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by the carbon fiber sized with the polymer films of phenol, m-phenylenediamine or acrylic acid, which was electropolymerized by cyclic voltammetry or chronopotentiometry. The contact angles... on the surface free energy of the carbon fiber after sizing by the electropolymerization. Compared with the unsized carbon fiber, which has 85.6°of contact angle of water,52.2° of contact angle of diiodomethane......
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Effect of flank angle and friction coefficient on contact stress of turbine rotorWU Xiao-zan(伍晓赞), TAO Qing-bin(陶庆斌), CHEN An-ping(陈安平), XU Hui(徐慧)(1. School of Physics Science and Technology... in aeroengine, based on the ANSYS, the simplification model of the turbine rotor was built up. By applying the simplification model, the contact stress of turbine rotor was computed. The maximum contact......
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of the contact stresses, we assume that the normal reaction of the elastic foundation follows the Winkler’s hypotheses. 2.1 General mechanical description It is postulated that the thin strip metals... parts according to its deformation and contact with the punch and the elastic foundation, especially an elastic-plastic part was considered in the deflection of the thin strip. Analytical solutions were......
to obtain defect-free surface. Elastic contact condition between nanoparticle and quartz glass surface is confirmed from the Hertz contact theory model. Atoms on the quartz glass surface are removed by chemical bond generated by impact reaction in the elastic mode, so no defects are generated without mechanical process. Experiment was conducted on a numerically controlled system for nanoparticle jet......
Microstructure and interface reaction of investment casting TiAl alloys CHEN Yu-yong(陈玉勇), XIAO Shu-long(肖树龙), KONG Fan-tao(孔凡涛), WANG Xue(王 雪) National Key Laboratory for Precision Hot... the microstructure of TiAl alloy and TiAl-mould reaction between TiAl and ceramic mould shells prepared with the low cost binder in investment casting, the ceramic mould shells were prepared with low cost......
volatilize on the liquid droplet surface and destroy the new aluminium oxide on droplet surface, adding Mg in aluminium can reduce the contact angle of aluminium on fly ash and improve the wettability. SiO2... the aluminum oxide becomes weak gradually, then growth speed of aluminum oxide layer on surface becomes quick with the weakening of reaction of SiO2, Fe2O3 and aluminium, then the reactivity wetting......