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预处理对碳钢大气腐蚀的影响

Keywords: 大气腐蚀,腐蚀增重,污染物

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Abstract:

?通过检测具有不同初期腐蚀产物的a3钢、16mn钢和20#钢挂片在大气腐蚀曝晒站进行曝晒后的增重,研究表面初期污染与初始腐蚀状态对后期腐蚀动力学的影响.结果表明,在预腐蚀过程中不同污染预处理的碳钢增重速率有少量差别,在曝晒的初期,不同预腐蚀处理对加速腐蚀的作用明显不同,曝晒一定时间后,腐蚀速度与规律趋于一致,三种碳钢的腐蚀随时间的发展均有减缓的趋势,预腐蚀处理对三种碳钢的后期腐蚀性能影响很小.mn对碳钢的腐蚀有一定的减缓作用,而c加速碳钢的腐蚀.

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