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| 1 | Effects of temperature on the tribological behavior of Al0.25CoCrFeNi high-entropy alloy显示文摘The tribological behavior of Al0.25 CoCrFeNi high-entropy alloy(HEA) sliding against Si3N4 ball was investigated from room temperature to 600°. The microstructure of the alloys was characterized by simple FCC phase with 260 HV. Below 300°, with increasing temperature, the wear rate increased due to high temperature softening. The wear rate remained stabilized above 300°due to the anti-wear effect of the oxidation film on the contact interface. The dominant wear mechanism of HEA changed from abrasive wear at room temperature to delamination wear at 200°, then delamination wear and oxidative wear at 300°and became oxidative above 300°. Moreover, the adhesive wear existed concomitantly below 300°. | L.M.Du L.W.Lan S.Zhu H.J.Yang X.H.Shi P.K.Liaw J.W.Qiao | 2019 | Journal of Materials Science & Technology2019，35，5： | 17 |
| 2 | Microstructure and properties of in-situ chromium carbide composite coating by laser cladding显示文摘Using Ni/Cr/graphite powder blends as raw powders,a Ni matrix composite coating reinforced by in-situ carbide,was fabricated on the surface of Q235 by means of laser cladding. These microstructure and properties were discussed. The result of phase analysis( XRD) and microstructure investigation( SEM) showed that the coatings consist mainly of Cr_3 C_2,Cr_7 C_3 and γ-( Ni,Cr),which are consistent with the thermodynamic calculations. The wear morphology of the coatings was also examined. The results of dry sliding wear tests of different Cr/C ratio show that the wear resistances of the Cr_3 C_2-reinforced coating,respectively,are 13. 4,9. 5,9. 1 and 6. 5 times higher than that of the substrate and the main wear mechanisms of the coatings are adhesion and abrasive wear with slight oxidation. | 何亚楠 宋强 孙康 赵玉桥 崔洪芝 | 2018 | China Welding2018，27，4： | 9 |
| 3 | Differences in dry sliding wear behavior between HVAF-sprayed amorphous steel and crystalline stainless steel coatings显示文摘Dry sliding wear behavior of amorphous steel coating(ASC) and crystalline stainless steel coating(SSC)manufactured by high-velocity-air-fuel-spraying was investigated. With increasing normal load, coefficient of friction(COF) of ASC decreases slightly from 0.78 to 0.69. COF of SSC presents a minor difference under various normal loads but increases with sliding time accompanied by relatively large fluctuation.Such a difference in friction behavior between such two coatings can be understood based upon the roles of shear stress and flash temperature. Wear rate of SSC is much higher than that of ASC, suggesting better wear resistance of ASC. The enhanced wear resistance is correlated with high hardness(H), reduced Young’s modulus(E_r), and ratios of H/Erand H^3/Er^2. Detailed analyses on worn surfaces and sub-surfaces indicate that the wear mechanisms for ASC include delamination, abrasive and oxidation wear, whereas those for SSC are delamination and oxidation. | Hui Guo Suode Zhang Wenhai Sun Jianqiang Wang | 2019 | Journal of Materials Science & Technology2019，35，5： | 6 |
| 4 | The friction and wear characteristics and lubrication mechanism of imidazole phosphate ionic liquid显示文摘Several imidazole phosphate ionic liquids with varying carbon chain length have been synthesized at room temperature.Corrosion characteristics and tribological properties of these synthesized ionic liquids were studied using four-ball friction and wear testing machine.Its lubrication mechanism was also investigated by means of electron microscopy and X-ray photoelectron spectroscopy.The ex-perimental results showed that no corrosion was generated when the imidazole phosphate ionic liquid was applied to steel-steel pair.Meanwhile,the imidazole phosphate showed excellent anti-wear and lubricating performances,its frictional performance was related to the polarity of ionic liquids.It is suggested that the ionic liquids react with friction surface to form a protective film of iron phosphate and result in reduction in friction and wear. | ZHANG Lin FENG DaPeng XU Bin LIU XuQing LIU WeiMin | 2009 | Science China(Technological Sciences)2009，52，5： | 5 |
