What Is Purpose Of Etching?

What Is Purpose Of Etching? Etching Is a Chemical or Electrolytic Process Used after Metallographic Grinding and Polishing Procedures. Etching Enhances the Contrast on Surfaces in Order to Visualize the Microstructure or Macrostructure. What is etching of a material? Etching involves the selective removal of material from a sample by chemical or physical means. It