Mechanical properties of one-step in situ synthesized NbC-Fe composite coating
Mechanical properties of one-step in situ synthesized NbC-Fe composite coating
复制标题
一步原位合成NbC-Fe复合涂层的力学性能
DOI:
10.1016/j.surfcoat2016.08.075
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发表时间:
2017-01
影响因子:
5.4
通讯作者:
Fu Yonghong
中科院分区:
文献类型:
--
作者:
Zhao Nana;Xu Yunhua;Fu Yonghong
A NbC-Fe composite coating on an iron matrix was synthesized through one-step in situ synthesis using a pure niobium (Nb) plate and gray cast iron (HT300). The coating surface morphology, microstructure, and composition were characterized using scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray diffraction (XRD). The synthesized NbC-Fe composite coating consisted of fairly agglomerated and uniformly sized (~ 200 nm) NbC particulates accounting for 95% of the volume fraction. The coating thickness was ~ 60 μm. Coating nanohardness and elasticity modulus values were 20.69 ± 0.32 GPa and 438.24 ± 3.38 GPa, respectively. Further, scratch testing, measured using a scratch tester under a progressive load of 0–100 N, revealed no delamination or peeling over the tested loads. Therefore, the coating offered the iron matrix effective protection from serious abrasion. The present study discusses the synthesis of an excellent scratch resistant NbC-Fe composite coating on an iron matrix.
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