| 5 | Experimental study ofcasing wear under impact-sliding conditions显示文摘Theoretical analysis and field monitoring show that lateral vibration has very important effect on casing wear in deep & ultra-deep well drilling.The wear mechanism ofcasing under impact-sliding work conditions has been investigated and many experiments have been completed with a newly developed full-scale casing wear test machine.Test results present that adhesion wear,contact fatigue,and grinding abrasion are the main wear mechanisms under impact-sliding test conditions.The friction coefficient and linear wear rate ofthe casing rise obviously with an increase in impact load.And the larger the impact load,the rougher the worn surface ofthe casing.The linear wear rate decreased slightly but the average friction coefficient increased slightly with an increase in impact frequency under an impact load of2,500 N.Both the linear wear rate ofthe casing and the average friction coefficient increased substantially with an increase in impact frequency under an impact load of4,000 N.Under lower impact load conditions,grinding abrasion and contact fatigue are the main mechanisms ofcasing wear;under higher impact load conditions,adhesion wear and contact fatigue are the main mechanisms ofcasing wear. | Shengli Chu Laibin Zhang Jianchun Fan Wenpei Zheng Huiyuan Yu | 2009 | Petroleum Science2009，6，4： | 3 |
| 6 | Wear Mechanism of Cemented Carbide Tool in High Speed Milling of Stainless Steel显示文摘Adhesion of cutting tool and chip often occurs when machining stainless steels with cemented carbide tools. Wear mechanism of cemented carbide tool in high speed milling of stainless steel 0Cr13Ni4 Mo was studied in this work. Machining tests on high speed milling of 0Cr13Ni4 Mo with a cemented carbide tool are conducted. The cutting force and cutting temperature are measured. The wear pattern is recorded and analyzed by high?speed camera, scanning electron microscope(SEM) and energy dispersive X?ray spectroscopy(EDS). It is found that adhesive wear was the dominant wear pattern causing tool failure. The process and microcosmic mechanism of the tool's adhesive wear are analyzed and discussed based on the experimental results. It is shown that adhesive wear of the tool occurs due to the wear of coating, the a nity of elements Fe and Co, and the grinding of workpiece materials to the tool material. The process of adhesive wear includes both microcosmic elements di usion and macroscopic cyclic process of adhe?sion, tearing and fracture. | Guang-Jun Liu Zhao-Cheng Zhou Xin Qian Wei-Hai Pang Guang-Hui Li Guang-Yu Tan | 2018 | Chinese Journal of Mechanical Engineering2018，31，6： | 2 |
| 7 | Experimental Study on Wear Characteristics of PCBN Tool with Variable Chamfered Edge显示文摘Owing to heavy dynamic and thermal loads, PCBN tools are seriously worn during hard cutting, which largely constrains the improvement of their machining performance. Therein, the chamfered structure of a cutting edge has a notable influence on the tool wear. Thus, a comparative study was carried out on the wear morphology and wear mechanism of PCBN tools with either a variable chamfered edge or an invariable chamfered edge. The results indicate that, for a PCBN tool with a variable chamfered edge, the rake wear area is far from the cutting edge and slowly extends toward it. A shallow large-area crater wear occurs on the rake face, and the flank wear area has a long triangular shape with a smaller wear area and width, and the cutting edge remains in a good state during the cutting process. In contrast, for a PCBN tool with an invariable chamfered edge, a deep small-area crater appears on the rake face, and the wear area is close to the cutting edge and quickly extends toward it. Thus, it is easy for chips to accumulate in the crater, resulting in large-area and high-speed wear on the flank face. In addition, the tool shows a weak wear resistance. In the initial wear stage, the rake wear mechanism of the two cutting tools is a mixture of abrasive, oxidation, and other types of wear, whereas their flank wear mechanism is dominated by abrasive wear. With an aggravation of the tool wear, the oxidation and diffusion wear mechanism are both increasingly strengthened. The rake wear of the cutter with a variable chamfered edge showed an obvious increase in the oxidation and diffusion wear, as did the flank wear of the cutter with an invariable chamfered edge. This study revealed the wear mechanism of the PCBN tool with a variable chamfered edge and provided theoretical and technological support for its popularization and application in the machining of high-hardness materials. | Tao Chen Lixing Song Suyan Li Xianli Liu | 2019 | Chinese Journal of Mechanical Engineering2019，32，3： | 2 |
