Corrosive agent and corrosion method and application thereof

The invention provides a corrosive agent as well as a corrosion method and application thereof. The corrosive agent comprises sulfate hydrate and a solvent, the mass volume ratio of the sulfate hydrate to the solvent is (0.125-0.2): 1g/mL. The corrosion method comprises the following steps: (1) mixing a sulfate hydrate and a solvent, and heating to obtain a corrosive liquid; and (2) immersing a sample into the corrosive liquid, standing, taking out the sample, and grinding to obtain a sample to be observed. The corrosive does not use non-explosive hazardous chemicals and highly corrosive hazardous chemicals, is low in cost, convenient to prepare, safe and reliable, and has the advantages of short corrosion time, excellent corrosion effect and the like. 本发明提供了一种腐蚀剂及其腐蚀方法与用途，所述腐蚀剂包括硫酸盐水合物和溶剂；所述硫酸盐水合物与溶剂的质量体积比为(0.125-0.2):1g/mL。所述腐蚀方法包括以下步骤：(1)将硫酸盐水合物和溶剂混合并进行加热，得到腐蚀液；(2)将样品浸入腐蚀液中并进行静置，取出样品后进行研磨，得到待观察的样品。本发明所述腐蚀剂不使用非易爆危化品和强腐蚀类危化品，成本低廉、配置方便、安全可靠，且具有腐蚀时间短、腐蚀效果优良等优点。