【摘要】 采用全浸腐蚀、腐蚀失重测量、电偶电位和电偶腐蚀电流等试验研究方法 ,将T30 0 / 5 2 2 2、T30 0 / 5 4 0 5和T30 0 /QY8911三种碳纤维复合材料与LY12CZ、7B0 4和 2D70三种铝合金相互偶接 ,研究由于电偶腐蚀的存在 ,对铝合金及复合材料腐蚀行为的影响 ,用SEM方法观察其腐蚀形貌 .结果表明 ,碳纤维复合材料与铝合金的电偶腐蚀作用 ,促进了铝合金表面点蚀的形成与扩展 ,电偶作用使铝合金腐蚀的溶解速率明显加快 ,而与铝合金偶接的复合材料表面形貌基本无变化 ,复合材料与铝合金之间电偶腐蚀电流较大 ,二者之间电偶腐蚀十分严重 .更多还原

【Abstract】 Immersion corrosion,weight loss,galvanic potential and current measurements were conducted in 3.5% NaCl solution.Three types of carbon fiber reinforced plastic (CFRP) materials,T300/5222、T300/5405 and T300/QY8911 were used,electrically coupled to the aluminum alloys LY12CZ、7B04 and 2D70.In order to evaluate the effect of the galvanic corrosion between CFRP/aluminum alloy couple on the corrosion behavior of CFRP and aluminum alloy,SEM technique was used to study the morphology of the surface corrosion.The results showed that galvanic corrosion promoted the formation and propagation of the pitting corrosion of the LY12CZ aluminum alloy.Corrosion rate of the aluminum alloy was accelerated,but the surface morphology of the CFRP coupled with aluminum alloy did not change greatly.Galvanic current indicated that there was a serious galvanic corrosion at electrically conducting CFRP and aluminum alloy couples.更多还原