| 8 | Effect of Extrusion Temperatures on Friction-wear Behavior of Chain-wheel Fabricated by 40Cr Steel under Oil-lubrication Condition显示文摘A 40Cr steel was formed into a chain-wheel using a warm extrusion technology. The surface roughness and micro-structure, micro-hardness and phases of the extruded samples at different temperatures were analyzed using a three-dimensional optical microscope (OM), micro-hardness tester, and X-ray diffraction (XRD), respectively. The morphologies, chemical element distributions and phases of worn tracks at the extrusion temperatures of 550, 650 and 750 °C were analyzed using a scanning electron microscopy (SEM), energy disperse spectroscopy (EDS), and XRD, respectively. The friction-wear behaviors of extruded samples under oil-lubrication condition were observed using a wear test. And the effects of extrusion temperatures on the wear mechanism were discussed. The results show that residual austenite and pearlite exist on the sample at the extrusion temperature of 550 °C with the corresponding grain size and surface micro-hardness of 32.7 nm and 370.33 HV, respectively. The average coefficient of friction (COF) of extruded sample at the temperature of 550 °C is 0.196 5, and the wear mechanism is fatigue and abrasive wear. While the acicular martensite exists on the extruded samples at the extrusion temperatures of 650 and 750 °C, the corresponding grain sizes are 30.0 and 29.1 nm, respectively. The average COF (coefficient of friction) of extruded sample at the temperatures of 650 and 750 °C are 0.187 4 and 0.163 6, respectively, and the wear mechanism is abrasive wear. As a result, the friction performance of extruded sample at the temperatures of 650 and 750 °C is better than that at the temperature of 550 °C. | 陈海翔 LIU Wei 孔德军 | 2019 | Journal of Wuhan University of Technology(Materials Science)2019，34，3： | 2 |
| 9 | Quasi-nano wear mechanism under repeated impact contact loading显示文摘A new quasi-nano wear mechanism (QNWM) has been proposed in this paper based on the facts of wear curve turning under high energy impact contact loading.Its characteristic is that the wear rate of QNWM is only 1/10-1/3 that of delamination mechanism at the same energy density.The diameters of wear debris and pits on the worn surfaces fall into the quasi-nanometer scale (about 50-120 nm).The necessary and sufficient conditions,which bring about the QNWM,are:(i) the nano-structure (nano-crystalline + amorphous phase) in impact contact surface layer has formed by the intensive impact strain;(ii) the delamination wear cracking in sub-surface layer must be restrained;(iii) the microcracks of QNWM are produced in amorphous phase of surface nano-structure layer rather than in nano-crystalline. | ZHU JinHua1,REN XiangHong1,2,ZHANG JianJun1,3,XU YunHua1,3 & LU ZhengXin1,4 1 State Key Laboratory for Mechanical Behavior of Materials,Xi’an Jiaotong University,Xi’an 710049,China 2 Xi’an Research Institute of High-tech,Xi’an 710025,China 3 School of Materials Science and Engineering,Xi’an University of Architecture and Technology,Xi’an 710055,China 4 School of Materials Science and Engineering,Xi’an University of Technology,Xi’an 710049,China | 2010 | Science China(Technological Sciences)2010，53，6： | 1 |
| 10 | Effect of Fe_2B boride orientation on abrasion wear resistance of Fe-B cast alloy显示文摘The microstructures and abrasion wear resistance of directional solidification Fe-B alloy have been investigated using optical microscopy, X-ray diffraction, scanning electron microscopy and laser scanning microscopy. The results show that the microstructure of as-cast Fe-B alloy consists of ferrite, pearlite and eutectic boride. After heat treatment, the microstructure is composed of boride and martensite. The plane which is perpendicular to the boride growth direction possesses the highest hardness. In two-body abrasive wear tests, the silicon carbide abrasive can cut the boride and martensite matrix synchronously, and the wear mechanism is micro cutting mechanism. The worn surface roughness and the wear weight loss both increase with the increasing contact load. Moreover, when the boride growth direction is perpendicular to the worn surface, the highest hardness plane of the boride can effectively oppose abrasion, and the martensite matrix can surround and support borides perfectly. | Da-wei Yi Jian-dong Xing Han-guang Fu Zhi-yun Zhang Jin Chen jian-jun Zhang Jian-hong Peng Yu-pu Shi | 2017 | China Foundry2017，14，4： | 1 |
| 11 | Fretting wear resistance mechanism of transferred film from organic high molecular materials | 郭强 温诗铸 罗唯力 | 1996 | Progress in Natural Science:Materials International1996，6，5： | 1 |
