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| 1 | Hydroxyapatite Bioceramic Coatings Prepared by Hydrothermal-electrochemical Deposition Method显示文摘The hydroxyapatite(HA) ceramic coating was successfully prepared on Ti6Al4V alloy by the hydrothermal-electrochemical deposition method with constant voltage model. The phases of deposits were analyzed by X-ray diffraction. The releationship between crystallinity and depositing temperature was discussed. The microstructures of hydroxyapatite coating were observed by scanning electron microscope. The experimental results showed that the phases, crystallinity and morphologies of deposits were influenced by depositing temperature(100 ℃, 120 ℃, 140 ℃, 160 ℃, 180 ℃ and 200 ℃, respectively). The special hydrothermal environment can lower the crystallization temperature of HA. The crystallinity of HA increases firstly and then decreases with the increase of temperature. There is little hydroxyapatite deposited on the Ti6Al4V surface when the depositing temperature is 100 ℃. The HA deposition increases with the increase of the depositing temperature. And the HA morphologies are influenced by the depositing temperature. | 何代华 LIU Ping LIU Xinkuan CHEN Xiaohong MA Fengcang LI Wei ZHAO Caixia TU Jieyuan | 2014 | Journal of Wuhan University of Technology(Materials Science)2014，29，2： | 4 |
| 2 | Preparation of Hydroxyapatite-titanium Dioxide Coating on Ti6Al4V Substrates using Hydrothermal-electrochemical Method显示文摘Ti6Al4V substrates were anodized in a 0.5 mol/L H_2SO_4 solution at applied voltages of 90-140 V.A hydroxyapatite-titanium oxide(HA-TiO2)coating was then deposited on the anodized Ti6Al4 V substrates via a hydrothermal-electrochemicalmethod at a constant current.The obtained films and coatings were characterized by X-ray diffraction,scanning electron microscopy,energy-dispersive X-ray spectroscopy,and Fourier-transform infrared spectrometry.The microstructures of the porous films on the Ti6Al4 V substrates were studied to investigate the effect of the anodizing voltage on the phase and morphology of the HATiO_2 coating.The results indicated that both the phase composition and the morphology of the coatings were significantly influenced by changes in the anodizing voltage.HA-TiO_2 was directly precipitated onto the surface of the substrate when the applied voltage was between 110 and 140 V.The coatings had a gradient structure and the HA exhibited both needle-like and cotton-like structures.The amount of cotton-like HA structures decreased with an increase in voltage from 90 to 120 V,and then increased slightly when the voltage was higher than 120 V.The orientation index of the(002)plane of the coating was at a minimum when the Ti6Al4 V substrate was pretreated at 120 V. | 何代华 WANG Pu LIU Ping LIU Xinkuan MA Fengcang LI Wei CHEN Xiaohong ZHAO Jun YE Hong | 2016 | Journal of Wuhan University of Technology(Materials Science)2016，31，2： | 3 |
| 3 | Hydroxyapatite Growth on Ti MAO Surface Assisted by the Addition of Calcium and Phosphate Ions in Hydrothermal Treatment Solution显示文摘Microarc oxidation was performed on Ti-6Al-4V in an electrolyte containing calcium and phosphate ions.Samples were hydrothermally treated in different solutions containing calcium and phosphate ions.Various hydroxyapatite coatings were formed.It was found that hydroxyapatite coating is improved by the addition of calcium and phosphate ions in hydrothermal solutions.The addition of phosphate ions promotes the nucleation and growth of hydroxyapatite.But the effect of single calcium ions is not obvious.The addition of calcium and phosphate ions increases the nucleation and growth of hydroxyapatite,but decreases the preferred growth trend in some extent. | Ma Fengcang Liu Ping Li Wei Liu Xinkuan Chen Xiaohong Yang Lihong Zhu Jianmin | 2012 | 稀有金属材料与工程2012，41，S1： | 3 |
