Metal Fe,Ni and Fe-Ni Fine Fibers Derived from the Organic Gel-Thermal Reduction Process
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2007年第4期
论文作者：沈湘黔
文章页码：577 - 581
摘 要：<正>The organic gel-thermal reduction process was successfully used for the preparation of magnetic metal Ni,Fe,Fe-Ni fine fibers from raw materials of citric acid or lactic acid and metal salts.Ni, Fe and Fe-Ni fine fibers synthesized were featured with diameters of arotuld 1μm and lengths of as long as 2 m for Ni fibers,0.5 m for iron fibers,1 m for Fe-Ni fibers.The structure,thermal decomposition process and morphologies of the gel precursors and fibers derived from thermal reduction of these gel precursors were characterized by FTIR,XRD,TG/DSC and SEM,respectively.The gel spinnability largely depends on molecular structures of metal-carboxylate complexes formed in the gel.It is reasoned that these gels consist of linear-type structural molecules[（C6H6O7）Ni]n or[（C6H5O7）2Ni3]for the nickel citrate gel,[（C3H6O3）3Fe]for the ferric lactate gel,[（C6H5O7）5（NiFe）3]for the iron-nickel citrate gel respectively and the gels obtain showed a good spinning performance.
沈湘黔
摘 要：<正>The organic gel-thermal reduction process was successfully used for the preparation of magnetic metal Ni,Fe,Fe-Ni fine fibers from raw materials of citric acid or lactic acid and metal salts.Ni, Fe and Fe-Ni fine fibers synthesized were featured with diameters of arotuld 1μm and lengths of as long as 2 m for Ni fibers,0.5 m for iron fibers,1 m for Fe-Ni fibers.The structure,thermal decomposition process and morphologies of the gel precursors and fibers derived from thermal reduction of these gel precursors were characterized by FTIR,XRD,TG/DSC and SEM,respectively.The gel spinnability largely depends on molecular structures of metal-carboxylate complexes formed in the gel.It is reasoned that these gels consist of linear-type structural molecules[（C6H6O7）Ni]n or[（C6H5O7）2Ni3]for the nickel citrate gel,[（C3H6O3）3Fe]for the ferric lactate gel,[（C6H5O7）5（NiFe）3]for the iron-nickel citrate gel respectively and the gels obtain showed a good spinning performance.
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