| 12 | Influence of carbon content on wear resistance and wear mechanism of Mn13Cr2 and Mn18Cr2 cast steels显示文摘By means of impact abrasion tests, micro-hardness tests, and worn surface morphology observation via SEM, a comparison research based upon different impact abrasive wear conditions was conducted in this research to study the influence of different carbon contents(1.25 wt.%, 1.35 wt.%, and 1.45 wt.%) on the wear resistance and wear mechanism of water-quenched Mn13Cr2 and Mn18Cr2 cast steels. The research results show that the wear resistance of the Mn18Cr2 cast steel is superior to that of the Mn13Cr2 cast steel under the condition of the same carbon content and different impact abrasive wear conditions because the Mn18Cr2 cast steel possesses higher worn work hardening capacity as well as a more desirable combination of high hardness and impact toughness than that of the Mn13Cr2 cast steel. When a 4.5 J impact abrasive load is applied, the wear mechanism of both steels is that plastic deformation fatigue spalling and micro-cutting coexist, and the former dominates. When the carbon content is increased, the worn work hardening effect becomes increasingly dramatic, while the wear resistance of both steels decreases, which implies that an increase in impact toughness is beneficial to improving the wear resistance under severe impact abrasive wear conditions. Under the condition of a 1.0 J impact abrasive load, the wear mechanism of both steels is that plastic deformation fatigue spalling and micro-cutting coexist, and the latter plays a leading role. The worn work hardening effect and wear resistance intensify when the carbon content is increased, which implies that a higher hardness can be conducive to better wear resistance under low impact abrasive condition. | Ding-shan Lu Zhong-yi Liu Wei Li Zhao Liao Hui Tian Jian-zhong Xian | 2015 | China Foundry2015，12，1： | 1 |
| 13 | Dry Sliding Friction and Wear Properties and Wear Mechanism of SiC_P/Al Composites显示文摘Dry sliding friction and wear properties of A356/SiC composites against AISI D2 were analyzed by means of SEM,XRD and EDS.Results indicated that the wear rate of A356/SiC increased with increase of the applied load.Mild wear took place under lower load,transferring to severe wear at the load heavier than 400 N.Mechanical mixed layer(MML) formed on worn surface during dry sliding friction process,whose thickness became deeper with increasing load.Cracks formed easily in MML and spread transversely,resulting in peeling wear.The wear mechanism of the composite is that oxidation wear mechanism was dominant under low load,with the formation of tiny powdery debris.As the load enhanced,peeling wear was primary due to laminar debris detached from the MML,including oxidation and adhesive wear at the same time,with the load at 350-450 N,adhesive wear with irregular debris and peeling wear were predominant. | 金云学 | 2009 | Journal of Wuhan University of Technology(Materials Science)2009，24，S1： | 0 |
| 14 | STUDY ON WEAR AND DESTRUCTION OF HOB IN GEAR HOBBING显示文摘The wear and destruction appearances of hobs are researched. The reasons of the wear and destruction of hobare analyzed. And the influence of the change of the hobbing force and the hobbing temperature on the wear and destruc-tion of hob in gear hobbing is also analyzed. In gear hobbing, the main wear mechanisms are adhesion and ploughingwhen cutting the 20CrMnTi gear using W 18Cr4V high-speed steel hob. | Liu Dawei Research Centre of Vehicle and Traffic Engineering, Qingdao University, Qingdao 266071, ChinaChen Jing Lu Shaofang Jilin University | 2002 | Chinese Journal of Mechanical Engineering2002，15，4： | 0 |
| 15 | Wear behavior of TC11 and AISI M2 in pin-disk tribo-system显示文摘The wear behavior and mechanism of TC11 (pins) and AISI M2 (disks) under different test conditions were studied. The results show that tribo-layers formed on the worn surfaces of both TC11 alloy and AISI M2 steel. As for TC11 alloys at 25℃, the wear rate increased to high values with an increase in the load;and abrasive wear and adhesive wear prevailed. However, at 600℃, the wear rate decreased sharply and oxidative wear prevailed. As for AISI M2 steels, at 25 and 600℃, the wear rates were relatively low. The wear mechanisms at 25 and 600℃ were abrasive wear and oxidative wear, respectively. The wear rates of AISI M2 steel were lower than those of TC11 alloy at 25 and 600 ℃. The wear performance of the tribo-pair was noticed to be closely related to their mutual contact mode except for the test conditions and the pin and disk materials, and the intermittent contact mode reduced wear of AISI M2 steel. | Lan Wang Jing-han Yang Yang Li Jie Song Yun-xue Jin Shu-qi Wang | 2019 | Journal of Iron and Steel Research(International)2019，26，5： | 0 |
