LaCl3-modified Ni deposits on 3D-heterotypic porous Ti surface for strengthening its mechanical and electrochemical properties
LaCl3-modified Ni deposits on 3D-heterotypic porous Ti surface for strengthening its mechanical and electrochemical properties
复制标题
LaCl3 修饰的 Ni 沉积在 3D 异型多孔 Ti 表面上，以增强其机械和电化学性能
DOI：
10.1016/j.surfcoat.2019.07.063
复制
发表时间：
2019-10
影响因子：
5.4
通讯作者：
Wang Yuxin
中科院分区：
文献类型：
--
作者：
Zhou Xiaowei;Wang Yuxin
为了增加Ni沉积与Ti表面的界面结合，本工作的目的是探索在Ti衬底多孔表面上制备lacl3修饰的Ni纳米晶体的有效途径。在含h3po4的酸溶液中，在直流电压180 V下进行表面阳极氧化，得到了直径为~300 nm的三维异型纳米孔。基于以上考虑，对具有三维开放网状结构的阳极氧化表面进行高吸附处理，使Ni晶体在三维孔隙中点蚀生长。实验数据表明，Ni- lacl3沉积形成了具有不同取向的Ni(111)(200)(220)（311）晶面的叶状表面，而纯Ni沉积则只生长Ni(111)（200）晶面。纳米压痕实验表明，随着lacl3添加量从0到2.0 g/L的增加，Ni样品的显微硬度（H3）和弹性模量（E2）的比值显著增加。此外，Ni-2.0 g/L lacl3复合材料的稳态摩擦系数为~0.28，比纯Ni样品在500 °C空气中氧化时的摩擦系数低约一个数量级。在1 M (mol/L) HCl溶液中，高吸附性的La3+离子与富la的不溶性腐蚀产物共存，是lacl3改性镍镀层抗腐蚀性能显著提高的原因。因此，在钛合金三维异质多孔表面制备镍基纳米复合材料将为保护钛合金免受磨损和腐蚀损伤提供有效的指导。
For increasing the interfacial bonding of Ni deposits onto Ti surface, the objectives of this work are to explore an effective approach for LaCl3-modified Ni nanocrystals on porous surface of Ti substrate. Three-dimensional (3D) heterotypic nanopores were well organized with a diameter size of ~300 nm through surface anodizing in H3PO4-containing acid solution at DC 180 V. In view of the above considerations, the anodized surface with a 3D-open reticular structure was processed of high adsorption capacity leading into pitting growth of Ni crystals into 3D-pores. Experimental data have referred that a leaf-like surface with the diversified orientations of Ni (111) (200) (220) (311) facets were conducted for Ni-LaCl3deposits instead of an exclusive growth of Ni (111) (200) facets for pure Ni. Based on Nanoindentation tests, it exhibited the ratio of micro hardness (H3) and elastic modulus (E2) of Ni samples remarkably increased with increasing LaCl3addition from 0 to 2.0 g/L. As excepted, the steady-state friction coefficient was ~0.28 for Ni-2.0 g/L LaCl3composites, which was about one order of magnitude lower than that of pure Ni sample during oxidized at 500 °C in air. The exceptional improvements of corrosion resistance for LaCl3-modified Ni deposits were associated with the co-existence of high adsorptive La3+ions and the La-rich insoluble corrosive products in 1 M (mol/L) HCl solution. In light of this, Ni-based nanocomposites on 3D-heterotypic porous surface of Ti alloys would provide an effective guidance for protecting Ti alloys against wear and corrosive damages.
登录
查看更多内容
影响因子：
4.6
作者：
Shao Guangjie;Qin Xiujuan;Wang Hai-yan;Jing Tian-fu;Yao Mei
通讯作者：
Shao Guangjie;Qin Xiujuan;Wang Hai-yan;Jing Tian-fu;Yao Mei
影响因子：
6.2
作者：
D. Sahoo;R. Mishra;H. Singh;N. Krishnamurthy
通讯作者：
D. Sahoo;R. Mishra;H. Singh;N. Krishnamurthy
直流阳极氧化提高AZ91D镁合金富镁环氧涂层防护性能
影响因子：
6.6
作者：
Lu, Xiangyu;Feng, Xingguo;Zheng, Chuanbo
通讯作者：
Zheng, Chuanbo
DOI：
10.4028/www.scientific.net/msf.488-489.111
发表时间：
2005-03
期刊：
Materials Science Forum
影响因子：
--
作者：
Guohua Wu;Hong Guo;X. Zeng;W. Ding
通讯作者：
Guohua Wu;Hong Guo;X. Zeng;W. Ding
影响因子：
6.7
作者：
B. Li;Yifu Shen;Weiye Hu
通讯作者：
B. Li;Yifu Shen;Weiye Hu