量子电子学报2017，Vol.34Issue(4)：495-498,4.DOI:10.3969/j.issn.1007-5461.2017.04.019
镀镍钴粒在压水堆服役的可行性研究
Feasibility of nickel electroplated Co-pellets working in pressurized water reactor
摘要
Abstract
In order to preliminarily investigate the feasibility of nickel electroplated Co-pellets working in nonneutron irradiated steady state pressurized water reactor and influence of extreme accident on electroplated nickel coating,the nickel plated Co-pellets are heat treated at 400 ℃,600 ℃ in 2 MPa helium environment for 240 h,0.5 h,respectively.The surface and fracture morphology of the electroplating nickel layer are characterized by scanning electron microscope.The diffusion of interface elements between coating and substrate is analyzed with energy dispersive spectrometer.Results show that the abrupt change of thermal expansion coefficient near Curie temperature 358 ℃ of nickel layer and the phase transition of cobalt near 427℃ will not cause destructive damage to nickel coating.The element inter-diffusion of interface makes the combining of coating and substrate more closely.关键词
光谱学/热处理/结合力/界面分析/电镀镍钴粒/压水堆Key words
spectroscopy/heat treatment/adhesion/interface analysis/nickel electroplated Co-pellets/pressurized water reactor分类
矿业与冶金引用本文复制引用
张勇..镀镍钴粒在压水堆服役的可行性研究[J].量子电子学报,2017,34(4):495-498,4.基金项目
Supported by Peak Plan Project of China General Nuclear Power Group(中国广核集团尖峰计划项目,20150078[4500091604]) （中国广核集团尖峰计划项目,20150078[4500091604]）
