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on the stress in the carbon nanotube/Fe3Al composites were performed. The biphase interface valence electron structure was established on the basis of Pauling’s nature of the chemical bond. The stress occurs by the huge interface electron density difference, which will block the Fe3Al grain agglomeration and growth. With the X-ray diffractions, the calculated magnitude of compressive stress existing......
Diffusion Bonding of Ti-6Al-4V to QAl 10-3-1.5 with Ni/Cu InterlayersWei GUO, Xihua ZHAO, Minxia SONG, Jicai FENG and Biao YANG Key Laboratory of Automobile Materials (Jilin University), Ministry..., Harbin 150001, China摘 要:<正>Ti-6Al-4V and QAl 10-3-1.5 diffusion bonding has been carried out with Ni/Cu interlayers. The diffusion-bonded joints......
with a large bonding area by the diffusion bonding. However, it requires surface treatment, long bonding time and larger equipment for bonding larger parts. Because of a very sharp interface, a larger..., leading to a lower bonding strength between ceramic and filler alloy. In this case, cracks will initiate within the Si3N4 ceramic adjacent to the brazing seam and then propagate towards the interface......
is adhered on the Cu side after the heat treatment. All above illustrate that heat treatment can improve the strength of the bonding interface of Invar/Cu clad strips. Key words: twin-roll casting; Invar/Cu clad strip; heat treatment; bonding interface; bonding strength 1 Introduction As structural and functional materials, bimetal clad strips are capable of combining the properties of dissimilar......
reinforcement reticular in three dimensions, but also the struts of foam keep the network structure, which ensures that the Ni foam/Mg composites are double interpenetrating. The interface bonding... unique properties. Key words: pressureless infiltration; nickel foam; double interpenetrating composites; interface bonding; fractograph 1 Introduction Magnesium, with a low density of 1.7 g/cm3......
of the bonding interface, a gray discolored region was observed on the bonding interface, and the center of the region was dark gray. After the micro-examination of the bonding interface, base metal made some... speed of 3 000 r/min and upset pressure of 63.6 MPa showed a very good joint. Key words: friction welding; hybrid aluminum composite; bonding interface; joining efficiency; metal matrix composite 1......
in intermediate layer A4045 aluminum alloy and a series of physical metallurgical behaviors like TLP jointing process on the bonding interface. The interface of two types of core materials gains good bonding... intermediate materials.
Key words: bonding; TLP joining; intermediate layer; diffusion; interface
various surface pre-treating methods. The surface and cross-sectional morphologies of HA coatings were observed by SEM, as well as the bonding strength between coatings and substrates after different pre... the bonding strength reaches (58±5)MPa, higher than that of the clinically used HA coatings on Ti-alloys produced via plasma spray route, as well as a HA coating with full crystallinity and high phase......Hydroxyapatite coating on pretreated CoNiCrMo prosthesis
来源： 《中国有色金属学报(英文版)2005年第6期》——汪涛 A. Dorner-Reisel
Cross section morphologies of Al2O3-13%TiO2 coating/micro-porous bonding layer 图3 陶瓷层与粘结层界面高倍微观形貌,局部高倍SEM,陶瓷层的XRD谱及陶瓷层与粘结层界面线元素扫描分析曲线 Fig.3 High morphology of interface of ceramic layer and micro-porous bonding layer(a), local high magnification SEM image in Fig.3(a) of graph(b), XRD patterns of ceramic layer(c) and line scan of interface of ceramic layer and bonding layer(d) 图4......
strength were studied by optical microscope, scanning electron microscope and electron-tensile tester. The results show that the bonding interface of composite materials is tight when deformation rate...-structure of Cu layer is isometric crystal. The grain size is increased from the interface to the surface, and unevenly distributed. The mechanism of bonding is typically split bonding and mechanical......
