姚志燕
,
徐宏
,
侯峰
,
戴玉林
,
闫操
腐蚀学报(英文)
以镀速和耐蚀性能作为判据,通过正交试验获得了较优的三元Ni-W-P合金镀层工艺, 即镀液组成: 硫酸镍30 g/L, 次亚磷酸钠25~30 g/L, 钨酸钠50 g/L, 柠檬酸钠75 g/L, 乳酸15 mL/L, 硫酸铵30 g/L和添加剂20 mg/L; pH值9.0和镀液温度(90±2)℃. 电化学测试结果表明, Ni-W-P镀层的耐蚀性能优于Ni-P镀层. 研究了高温热处理对Ni-W-P合金镀层耐蚀性能的影响并采用扫描电镜(SEM)和X射线衍射仪(XRD)分析镀层形貌和相组成. 结果表明, 高温热处理导致镀层内部及镀层与基体之间发生了元素的互扩散, 并在镀层表面生成致密的氧化膜, 进而提高镀层的耐蚀性能.
关键词:
化学镀Ni-W-P合金
,
heat-treatment
,
polarization curve
,
corrosion resistance
李娜
,
王志平
,
纪朝辉
,
王振良
腐蚀学报(英文)
为了提高铝箔网的耐腐蚀性能, 采用磷酸阳极化方法对铝箔网表面进行处理. 通过对磷酸阳极化后铝箔网的电化学极化腐蚀测试,优化铝箔网磷酸阳极化工艺; 并对铝箔网及铝箔网导电层复合材料的耐环境腐蚀性能进行分析. 结果表明: 磷酸阳极化处理后铝箔网表面生成了一层疏松多孔的阳极氧化膜, 使铝箔网的耐腐蚀性能得到提高;铝箔网/碳纤维层压板(CFRP)复合材料的粘接强度随腐蚀时间的延长而下降, 而磷酸阳极化后铝箔网/碳纤维层压板复合材料的较未处理者有所提高.
关键词:
铝箔网
,
composite
,
phosphoric anodizing
,
corrosion resistance
周贤良
,
朱敏
,
华小珍
,
叶志国
,
崔霞
,
邹爱华
中国腐蚀与防护学报
利用不同冷却方式在SS400热轧带钢表面形成了不同结构的氧化皮,通过腐蚀形貌宏观观察、SEM、EDS、XRD、失重法、干湿周期浸润腐蚀加速实验和电化学方法对不同结构氧化皮的热轧带钢在NaHSO3溶液中腐蚀行为进行了研究。研究表明,不同冷却方式下所制热轧带钢的氧化皮均主要由Fe3O4组成,另含有Fe2O3和Fe。随着冷却速度的减小,氧化皮中Fe3O4的含量增加,但未发现有FeO;随炉冷却所制热轧带钢的氧化皮较厚且均匀,并存在分层现象(外层为Fe2O3,内层为Fe3O4+Fe),在NaHSO3溶液中耐蚀性最好;装罐冷却所制氧化皮较均匀平整,耐蚀性次之;自然空冷所制氧化皮存在着较多的缺陷,耐蚀性最差。
关键词:
冷却方式
,
oxide scale
,
corrosion behavior
,
corrosion resistance
张勇
,
覃作祥
,
许鸿吉
,
常凯
,
陆兴
,
佟维
中国腐蚀与防护学报
T4003 and Q450NQR1, as well as Nirosta 4003 and Q450NQR1 dissimilar metal joints were welded by ER-309 welding wire. The microstructure oftheir base metal and joint were analyzed by metallographic approach. The corrosion resistance of base metal and joints was evaluated by salt fog and electrochemical corrosion tests. The results demonstrated that as far as the similar metal joints of Nirosta 4003 and T4003 was concerned, the corrosion resistance of welding line was much better than that of base metal. However, the corrosion resistance of heat affected zone (HAZ) became worse. In the case of dissimilar metal joints of Nirosta 4003 and Q450NQR1, as well as T4003 and Q450NQR1, the corrosion resistance of welding line was reduced. Under salt spray condition, the corrosion resistance of welding line and base metal of similar metal joints was comparative. However, the dissimilar metal joints of Nirosta 4003 and Q450NQR1, as well as T4003 and Q450NQR1 exhibited obvious corrosion. Especially, abundant corrosion pits were found near the side of Q450NQR1. Due to the different corrosion voltages of stainless steel, weathering steel, HAZ, and welding line, a series of micro-batteries were formed in the dissimilar metal joints, which worsened the corrosion of weathering steel.
关键词:
铁素体不锈钢
,
weathering steel
,
dissimilar metal joint
,
corrosion resistance
鲍玉胜
,
王玮
,
尹衍升
,
赵文元
,
张玥
,
房晶瑞
,
梁亮
,
王敏
中国腐蚀与防护学报
采用高温火焰在纯Ti表面制备了一层致密的TiO2薄膜,通过SEM、XRD和接触角测量仪表征了氧化膜的形貌、结构和疏水性能,用电化学交流阻抗技术研究了TiO2薄膜界面阻抗的变化,利用线性极化方法评价材料的耐腐蚀性。结果表明,TiO2薄膜在海水中具有良好的耐腐蚀性,薄膜的疏水性进一步增强了材料的耐腐蚀能力。
关键词:
TiO2薄膜
,
corrosion resistance
,
hydrophobic
,
EIS
范云鹰
,
张英杰
,
陈阵
,
董鹏
,
罗少林
中国腐蚀与防护学报
分别采用硫酸盐体系和氯化物体系的最佳工艺条件电沉积制备了高铁(Fe mass%>1%)和低铁(Fe mass%<1%)的Zn-Fe-SiO2复合镀层,并系统测试了不同厚度Zn-Fe-SiO2复合镀层的耐蚀性、结合力、孔隙率和氢脆性等综合性能,同时与电镀Zn及Zn-Fe合金进行了对比.实验结果表明:Zn-Fe-SiO2复合镀层的耐蚀性及其它综合性能均优于Zn-Fe合金镀层和Zn镀层.因此,相对于电镀Zn及Zn-Fe合金,电沉积Zn-Fe-SiO2复合镀层技术具有先进性,应用前景良好.
关键词:
复合镀层
,
,
corrosion resistance
,
adhesive
,
porosity