Growth in solution of hooked Ni–Fe fibers by oriented rotation and attachment approaches  

作　　者：Yong Zhang Fang Liu Wei-ze Zhang 

机构地区：[1]School of Materials Science and Engineering,Dalian Jiaotong University,Dalian 116028,China [2]The Eighteenth Bureau of Chinese Railway Co.Ltd.,Guiyang 561000,China

出　　处：《International Journal of Minerals,Metallurgy and Materials》2016年第4期466-473,共8页矿物冶金与材料学报（英文版）

基　　金：financially supported by the Project of Education Department of Liaoning Province,China(No.990790);the National Natural Science Foundation of China(No.51402035)

摘　　要：Inspired by the curved branches of fractal trees, hooked Ni–Fe fibers were grown in situ in Ni–Fe composite coatings on a spheroidal graphite cast iron substrate. These hooked Ni–Fe fibers exhibited inclination angles of about 39°, which was in accordance with the theoretical prediction of 37°. Ni–Fe nanostructures self-assembled to form dendrites and evolved into hooked fibers by an oriented attachment reaction. The orientation rotation of Ni–Fe nanostructures played an important role in the growth of curved hooked Ni–Fe fibers. During sliding wear tests, the volume loss of the spheroidal graphite cast iron substrate was 2.2 times as large as that of the Ni–Fe coating reinforced by hooked fibers. The good load-transferring ability of hooked Ni–Fe fibers led to an improvement in their wear properties during wear tests.Inspired by the curved branches of fractal trees, hooked Ni–Fe fibers were grown in situ in Ni–Fe composite coatings on a spheroidal graphite cast iron substrate. These hooked Ni–Fe fibers exhibited inclination angles of about 39°, which was in accordance with the theoretical prediction of 37°. Ni–Fe nanostructures self-assembled to form dendrites and evolved into hooked fibers by an oriented attachment reaction. The orientation rotation of Ni–Fe nanostructures played an important role in the growth of curved hooked Ni–Fe fibers. During sliding wear tests, the volume loss of the spheroidal graphite cast iron substrate was 2.2 times as large as that of the Ni–Fe coating reinforced by hooked fibers. The good load-transferring ability of hooked Ni–Fe fibers led to an improvement in their wear properties during wear tests.

关 键 词：metal fiber fiber growth ORIENTED ATTACHMENTS composite coatings self assembly NANOSTRUCTURES 

分 类 号：TG174.4[金属学及工艺—金属表面处理] TG146.15[金属学及工艺—金属学]