| 16 | WEAR PERFORMANCE AND MECHANISM OF ZINC-ALUMINUM(ZA27)ALLOY显示文摘ZA27 alloy has the best performance and the widest applications in high aluminum zinc based die casting alloy series. One of its main applica-tions is used as abrasion resistant alloy,instead of nonferrous alloys such as copper alloy.The frictional wear p | 苏华钦 施忠良 朱鸣芳 | 1995 | Journal of Southeast University(English Edition)1995，11，2： | 0 |
| 17 | Microstructures and wear-resistant properties of in-situ TiC_p/ZA-12 composites显示文摘TiC_p/ZA-12 composites were fabricated by exothermic disposition method process and stirring-casting techniques. The microstructure and wear-resistant properties were investigated . The results show that TiC particles are formed in-situ and distributed uniformly in matrix. No particles aggregation and macro or micro precipitation are observed. The wear-resistant properties of composites increase with the increase of TiC_p content, but will not increase when the TiC_p content reaches constant value. Finally, the friction and wear mechanism were also discussed. | 王香 连晓明 薛晓花 | 2005 | 中国有色金属学会会刊:英文版2005，15，S3： | 0 |
| 18 | Friction behaviour between a laparoscopic grasper and the large intestine during minimally invasive surgery显示文摘Slippage is a common phenomenon between laparoscopic graspers and tissues during minimally invasive surgery,which may lead to inefficient surgical operations,prolonged operation time,and increased patient suffering.The stability factors related to the friction behaviour between laparoscopic graspers and the large intestine,including bio-surface liquids,pulling angle,and surface profile of graspers,were studied.The friction behav-iour at the large intestine-grasper interface was tested using a UMT-II tribometer under the conditions of clamping force of 1-4 N,sliding displacement of 15 mm,and sliding velocity of 2 mm/s to simulate the grasping and pulling operations of soft tissue.The results showed that the bio-surface liquid(serum)of the large intestine significantly decreased the friction coefficient,thus reducing the grasping efficiency.A pulling angle of 15°could generate the peak frictional force and enhance the grasping stability.The frictional force increased with the ratio of the profile surface area of the grasper.These results demonstrate that the grasping stability can be improved by changing either the bio-surface liquid condition or the pulling angle.In addition,a grasper with a larger profile surface area can also prevent slippage due to its significant influence on the pressure distribution and actual contact area for tissue retention. | Yan Guo Chengmo Cai Wei Li | 2022 | Biosurface and Biotribology2022，8，1： | 0 |
| 19 | Abrasion Behaviour of Boronized Layer显示文摘1.IntroductionBoronizing can evidently increase thesurface hardness and wear resistance of me-tallic materials[1].It is simple in technique,not expensive and widely used on tools,diesand some other parts which are easy towear.However the wear mechanism andbehaviour of boronized layer are not clearwhen abraded by mixed abradants such ascoal,hard mineral etc.[2,3].Several metallic materials | 曲敬信 武晓丽 邵荷生 | 1992 | Journal of Materials Science & Technology1992，8，5： | 0 |
| 20 | Preparation and Characterization of Semi-Metal Friction Materials Doping Rare Earths显示文摘In order to study the effects of preparation process on the performance and microstructure of the materials, semi-metal friction materials doping rare earths were produced. Different influencing factors in preparation processes (forming pressure, hot-pressing temperature, etc.) were investigated and the optimum technological parameters were selected. The results showed that preparation processes has correlation with the properties of the materials. The morphology of worn surface was observed by scanning electronic microscope, and the conclusion was drawn that wear mechanisms of the materials were mainly abrasive wear, adhesive wear and fatigue wear. Doping RE in the materials can improve the interfacial bonding among the components of semi-metal friction materials and make the structure of the materials more impact. | 许越 白婧 谢继亮 | 2007 | Journal of Rare Earths2007，25，S1： | 0 |
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