The Experts below are selected from a list of 12576 Experts worldwide ranked by ideXlab platform
Linhai Tian - One of the best experts on this subject based on the ideXlab platform.
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Tailoring Tribological Performance of Pure Titanium by a Duplex Treatment of Laser Surface Texturing-Thermal Oxidation
Journal of Materials Engineering and Performance, 2020Co-Authors: Liu Ruyi, Shuo Yuan, Naiming Lin, Xiuzhou Lin, Zhiqi Liu, Zhenxia Wang, Qunfeng Zeng, Wengang Chen, Linhai TianAbstract:A combined surface Treatment of laser surface texturing (LST)-thermal oxidation (TO) technique was performed on pure titanium (TA2) matrix to enhance its wear resistance. The dimple-shaped texture was fabricated by using an optical fiber laser processing equipment, and the dimple-shaped texture with diameter of 300 μm and density of 5%. The thermal oxidation coating (TO-coating) was prepared by TO Treatment under 650 °C for 30 h. Microstructure, microhardness, and bonding strength of the TO-TA2 were systematically characterized. Comparative evaluation of anti-wear performance for relevant samples of Duplex Treatment TA2 (DT-TA2), LST-TA2, TO-TA2, and TA2 matrix were investigated via the dry sliding process. The results revealed that uniform and dense TO coating with a thickness of approximately 11 μm was fabricated on the surface of the TA2 matrix. The attained TO coating consisted of the compound phase of TiO2 shown by XRD detection. The surface hardness and elasticity modulus of the TA2 were improved by TO Treatment, and the attained TO coating had a strong bonding strength with the TA2 matrix. In terms of wear rate, the samples were sorted in the following order: DT-TA2 < TO-TA2 < LST-TA2 < TA2. For tribological behavior, the Duplex Treatment process can significantly reduce the abrasive wear and adhesive wear tendency of the TA2 matrix. Taking advantage of LST and TO Treatment, the wear resistance of TA2 sample after Duplex Treatment was significantly improved. In view of this, the TO coating is expected to provide wear resistance protection for pure titanium components, the presence of dimples reduced the friction coefficient of pure titanium components, and further extended their service life. The results may provide reference data for surface modification of TA2 by the laser surface texturing and thermal oxidation Duplex Treatment.
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Manipulation tribological behavior of Ti6Al4V alloy via a Duplex Treatment of double glow plasma surface molybdenizing-laser surface texturing (LST)
Journal of Materials Research and Technology, 2020Co-Authors: Shuo Yuan, Naiming Lin, Jiaojuan Zou, Zhiqi Liu, Zhenxia Wang, Qunfeng Zeng, Bin Zhao, Linhai TianAbstract:Abstract In this work, Ti6Al4V alloy was treated by a Duplex Treatment of double glow plasma surface molybdenizing-laser surface texturing (LST) aiming to realize surface strengthening and manipulate its tribological behavior. The double glow plasma surface alloying (DGPSA) with molybdenum (Mo) was firstly conducted on the Ti6Al4V alloy and followed by LST to prepare round dimple-shape texture with a density of 5%, 7%, 11%. The results showed that Mo and Mo/Ti solid solution phases were detected in the Mo-layer by X-ray diffraction (XRD), the received Mo-layer with a thickness of about 13 μm was uniform and compact. Double glow plasma surface molybdenizing significantly improved the surface hardness and elastic modulus of Ti6Al4V alloy by nanoindentation test. The gradient distributed Mo-layer was tightly adhered to the Ti6Al4V alloy matrix through scratching and indentation tests. Duplex treated Ti6Al4V alloy with a 5% texture density suggested better wear resistance in comparison to the untreated Ti6Al4V alloy, which was confirmed by a 48.7% lower specific wear rate than that of Ti6Al4V alloy. Taking advantages of DGPSA and LST, Duplex Treatment of double glow plasma surface molybdenizing-laser surface texturing was established to create on the working surface of Ti6Al4V alloy with promisingly improved tribological behavior.
