Ming ZHANG
金属学报(英文版)
In order to reveal evolution of the rust layer during atmospheric corrosion, commercial weathering steel (WS) 09CuPCrNi and a recently developed bainite WS were subjected to a salt fog test. The protection and compactness of the rust layer were evaluated by electrochemical analysis, absorption-desorption test, etc. The experimental results indicate that more compact rust layer could be derived from the rust particles with larger size. The well-established notion that the rust particle growth can induce the decrement of corrosion resistance of WS. However, the present investigation shows that the notion might not be universally accurate. The unusual result means that the rust particles might grow anisotropically during corrosion.
关键词:
Weathering steel
,
corrosion
,
rust particle
,
coarsening
路浩
,
何建英
宇航材料工艺
doi:10.3969/j.issn.1007-2330.2015.05.014
针对焊枪可达性差等难熔合焊接结构,提出了活性熔化极气体保护焊焊接新方法.该方法可增加焊接熔深,改善难熔焊接结构的熔合不良,获得高质量的焊接接头.采用活性熔化极气体保护焊接对耐候钢进行了工艺试验,对焊接接头组织、冲击韧性及断口形貌进行分析.结果表明,相对熔化极气体保护焊,活性熔化极气体保护焊在同等焊接热输入下熔深显著增加,焊缝表面及焊接接头内部质量高,接头组织更为细化,过热区析出碳化物相也更加细小弥散,冲击韧性提高,冲击断口韧性特征更明显.
关键词:
活性熔化极气体保护焊
,
耐候钢
,
接头组织
,
冲击断口
王博
,
郑春玉
,
郑艳
,
王德永
,
刘承军
,
姜茂发
腐蚀学报（英文）
doi:10.3969/j.issn.1002-6495.2009.04.004
应用动电位扫描和电化学阻抗谱(EIS)技术研究了高铬含量对耐候钢电化学行为的影响.动电位扫描极化曲线结果表明,增大钢中铬质量分数可以提升耐候钢的自腐蚀电位E0,降低耐候钢腐蚀速率;电化学阻抗谱分析结果则显示高铬耐候钢具有较致密有效的腐蚀产物膜,抵御离子传导能力增强.
关键词:
耐候钢
,
铬
,
极化曲线
,
电化学阻抗谱
