oxalic acid shall be used to show grains (e.g. in pure Ti or solution treated \u03b2 alloys)", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}