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Preparation of Sn4+-Doped Titanium Dioxide Photocatalytic Films on 304 Stainless Steel by Duplex Treatment
Journal of Materials Engineering and Performance, 2014Co-Authors: Linhai Tian, Laohong Qian, Xiaohong YaoAbstract:Sn4+-doped titanium dioxide photocatalytic films were synthesized on 304 stainless steel (SS) by a Duplex Treatment. The SS substrates were alloyed with titanium (Ti) through cathodic-arc ion plating followed by a microarc oxidation (MAO) Treatment in different electrolytes. Field-emission scanning electron microscopy, x-ray diffraction, and energy dispersive spectroscopy were used to characterize the films surface morphology, crystalline phase, and composition, respectively. Photocatalytic activity was measured using an UV-Vis spectrophotometer. It was found that the films with a porous structure are mainly composed of TiO2, which exists in an anatase and rutile state. Furthermore, small quantities of SnO2 have been found in the Sn4+-doped titanium dioxide films. The fraction of anatase varies with the MAO time and electrolytes, whereas the pore size remains the similar with the same MAO current intensity and density and the surface roughness increases slightly with increasing MAO time. It was also found that the photocatalytic activity of the Sn4+-doped porous film improved, and the film synthesized with a shorter MAO time in a lower Na2SnO3-containing electrolyte is superior to the films with longer MAO times and higher Na2SnO3 concentrations.
Lei Shan - One of the best experts on this subject based on the ideXlab platform.
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structure and tribocorrosion properties of Duplex Treatment coatings of tisicn nitride on ti6al4v alloy
Ceramics International, 2019Co-Authors: Minpeng Dong, Yebiao Zhu, Chunting Wang, Lei ShanAbstract:Abstract To meet the performance requirements in harsh marine service environment, developing coatings with excellent trbibocorrosion performance is necessary. Herein, TiSiCN/nitride Duplex Treatment coatings are prepared by gas nitriding and multi-arc ion plating in turn in this work. The hardness and density are enhanced by nitriding Treatment. Duplex Treatment coatings exhibit more excellent mechanical properties possessing the maximum hardness values (33 GPa) and exceptional load bearing capacity (88 N) compared to TiSiCN coating. Meanwhile, the effect of wear on corrosion is significant and the action of corrosion determines the total degree of synergy in tribocorrosion system. Furthermore, the friction coefficient is greatly reduced through Duplex Treatment coatings during tribocorrosion test due to the good resistance to the seawater and the graphitization effect produced by TiSiCN layer.
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Structure and tribocorrosion properties of Duplex Treatment coatings of TiSiCN/nitride on Ti6Al4V alloy
Ceramics International, 2019Co-Authors: Minpeng Dong, Yebiao Zhu, Chunting Wang, Lei ShanAbstract:Abstract To meet the performance requirements in harsh marine service environment, developing coatings with excellent trbibocorrosion performance is necessary. Herein, TiSiCN/nitride Duplex Treatment coatings are prepared by gas nitriding and multi-arc ion plating in turn in this work. The hardness and density are enhanced by nitriding Treatment. Duplex Treatment coatings exhibit more excellent mechanical properties possessing the maximum hardness values (33 GPa) and exceptional load bearing capacity (88 N) compared to TiSiCN coating. Meanwhile, the effect of wear on corrosion is significant and the action of corrosion determines the total degree of synergy in tribocorrosion system. Furthermore, the friction coefficient is greatly reduced through Duplex Treatment coatings during tribocorrosion test due to the good resistance to the seawater and the graphitization effect produced by TiSiCN layer.
Minpeng Dong - One of the best experts on this subject based on the ideXlab platform.
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structure and tribocorrosion properties of Duplex Treatment coatings of tisicn nitride on ti6al4v alloy
Ceramics International, 2019Co-Authors: Minpeng Dong, Yebiao Zhu, Chunting Wang, Lei ShanAbstract:Abstract To meet the performance requirements in harsh marine service environment, developing coatings with excellent trbibocorrosion performance is necessary. Herein, TiSiCN/nitride Duplex Treatment coatings are prepared by gas nitriding and multi-arc ion plating in turn in this work. The hardness and density are enhanced by nitriding Treatment. Duplex Treatment coatings exhibit more excellent mechanical properties possessing the maximum hardness values (33 GPa) and exceptional load bearing capacity (88 N) compared to TiSiCN coating. Meanwhile, the effect of wear on corrosion is significant and the action of corrosion determines the total degree of synergy in tribocorrosion system. Furthermore, the friction coefficient is greatly reduced through Duplex Treatment coatings during tribocorrosion test due to the good resistance to the seawater and the graphitization effect produced by TiSiCN layer.
