Etchant

What Is an Etchant? Etching Mechanisms for Revealing Metallographic Microstructures, Selection Methods, and Applications of Related Wet-Etching Reagents

In metallographic analysis, a sample usually needs to undergo cutting, mounting, grinding, and polishing to obtain a flat observation surface with minimal scratches. After polishing, the metal surface may appear bright and mirror-like, but this does not mean that grains, grain boundaries, phase ...