Effects of Micro-Arc Oxidation of Ti6Al4V Alloy on Adhesion Property to Electroless Ni-P-ZrO2 Composite Platings and Their Wear Resistance

2013 ◽  
Vol 42 (12) ◽  
pp. 2427-2432 ◽  
Author(s):  
Feng Changjie ◽  
Hu Shuilian ◽  
Jiang Yuanfei ◽  
Zhou Yan
Keyword(s):  
Wear Resistance ◽  
Ti6al4v Alloy ◽  
Adhesion Property ◽  
Micro Arc Oxidation ◽  
Electroless Ni

A Preliminary Study of Anodization and Electroless Ni–P Plating on AZ80 Magnesium Alloy

2011 ◽  
Vol 299-300 ◽  
pp. 663-666 ◽  
Author(s):  
Ping Shi ◽  
Xue Dong Han
Keyword(s):  
Corrosion Resistance ◽  
Magnesium Alloy ◽  
Weight Ratio ◽  
High Strength ◽  
Surface Modifications ◽  
Atomic Ratio ◽  
Az80 Magnesium Alloy ◽  
Micro Arc Oxidation ◽  
Preliminary Study ◽  
Electroless Ni

Magnesium alloys are being used as structural components in industry because of their high strength to weight ratio. But their high electrochemical activity and poor corrosion resistance limited their applications. Therefore, surface modifications are needed for protection purpose. This paper studied the anodic micro-arc oxidation and electroless Ni-P plating surface modifications on AZ80 magnesium alloy. The SEM, XRD and EDS were used to characterize the surface coating. It shows that a micro-porous MgO layer with the pores size 5 – 20 μm was fabricated on the bare magnesium alloy. The nodule Ni-P deposition could be prepared on the out layer of MgO with Ni/P atomic ratio being 1.4. The pores in MgO layer could be sealed by the following Ni-P deposition. Therefore the corrosion resistance of the magnesium alloy could be further improved.

The Study of Electroless Ni-P and Ni-P-PTFE Coating on Steel Tire Mold

2012 ◽  
Vol 501 ◽  
pp. 316-320
Author(s):  
Jian Zhang Guo ◽  
Bin Xu
Keyword(s):  
Wear Resistance ◽  
Corrosion Resistance ◽  
Pore Structure ◽  
Energy Dispersive Spectrometer ◽  
Salt Spray ◽  
Amorphous Structure ◽  
Carbon Steels ◽  
Electrochemical System ◽  
Electroless Ni ◽  
Scanning Electron

In order to improve the surface property of the steel tire mold, carbon steels were processed by electroless Ni-P and Ni-P-PTFE under contrast experiment. The coatings were characterized by Scanning Electron Microscopy (SEM) and Energy Dispersive Spectrometer (EDS). The wear resistance and corrosion resistance of the coatings were explored by tribometer, salt spray cabinet and advanced electrochemical system. The experimental results showed that the Ni-P coating was amorphous structure, and the Ni-P-PTFE coating was micro-pore structure; The wear resistance of Ni-P-PTFE coating was superior to Ni-P coating; In view of the micro-pore structure, the corrosion resistance of Ni-P-PTFE coating was worse than Ni-P coating, but they were all superior to carbon steels, and the service life of the steel tire mold were improved.

A study on the wear resistance of electroless Ni–P/Diamond composite coatings

Wear ◽  
2000 ◽  
Vol 239 (1) ◽  
pp. 111-116 ◽  
Author(s):  
V.V.N Reddy ◽  
B Ramamoorthy ◽  
P.Kesavan Nair
Keyword(s):  
Wear Resistance ◽  
Composite Coatings ◽  
Diamond Composite ◽  
Electroless Ni

scholarly journals Morphology and Wear Resistance of Composite Coatings Formed on a TA2 Substrate Using Hot-Dip Aluminising and Micro-Arc Oxidation Technologies

Materials ◽  
2019 ◽  
Vol 12 (5) ◽  
pp. 799 ◽  
Author(s):  
Shaopeng Wang ◽  
Lian Zhou ◽  
Changjiu Li ◽  
Zhengxian Li ◽  
Hongzhan Li
Keyword(s):  
Wear Resistance ◽  
Surface Composition ◽  
Pure Titanium ◽  
Titanium Substrate ◽  
Ceramic Coatings ◽  
Oxide Ceramic ◽  
Pure Aluminium ◽  
X Ray ◽  
Micro Arc Oxidation

Aluminium layers were coated onto the surface of pure titanium using hot-dip aluminising technology, and then the aluminium layers were in situ oxidised to form oxide ceramic coatings, using the micro-arc oxidation (MAO) technique. The microstructure and composition distribution of the hot-dip aluminium coatings and ceramic layers were studied by using scanning electron microscopy and energy-dispersive X-ray spectroscopy. The phase structure of the MAO layers was studied using X-ray diffraction. The surface composition of the MAO layer was studied by X-ray photoelectron spectroscopy. The wear resistance of the pure titanium substrate and the ceramic layers coated on its surface were evaluated by using the ball-on-disc wear method. Therefore, aluminising coatings, which consist of a diffusion layer and a pure aluminium layer, could be formed on pure titanium substrates using the hot-dip aluminising method. The MAO method enabled the in-situ oxidation of hot-dip pure aluminium layers, which subsequently led to the formation of ceramic layers. Moreover, the wear resistance values of the ceramic layers were significantly higher than that of the pure titanium substrate.

Wear resistance of micro-arc oxidation coatings on biomedical NiTi alloy

2009 ◽  
Vol 487 (1-2) ◽  
pp. 391-394 ◽  
Author(s):  
F. Liu ◽  
J.L. Xu ◽  
D.Z. Yu ◽  
F.P. Wang ◽  
L.C. Zhao
Keyword(s):  
Wear Resistance ◽  
Niti Alloy ◽  
Micro Arc Oxidation

scholarly journals Fabrication and Wear Resistance of TiO2/Al2O3 Coatings by Micro-arc Oxidation

2017 ◽  
Vol 46 (1) ◽  
pp. 23-27 ◽  
Author(s):  
Shen Yizhou ◽  
Tao Haijun ◽  
Lin Yuebin ◽  
Zeng Xiaofei ◽  
Wang Tao ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Micro Arc Oxidation
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