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Structure and tribocorrosion properties of Duplex Treatment coatings of TiSiCN/nitride on Ti6Al4V alloy
Ceramics International, 2019Co-Authors: Minpeng Dong, Yebiao Zhu, Chunting Wang, Lei ShanAbstract:Abstract To meet the performance requirements in harsh marine service environment, developing coatings with excellent trbibocorrosion performance is necessary. Herein, TiSiCN/nitride Duplex Treatment coatings are prepared by gas nitriding and multi-arc ion plating in turn in this work. The hardness and density are enhanced by nitriding Treatment. Duplex Treatment coatings exhibit more excellent mechanical properties possessing the maximum hardness values (33 GPa) and exceptional load bearing capacity (88 N) compared to TiSiCN coating. Meanwhile, the effect of wear on corrosion is significant and the action of corrosion determines the total degree of synergy in tribocorrosion system. Furthermore, the friction coefficient is greatly reduced through Duplex Treatment coatings during tribocorrosion test due to the good resistance to the seawater and the graphitization effect produced by TiSiCN layer.
Zhenxia Wang - One of the best experts on this subject based on the ideXlab platform.
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Tailoring Tribological Performance of Pure Titanium by a Duplex Treatment of Laser Surface Texturing-Thermal Oxidation
Journal of Materials Engineering and Performance, 2020Co-Authors: Liu Ruyi, Shuo Yuan, Naiming Lin, Xiuzhou Lin, Zhiqi Liu, Zhenxia Wang, Qunfeng Zeng, Wengang Chen, Linhai TianAbstract:A combined surface Treatment of laser surface texturing (LST)-thermal oxidation (TO) technique was performed on pure titanium (TA2) matrix to enhance its wear resistance. The dimple-shaped texture was fabricated by using an optical fiber laser processing equipment, and the dimple-shaped texture with diameter of 300 μm and density of 5%. The thermal oxidation coating (TO-coating) was prepared by TO Treatment under 650 °C for 30 h. Microstructure, microhardness, and bonding strength of the TO-TA2 were systematically characterized. Comparative evaluation of anti-wear performance for relevant samples of Duplex Treatment TA2 (DT-TA2), LST-TA2, TO-TA2, and TA2 matrix were investigated via the dry sliding process. The results revealed that uniform and dense TO coating with a thickness of approximately 11 μm was fabricated on the surface of the TA2 matrix. The attained TO coating consisted of the compound phase of TiO2 shown by XRD detection. The surface hardness and elasticity modulus of the TA2 were improved by TO Treatment, and the attained TO coating had a strong bonding strength with the TA2 matrix. In terms of wear rate, the samples were sorted in the following order: DT-TA2 < TO-TA2 < LST-TA2 < TA2. For tribological behavior, the Duplex Treatment process can significantly reduce the abrasive wear and adhesive wear tendency of the TA2 matrix. Taking advantage of LST and TO Treatment, the wear resistance of TA2 sample after Duplex Treatment was significantly improved. In view of this, the TO coating is expected to provide wear resistance protection for pure titanium components, the presence of dimples reduced the friction coefficient of pure titanium components, and further extended their service life. The results may provide reference data for surface modification of TA2 by the laser surface texturing and thermal oxidation Duplex Treatment.