| 4 | Effects of Al Content on Microstructure and Mechanical Property of CrAlN Coating Synthesized by Reactive Magnetron Sputtering显示文摘A series of CrAlN coatings with different Al content were synthesized on high-speed steel(M2)substrate by reactive direct current(DC)magnetron sputtering.The influences of Al content on the microstructure and mechanical property of CrAlN coatings were studied by scanning electron microscopy(SEM),X-ray diffraction(XRD),energy dispersive spectrum(EDS)and nano-indentation techniques,respectively.The results indicate that the coatings exhibit only fcc c-CrN phase when Al content is less than 65 at%,and fcc c-CrN and c-AlN phases when Al content is 78 at%.The coating with Al content of 60 at%exhibits high hardness and elastic modulus.The maximum hardness and elastic modulus values could reach 36.8 GPa and 459.5 GPa,respectively. | Li Wei Liu Ping Zheng Kangpei Ma Fengcang Liu Xinkuan Chen Xiaohong Yang Lihong | 2012 | 稀有金属材料与工程2012，41，S1： | 1 |
| 5 | Microstructure evolutionof near-a titanium alloys during thermomechanical processing显示文摘 | Ma Fengcang Lu Weijie Qin Jining’ | 2006 | Materials Science and Engineering A2006，416，： | 1 |
| 6 | Microstructure evolution of near-a titanium alloys during thermomechanical processing显示文摘 | Ma Fengcang Lu Weijie Qin Jining | 2006 | Materials Science and Engineering2006，416，： | 1 |
| 7 | Microstructure evolution of near-α titanium alloys during thermomechanical processing显示文摘 | Ma Fengcang Lu Weijie Qin Jining | 2006 | Materials Science and Engineering2006，416，： | 1 |
| 8 | Effect of volume fraction of reinforcement on room temperature tensile property of in situ (TiB+TiC)/Ti matrix composites 显示文摘 | Wang Minmin Lu Weijie Qin Jining Ma Fengcang Lu Junqiang Zhang Di | 2006 | Materials and Design2006，27，： | 1 |
| 9 | Microstructure evolution of near-α titanium alloys during thermo-mechanical processing 显示文摘 | Ma Fengcang Lu Weijie Qin Jining | 2006 | Materials Science Engineering2006，416，： | 1 |
| 10 | Hot deformation behavior of in situ synthesized Ti-1100 composite reinforced with 5 vol.% TiC particles显示文摘 | Fengcang Ma Weijie Lu Jining Qin Di Zhang | 2005 | Materials Letters2005，，3： | 1 |
| 11 | Study on Technology of Aluminizing and Internal Oxidation on Surface of Cu-Al-Y Alloy显示文摘Aluminum was deposited by diffusion into Cu-Al-Y alloy substrates by the pack-cementation process.Diffusion was carried out in two kinds of container with pot-type and can-type,and the results are presented.The effects of various time and temperature on the coating characteristics of Cu-Al-Y was also investigated.The result shows that the diffusion layer is nearly 170-200μm in thickness by aluminizing treatment at 900-950℃for 6-8 h in pot-type container.The aluminized layers were observed by a scanning electron micrograph(SEM),we can found:A uniform coating was achieved on Cu-Al-Y alloy surface,relatively uniform thickness and even interfaces between the layers and the substrate.The diffusion coefficient of Al in Cu-Al-Y alloys at 900℃in pot-type container can be calculated is 3.65×10-12 m 2 /s. | Chen Xiaohong Liu Ping Liu Xinkuan Ma Fengcang Li Wei Zhang Yi Tian Baohong | 2012 | 稀有金属材料与工程2012，41，S1： | 1 |
| 12 | Deformation behavior of Fe-Mn-C TWIP steel within the temperature range of hot rolling显示文摘The hot-deformation behavior of Fe-Mn-C twinning induced plasticity(TWIP) steel was investigated by conducting hot compression tests within a recommended hot rolling temperature range at various strain rates.Flow resistance curves during hot-deformation were obtained,and strain rate sensitivities and activation energies for plastic deformation were calculated using the power law.It is found that the addition of Al and Si clearly increases the peak stresses for the present alloys,especially at 950 ℃.But Mn has a minor effect on the stress-strain curves and activation energy when its content varies from 15 mass% to 22 mass% for the present alloys. | Ma Fengcang Feng Weijun Wang Li Zhang Di | 2008 | Baosteel Technical Research2008，2，4： | 0 |
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