Development of Alloy-Coated Steel having High Corrosion Resistance for Methanol fuel tanks of Fuel Cell Electric Vehicles
燃料电池电动汽车甲醇燃料箱用高耐蚀合金涂层钢的开发
基本信息
- 批准号:15560618
- 负责人:
- 金额:$ 2.37万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 财政年份:2003
- 资助国家:日本
- 起止时间:2003 至 2004
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Corrosion and electrochemical properties of Sn-8%Zn alloy-coated steel prepared by a melt-dipping method have been investigated in methanol containing H_2O, NaCl and HCOOH, which are known as contaminants in methanol fuel. The coated steel showed high corrosion resistance in methanol containing 0.1-30%H_2O and 0.1-30%H_2O+0.1%NaCl. The corrosion rates of the coated steel in these solutions were less than 0.66 μg・m^<-2>・s^<-1>. However, the coated steel showed slight corrosion in methanol containing 0.1-30%H_2O+0.1%HCOOH and its corrosion rates were 2.4 -3.5 μg・m^<-2>・s^<-1>. Anodic and cathodic polarization curves measured in methanol containing 0.1-30%H_2O+0.1%NaCl showed that the corrosion potential of the coated steel was close to that of Zn, while the pitting potential of the coated steel was close to that of Sn. According to AES and XPS analyses, the surface film of the coated steel after an immersion corrosion test in methanol containing 0.1%H_2O+0.1%NaCl was composed of a large amount of oxide and hydroxide of Zn and a small amount of those of Sn. It was presumed that the corrosion of the coated steel proceeded through the selective dissolution of Zn component in the coating layer in methanol containing H_2O and NaCl.
研究了采用熔融浸渍法制备的Sn-8%Zn合金镀层钢在含有H_2O、NaCl和HCOOH等甲醇燃料污染物的甲醇中的腐蚀和电化学性能。含0.1-30%H_2O和0.1-30%H_2O+0.1%NaCl的甲醇溶液中涂层钢的腐蚀速率较小。但涂层钢在0.1-30%H_2O+0.1%HCOOH的甲醇中表现出轻微腐蚀,腐蚀速率为2.4 -3.5 μg·m^。 <-2>·s^<-1> 在含有甲醇的情况下测量的阳极和阴极极化曲线。 0.1-30%H_2O+0.1%NaCl表明,涂层钢的腐蚀电位与Zn接近,而根据AES和XPS分析,涂层钢的点蚀电位与Sn接近。涂层钢在0.1%H_2O+0.1%NaCl的甲醇中进行浸泡腐蚀试验后,其成分为大量的Zn的氧化物和氢氧化物以及少量的Zn推测镀层钢的腐蚀是通过镀层中的Zn组分在含有H_2O和NaCl的甲醇中的选择性溶解来进行的。
项目成果
期刊论文数量(0)
专著数量(0)
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AKAO Noboru其他文献
AKAO Noboru的其他文献
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{{ truncateString('AKAO Noboru', 18)}}的其他基金
Development of high-corrosion resistance Mg-Li alloy using the combinatorial approach method
利用组合方法开发高耐蚀镁锂合金
- 批准号:
24656428 - 财政年份:2012
- 资助金额:
$ 2.37万 - 项目类别:
Grant-in-Aid for Challenging Exploratory Research
Relationship between Nano-topology and Corrosion Resistance of Metallic Thin Films Prepared by Ion-Beam-Sputter Deposition Method
离子束溅射沉积法制备金属薄膜的纳米拓扑结构与耐腐蚀性能的关系
- 批准号:
19560718 - 财政年份:2007
- 资助金额:
$ 2.37万 - 项目类别:
Grant-in-Aid for Scientific Research (C)