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Manipulation tribological behavior of Ti6Al4V alloy via a Duplex Treatment of double glow plasma surface molybdenizing-laser surface texturing (LST)
Journal of Materials Research and Technology, 2020Co-Authors: Shuo Yuan, Naiming Lin, Jiaojuan Zou, Zhiqi Liu, Zhenxia Wang, Qunfeng Zeng, Bin Zhao, Linhai TianAbstract:Abstract In this work, Ti6Al4V alloy was treated by a Duplex Treatment of double glow plasma surface molybdenizing-laser surface texturing (LST) aiming to realize surface strengthening and manipulate its tribological behavior. The double glow plasma surface alloying (DGPSA) with molybdenum (Mo) was firstly conducted on the Ti6Al4V alloy and followed by LST to prepare round dimple-shape texture with a density of 5%, 7%, 11%. The results showed that Mo and Mo/Ti solid solution phases were detected in the Mo-layer by X-ray diffraction (XRD), the received Mo-layer with a thickness of about 13 μm was uniform and compact. Double glow plasma surface molybdenizing significantly improved the surface hardness and elastic modulus of Ti6Al4V alloy by nanoindentation test. The gradient distributed Mo-layer was tightly adhered to the Ti6Al4V alloy matrix through scratching and indentation tests. Duplex treated Ti6Al4V alloy with a 5% texture density suggested better wear resistance in comparison to the untreated Ti6Al4V alloy, which was confirmed by a 48.7% lower specific wear rate than that of Ti6Al4V alloy. Taking advantages of DGPSA and LST, Duplex Treatment of double glow plasma surface molybdenizing-laser surface texturing was established to create on the working surface of Ti6Al4V alloy with promisingly improved tribological behavior.
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Microstructure and wear behavior of Ti-6Al-4V treated by plasma Zr-alloying and plasma nitriding
Journal of Wuhan University of Technology-Mater. Sci. Ed., 2016Co-Authors: Kai Chen, Zhenxia Wang, Xiaoping Liu, X.p. Liu, Tianxu Meng, Qi Guo, Naimin LinAbstract:A Duplex Treatment of plasma Zr-alloying and plasma nitriding was used to improve the tribological properties of Ti-6Al-4V. The microstructure of the Zr-N composite (alloyed) layer formed on Ti-6Al-4V and its hardness, friction and wear properties were investigated by using OM, SEM, GDOES, EDS, microhardness tester as well as ball-on-disk tribometer. The results of microstructural analysis show that the alloyed layer is compact and uniform and is mainly composed of ZrN, TiN0.3 and AlN. A very tiny adhesive and slight oxidation wear is the primary wear mechanism for the modified Ti-6Al-4V. The tribological property is improved significantly after the Duplex Treatment. The good combination of antifriction and wear resistance for modified Ti-6Al-4V is mainly attributed to the higher surface hardness of metal nitrides formed on the surface and enhanced supporting of the Zr-diffusing layer.
Shuo Yuan - One of the best experts on this subject based on the ideXlab platform.
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Tailoring Tribological Performance of Pure Titanium by a Duplex Treatment of Laser Surface Texturing-Thermal Oxidation
Journal of Materials Engineering and Performance, 2020Co-Authors: Liu Ruyi, Shuo Yuan, Naiming Lin, Xiuzhou Lin, Zhiqi Liu, Zhenxia Wang, Qunfeng Zeng, Wengang Chen, Linhai TianAbstract:A combined surface Treatment of laser surface texturing (LST)-thermal oxidation (TO) technique was performed on pure titanium (TA2) matrix to enhance its wear resistance. The dimple-shaped texture was fabricated by using an optical fiber laser processing equipment, and the dimple-shaped texture with diameter of 300 μm and density of 5%. The thermal oxidation coating (TO-coating) was prepared by TO Treatment under 650 °C for 30 h. Microstructure, microhardness, and bonding strength of the TO-TA2 were systematically characterized. Comparative evaluation of anti-wear performance for relevant samples of Duplex Treatment TA2 (DT-TA2), LST-TA2, TO-TA2, and TA2 matrix were investigated via the dry sliding process. The results revealed that uniform and dense TO coating with a thickness of approximately 11 μm was fabricated on the surface of the TA2 matrix. The attained TO coating consisted of the compound phase of TiO2 shown by XRD detection. The surface hardness and elasticity modulus of the TA2 were improved by TO Treatment, and the attained TO coating had a strong bonding strength with the TA2 matrix. In terms of wear rate, the samples were sorted in the following order: DT-TA2 < TO-TA2 < LST-TA2 < TA2. For tribological behavior, the Duplex Treatment process can significantly reduce the abrasive wear and adhesive wear tendency of the TA2 matrix. Taking advantage of LST and TO Treatment, the wear resistance of TA2 sample after Duplex Treatment was significantly improved. In view of this, the TO coating is expected to provide wear resistance protection for pure titanium components, the presence of dimples reduced the friction coefficient of pure titanium components, and further extended their service life. The results may provide reference data for surface modification of TA2 by the laser surface texturing and thermal oxidation Duplex Treatment.
