【摘 要】
：
To improve corrosion and wear resistances of the Zirconium(Zr) based alloys which are widely applied in nuclear reactors and chemical corrosion-resistant equipment,a new surface modification scheme was designed to deposit a Zr75Cu25 coating on Zr substrat
【机 构】
：
College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nan
【出 处】
：
武汉理工大学学报（材料科学版）（英文版）
论文部分内容阅读
To improve corrosion and wear resistances of the Zirconium(Zr) based alloys which are widely applied in nuclear reactors and chemical corrosion-resistant equipment,a new surface modification scheme was designed to deposit a Zr75Cu25 coating on Zr substrate by using magnetron sputtering technique.The microstructure and the phase composition were characterized by scanning electron microscope,transmission electron microscope,and X-ray diffraction measurements.The tribological properties and the corrosion resistance were investigated by performing reciprocating tribo-tester and electrochemical tests,respectively.It is found that the Zr75Cu25 coating is made up of a mixture of amorphous and α-(Zr) nanocrystalline phases.The nanocrystalline particles with a size of 5-10 nm are homogenously dispersed in the amorphous matrix.The Zr75Cu25 coating shows excellent tribological properties,due to the dispersion strengthen caused by the homogeneous distribution ofα-(Zr) nano-size particles among the amorphous matrix.In addition,it is revealed that the Zr75Cu25 coating makes the Zr substrate exhibit excellent corrosion resistance,due to the robust passive film with a compact structure of the amorphous/nanocrystalline mixture.
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