摘要
用多次扫描电位法研究了C和W双注入H13钢的抗腐蚀特性,用扫描电子显微镜(SEM)对改性机理进行了分析,还讨论了抗腐蚀增强机理。实验结果表明,经过30周期腐蚀后,H13钢表面出现了严重的腐蚀现象,表面上的腐蚀坑形状和排列具有晶态特征。C和W双注入H13钢经过50周期腐蚀后,发现表面仅出现了很轻微的腐蚀现象。当注量较低时,表面出现了小而浅的腐蚀坑,腐蚀坑的形状和排列没有出现晶态特征,说明抗腐蚀钝化层为非晶态结构,这种结构具有良好的抗腐蚀特性;当注量较大时,经过长达88周期腐蚀后,表面仍未出现腐蚀坑,说明抗腐蚀特性得到了进一步的提高。
The properties of corrosion resistance for C and W dual-implanted H13 steel were studied using multi-sweep cyclic voltammetry. The corrosion morphologies were investigated by scanning electron microscopy (SEM). The results show that after corrosion for 30 voltage scanning-loops, serious corrosion morphology appears on the surface of H13 steel: dense corrosion pits are distributed on the surface. Both shape and distribution morphology of these pits indicate the crystal proper-ties: some pits are triangle or rectangle, and the pits are located along grain boundaries. But after corrosion of the W and C dual implantated steel samples, surface corrosion pits are shallow and small. Shallow corrosion pits are dislocated random, their shape and distribution are not provided with crystal properties. When the fluence is increased and after corrosion for 88 voltage scanning-loops, the surface corrosion pits are still shallow and small, showing the corrosion resistance to be enhanced further. Finally the mechanism of corrosion resistance was discussed.
出处
《核技术》
CAS
CSCD
北大核心
2003年第8期582-584,共3页
Nuclear Techniques
基金
国家自然科学基金(59671051)
国家863计划(2001AA38020)资助
关键词
C和W双注入
H13钢
抗腐蚀机制
多次扫描电位
Carbon and tungsten dual implantation, H13 steel, Corrosion resistance mechanism, Multi-sweep cyclic voltammetry CLC TN305.3
