Corrosive agent and corrosion method for carbon steel and austenitic stainless steel composite material microscopic structure

• Main Authors: PAN MENGZHONG, ZHOU YONG, SHEN PENG, YANG ZHICHUN
• Format: Patent
• Language: Chinese; English
• Published: 19.06.2018
• Subjects: CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; METALLURGY; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLICMATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASSC23 AND AT LEAST ONEPROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25; NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; PHYSICS; TESTING

The invention provides a corrosive agent and a corrosion method for a carbon steel and austenitic stainless steel composite material microscopic structure. According to the corrosive agent and the corrosion method, the safety is achieved, the operability is good, the erosion effect is good, the corroded sample tissue is good in display effect, the pollution is little, and the corrosion reaction isstable. The method comprises the steps that firstly, a first corrosive agent or a second corrosive agent is prepared, wherein the content of all components of the first corrosive agent comprises 0.1-0.2g of copper sulfate, 5-25 ml of nitric acid, 5-20 ml of absolute ethyl alcohol and 150-200 ml of deionized water, and the content of all components of the second corrosive agent comprises 0.2-0.5gof copper sulfate, 5-25ml of hydrochloric acid, 5-15 ml of hydrogen peroxide and 150-200 ml of deionized water; the sample is prepared into a sample to be tested; the sample to be tested is fully immersed in the first corrosiv