摘要
对电沉积12.3%P(质量分数)镍磷合金进行热处理,部分晶化获得非晶纳米晶复合镀层。利用X射线衍射仪、透射电镜和高分辨透射电镜分析镀层的结构。结果表明,镀态时镀层呈典型的非晶态结构,控制热处理工艺可得到非晶纳米晶的复合镀层。通过动电位极化曲线(3.5%NaCl溶液)测定,得知部分晶化的镀层耐蚀性得到改善。由于具有少量纳米晶相镶嵌于连续非晶相上,非晶纳米晶复合结构的镍磷合金镀层耐蚀性优于非晶态镍磷合金镀层。
Amorphous-nanocrystalline composite coatings were prepared by annealing electrodeposited Ni-P alloy with 12.3%P （mass fraction）. The structure of coatings is studied using X-ray diffractrometry, transmitted electron microscope and high resolution transmission electron microscope. The results show that the as-plated coating exhibits a rounded-mound topography and has an amorphous structure. Through the potentiodynamic polarization curves, the corrosion data of the coatings are obtained. The corrosion resistance of the partially crystallized coatings is improved. The corrosion resistance of partially crystallized coatings is better than that of Ni-P amorphous alloy, due to a small quantity of nanoscale crystals embedded in amorphous matrix.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2007年第9期1481-1485,共5页
The Chinese Journal of Nonferrous Metals
基金
国家高技术研究发展计划资助项目(2002AA331080)
北京市教委科技发展计划重点项目基金资助项目(KZ200410028012)
关键词
非晶纳米晶
复合镀层
电沉积
耐蚀性
amorphous-nanocrystalline
composite coating
electrodeposition
corrosion resistance
