微探头电位扫描快速评定黄铜焊接接头腐蚀行为

• 作 者: 殷正安 梁成浩
• 出 处: 大连工学院学报
• 发表日期: 1986年02期
• 关键词: 焊接接头 焊缝区 焊缝金属 热影响区 局部腐蚀 晶间腐蚀 耐蚀性 稳定电位 电位值 选择性腐蚀

局部腐蚀是海洋用黄铜设备主要失效形式之一。而对局部腐蚀(包括晶间腐蚀、应力腐蚀及电偶腐蚀等)抗力最薄弱之处则是焊缝区,其中尤以焊接接头热影响区为最甚。近年来许多报道表明,不少局部腐蚀就是从热影响区发生或发展的。目前常规的模拟试验方法,仅仅反映单纯母材和单纯焊缝

Local corrosion is one of the major forms of failure of marine brass equipment. The most resistance to local corrosion (including intergranular corrosion, stress corrosion and galvanic corrosion, etc.) is the weld zone, especially in welded joint heat affected zone is the worst. Many reports in recent years show that a lot of localized corrosion occurs or develops from the heat-affected zone. At present, the conventional simulation test method only reflects purely base metal and simple weld