双相化处理对09CuPCrNi耐候钢腐蚀性能的影响  

Effect of Dual-Phase Treatment on Corrosion Property of Weathering Steel 09CuPCrNi

作　　者：张春玲[1] 蔡大勇[1] 廖波[1] 樊云昌[2] 

机构地区：[1]燕山大学亚稳材料制备技术与科学重点实验室,河北秦皇岛066004 [2]石家庄铁道学院材料系,河北石家庄050043

出　　处：《钢铁》2008年第12期79-82,共4页Iron and Steel

基　　金：河北省自然科学基金-钢铁联合研究基金资助项目(E2008000843)

摘　　要：通过亚温淬火法制备了09CuPCrNi双相钢,采用中性盐雾试验、极化曲线的测定,研究了双相化处理对耐候钢耐腐蚀性能的影响。780℃亚温淬火的09CuPCrNi双相钢在5%的NaOH、H2SO4、HCl水溶液以及3.5%的NaCl水溶液中的腐蚀行为与09CuPCrNi耐候钢相似,自腐蚀电流密度分别比09CuPCrNi耐候钢降低了17.0%、18.2%、31.2%和17.8%。在腐蚀周期分别为48 h和120 h的盐雾试验中,双相钢的腐蚀速率分别比09CuPCrNi耐候钢降低了7.9%-22.2%和2.3%-13.0%。Dual-phase steel 09CuPCrNi was prepared through inter-critical quenching process. The influence of dualphase treatment on corrosion resistant property of the steel was studied by electrochemical potentiodynamic test and salt spray test. The results indicate that the corrosion behavior of the dual-phase weathering steel quenched at 780 ℃ and original weathering steel in 5 % NaOH, 5% HCI, 5 % H2SO4 and 3.5 % NaCl aqueous solutions was identical, but the dual-phase steel showed lower corrosion current. In salt spray test, the corrosion rates （mm/a） of dualphase steels were lower by 7.9-22.2% （48 h） and 2.3%-13.0% （120 h）.

关 键 词：双相钢 电化学动电位试验 腐蚀性能 盐雾试验 

分 类 号：TG142.7[一般工业技术—材料科学与工程]