Metallographic structure corrosive agent for GH3128 high-temperature alloy welding seam and corrosion method

• Main Authors: WANG SHUAI, GU XIAOCHUN, YIN XIYUE
• Format: Patent
• Language: Chinese; English
• Published: 16.04.2021
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention discloses a metallographic structure corrosive agent for a GH3128 high-temperature alloy welding seam and a corrosion method, which belong to the technical field of metallographic analysis of metal materials, and solve the problem that the existing corrosive agent and corrosion method cannot clearly display the metallographic structure of the GH3128 high-temperature alloy welding seam. The metallographic structure corrosive agent comprises concentrated nitric acid, concentrated hydrochloric acid, hydrogen peroxide and water. The volume ratio of the concentrated nitric acid to the concentrated hydrochloric acid to the hydrogen peroxide to the water is (5-20): (10-20): (10-15): (20-30). The corrosive agent and the corrosion method can rapidly and clearly corrode a GH3128 high-temperature alloy welding seam, a welding seam boundary and a metallographic structure of a matrix, and are easy to operate and non-toxic. 本发明公开了一种GH3128高温合金焊缝金相组织腐蚀剂及腐蚀方法，属于金属材料金相分析技术领域，解决了现有的腐蚀剂及腐蚀方法不能清晰地显示GH3128高温合金焊缝的金相组织