钛钢复合板在模拟海水中的表面耐蚀性能研究

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作者:: 南京市锅炉压力容器检验研究院，江苏南京 210019
Nanjing Boiler and Pressure Vessel Inspection Institute，Nanjing 210019，China

作者单位:: 钛钢复合板；爆炸焊接；增材制造；腐蚀电流密度；腐蚀速率
titanium steel clad plate；explosive welding；additive manufacturing；corrosion current density；corrosion rate

关键词:: 钛钢复合板；爆炸焊接；增材制造；腐蚀电流密度；腐蚀速率
titanium steel clad plate；explosive welding；additive manufacturing；corrosion current density；corrosion rate

摘要:: 摘要：采用极化曲线和交流阻抗测试方法，对比分析了爆炸钛钢复合板、增材制造钛钢复合板

和去应力增材制造钛钢复合板在模拟海水的3.5% NaCl溶液中的表面耐蚀性能。研究结果表

明，钛钢复合板表面钛覆层在3.5%的NaCl溶液中会发生电化学腐蚀，在电化学腐蚀过程中钛

覆层表面生成 1层稳定的氧化膜，提高其耐蚀性；增材制造复合板和去应力增材制造复合板

的腐蚀电流密度和腐蚀速率均低于爆炸复合板，耐蚀性能更优；去应力退火能消除复合板内

应力，提高增材制造复合板的耐蚀性能。

Abstract: The surface corrosion resistance of different titanium steel clad plates in simulated seawater solution of 3.5% NaCl were

compared and analyzed by polarization curve and alternating-current impedance methods. Results show that titanium layer of the

clad plate is electrochemically corroded in 3.5% NaCl solution. A stable oxide film, which will improve the corrosion resistance, is

formed on the surface of titanium layer during the electrochemical corrosion process; Both corrosion current density and corrosion

rate of additive manufacturing clad plate are lower than those of explosive clad plate, implying better corrosion resistance; Corrosion

resistance of the additive manufacturing clad plate can be enhanced by stress relieving annealing to eliminate internal stress.