摘要
采用熔盐电沉积法制备了Ni/W复合层,通过扫描电镜,辉光放电光谱仪和电子背散射衍射技术对Ni/W复合层的微观结构、复合层厚度、晶粒尺寸及小角度晶界频率进行了表征。结果表明,Ni/W复合层的断裂方式为解理断裂;当电沉积温度为1073 K时,Ni/W复合层的表面平整光滑,晶粒尺寸大小均匀;随电沉积温度升高,复合层厚度逐渐增加,Ni在钨板中的扩散系数增大,小角度晶界频率增加。
Ni/W coatings were electrodeposited in molten salt. Microstructure,thickness,grain size and frequency of low angle grain boundaries of the coatings were characterized by means of scanning electron microscopy（SEM）,glow discharge spectrometer（GDA） and electron backscattered diffraction（EBSD） technique. The results show that the fracture mode of the Ni/W coating is cleavage fracture.The surface of the coating electrodeposited at 1073 K is smooth and compact. Thickness,diffusion of Ni and frequency of low angle grain boundaries of the coatings increase with the increasing electrodepositing temperature.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2016年第12期140-146,共7页
Transactions of Materials and Heat Treatment
基金
国家自然科学基金(51274082)
