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Effect of different incidence angles on bonding performance in cold spraying LI Gang(李 刚)1, WANG Xiao-fang(王晓放)1, LI Wen-ya(李文亚)2 1. School of Energy and Power Engineering, Dalian University... of particle on the deformation of particle and substrate was examined. It is found that the contact area between the deformed particle and substrate decreases and the crater depth in the substrate......
Effect of Open Porosity of Y2O3 Ceramic on the Apparent Contact Angles and Interactions Between Ti47Al Alloys and Y2O3 CeramicChao Ran1,2,Hua-rui Zhang1,2,Hu Zhang1,2,Bei-bei Wan1,2,Peng Bai1,21..., the final equilibrium contact angles increased from 55.8° to 63.6°. The microstructure observations revealed that with increasing the open porosity of the Y2O3 substrates, the thickness of sand adhesion......
the ceramic surface in water. Key words: functional ceramic; physicochemical property; easy-cleaning property; surface free energy; polar shares; disperse shares; contact angles 1 Introduction Self... on the ceramic surface. The balance could be broken only given a little outer disturbance such as shaking. Tables 2 and 3 show the contact angles(CA) changes of oil droplet and remaining oil on ceramic......
J. Cent. South Univ. (2017) 24: 2306-2313 DOI: https://doi.org/10.1007/s11771-017-3642-2 Rock fragmentation under different installation polar angles of TBM disc cutters CHENG Yong-liang(程永亮)1, 2... with different polar angles. This causes the cutting depth difference between adjacent disc cutters on the tunnel face. A rock-cutting model was established to study the rock fragmentation law between......
J. Cent. South Univ. (2019) 26: 2393-2403 DOI: https://doi.org/10.1007/s11771-019-4182-8 Distribution of contact loads in crushed zone between tunnel boring machine disc cutter and rock SHI Yu-peng... determined by the service life of cutting tools, which is the result of contact loads in the crushed zone between cutter ring and rock. In this paper, a series of rock breaking tests were conducted......
in the coatings was analyzed. The contact angles of pure water drops on the surfaces of various fluoro-monomer homopolymers and interpolymers were measured. The relation of coatings'' fluoro-content... coatings is relative few, their surface energy is really low due to the enrichment of fluoro-chains on the surfaces. 关键词:fluoro-acrylic resin; contact angle; surface energy; coating; [全文内容正在添加中] ......
that the solid surface is smooth, homogenous, inert, non-porous and nondeformable which is usually not met by real surfaces [11-12]. Previous studies showed that the contact angles are usually preferred for flotation systems because these contact angles are supposed to correlate much better with flotation response [13-14]. The natural hydrophobicity of pyrrhotite was examined in air from pH 3.0 to pH......
hydrophobic aluminum fins with contact angles within the range of 90°–160° were prepared, and the frosting and defrosting characteristics of fin surfaces were studied. The results show that the condensed droplets are observed later on the fin with bigger contact angle, which shows obvious resistance in condensation. The forms of the frost crystals are similar on four hydrophobic fins while the differences......
of aluminium. The contact angles of molten aluminium on alumina, SiC and graphite were measured under 10-8 bar high vacuum in the temperature range of 1000-1300 ℃. To describe the wetting behaviour of the Al on ceramic at lower temperatures used in filtration and casting aluminium, a semi-empirical calculation was employed. The calculated contact angles at 700 ℃ were around 97° for alumina, 92° for vitreous......
齿轮;接触疲劳寿命 中图分类号:TH114 文献标志码:A 文章编号:1672-7207(2014)12-4187-07 Contact fatigue life on spur gear... states. Accurate numerical solutions of elastohydrodynamic lubrication oil film pressure in different meshing states were obtained. Oil film pressure was converted to gear contact stress by finite......