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Study on the thermal decomposition of nickel fibers prepared by nickel citrate

YANG Xiao-jiao1,LIU Ying1,2,LI Jun1,ZHANG Xiao-yan1(1.School of Materials Science and Engineering,Sichuan University,Chengdu 610065,China; 2.Key Laboratory for Special and Advanced Materials,Ministry of Education,Chengdu 610065,China)  
The nickel citrate precursor fibers were prepared,using citric acid and basic nickel carbonate as the raw materials by the sol-gel method.The nickel fibers were derived from thermal decomposition of the precursors in argon gas atmosphere.The morphologies,thermal decomposition process and structure of the nickel fibers were characterized by FE-SEM/EDS,DSC-TG,XRD,FT-IR and XPS,respectively.The experimental results indicated that the nickel appeared when the heat treatment temperature was 300℃,and there was no nickel oxide existed during the whole process of the thermal decomposition.So the nickel fibers could be formed directly by the thermal decomposition of the precursor fibers,without the process of nickel oxide reduction.
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