摘要
化学镀Ni-P二元合金镀层的耐蚀性与其组织结构、表面形态密切相关。实验获得磷质量分数11.54%的高磷镀层,镀态下为非晶态结构。300℃热处理后开始晶化,并在400℃热处理时完全晶化,镀层由非晶态的Ni相转变为Ni3P+Ni混合稳定相。用原子力显微镜(AFM)对镀层表面观察发现,不同热处理下的镀层合金表面形态差别很大。形态的差异对镀层合金的耐蚀性有影响,特别是400℃热处理后,由于表面"纳米植被"的覆盖使得此时镀层合金的耐蚀性最优异。
Corrosion resistance of electroless plating Ni-P binary alloy was closely related to its microstructure and surface morphology. High phosphorus coating with 11.54%P was obtained by experiment, which belonged to amorphous structure. Crystallization process of the microstructure started at 300 ℃, and completed at 400 ℃, thereafter nickel matrix phase transformed to Ni3P＋Ni mixed stable phase An Atomic Force Microscope was used to study the surface morphology of Ni-P coating before and after different heat treatments. It was found that the corrosion resistance was affected by the surface morphology of heated coatings. The corrosion resistance was best after 400 ℃ heat treatment because the ＂nano-plant＂ covered the coating surface .
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2009年第A01期52-55,共4页
Rare Metal Materials and Engineering
基金
山西省青年科学基金(20041023)
国家自然科学基金(50471070)
山西省自然科学基金(20051050)
关键词
化学镀
原子力显微镜
晶化
耐蚀性
electroless plating
atomic force microscope
crystallization
corrosion resistance