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Manipulation tribological behavior of Ti6Al4V alloy via a Duplex Treatment of double glow plasma surface molybdenizing-laser surface texturing (LST)
Journal of Materials Research and Technology, 2020Co-Authors: Shuo Yuan, Naiming Lin, Jiaojuan Zou, Zhiqi Liu, Zhenxia Wang, Qunfeng Zeng, Bin Zhao, Linhai TianAbstract:Abstract In this work, Ti6Al4V alloy was treated by a Duplex Treatment of double glow plasma surface molybdenizing-laser surface texturing (LST) aiming to realize surface strengthening and manipulate its tribological behavior. The double glow plasma surface alloying (DGPSA) with molybdenum (Mo) was firstly conducted on the Ti6Al4V alloy and followed by LST to prepare round dimple-shape texture with a density of 5%, 7%, 11%. The results showed that Mo and Mo/Ti solid solution phases were detected in the Mo-layer by X-ray diffraction (XRD), the received Mo-layer with a thickness of about 13 μm was uniform and compact. Double glow plasma surface molybdenizing significantly improved the surface hardness and elastic modulus of Ti6Al4V alloy by nanoindentation test. The gradient distributed Mo-layer was tightly adhered to the Ti6Al4V alloy matrix through scratching and indentation tests. Duplex treated Ti6Al4V alloy with a 5% texture density suggested better wear resistance in comparison to the untreated Ti6Al4V alloy, which was confirmed by a 48.7% lower specific wear rate than that of Ti6Al4V alloy. Taking advantages of DGPSA and LST, Duplex Treatment of double glow plasma surface molybdenizing-laser surface texturing was established to create on the working surface of Ti6Al4V alloy with promisingly improved tribological behavior.
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Surface texturing-plasma nitriding Duplex Treatment for improving tribological performance of AISI 316 stainless steel
Materials, 2016Co-Authors: Naiming Lin, Zhenxi Wang, Shuo Yuan, Yong Ma, Dali Li, Zhihua Wang, Junwen Guo, Jiaojuan Zou, Qiang Liu, Bin TangAbstract:Surface texturing-plasma nitriding Duplex Treatment was conducted on AISI 316 stainless steel to improve its tribological performance. Tribological behaviors of ground 316 substrates, plasma-nitrided 316 (PN-316), surface-textured 316 (ST-316), and Duplex-treated 316 (DT-316) in air and under grease lubrication were investigated using a pin-on-disc rotary tribometer against counterparts of high carbon chromium bearing steel GCr15 and silicon nitride Si3N4 balls. The variations in friction coefficient, mass loss, and worn trace morphology of the tested samples were systemically investigated and analyzed. The results showed that a textured surface was formed on 316 after electrochemical processing in a 15 wt % NaCl solution. Grooves and dimples were found on the textured surface. As plasma nitriding was conducted on a 316 substrate and ST-316, continuous and uniform nitriding layers were successfully fabricated on the surfaces of the 316 substrate and ST-316. Both of the obtained nitriding layers presented thickness values of more than 30 μm. The nitriding layers were composed of iron nitrides and chromium nitride. The 316 substrate and ST-316 received improved surface hardness after plasma nitriding. When the tribological tests were carried out under dry sliding and grease lubrication conditions, the tested samples showed different tribological behaviors. As expected, the DT-316 samples revealed the most promising tribological properties, reflected by the lowest mass loss and worn morphologies. The DT-316 received the slightest damage, and its excellent tribological performance was attributed to the following aspects: firstly, the nitriding layer had high surface hardness; secondly, the surface texture was able to capture wear debris, store up grease, and then provide continuous lubrication.
