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J. Cent. South Univ. Technol. (2008) 15(s1): 149-154 DOI: 10.1007/s11771-008-335-x Application of particle trajectory model in 1D planar ejection LIU Kun(刘 坤), BAI Jing-song(柏劲松), LI Ping(李 平.... And numerical simulation was performed on this model with particle trajectory model method. An Eulerian finite volume method was conducted to resolve gas field. And Lagrangian method was imposed to track each......
颗粒分布 Fig. 3 SiC particle distribution of SiCp/Al-Fe-V-Si as-hot pressed 表2 15%SiCp/Al-8.5Fe-1.3V-1.7Si热压后的密度以及相对密度 Table 2 Density and relative density of 15%SiCp/Al-8.5Fe... is 20%-40%. Long axis of SiC particle becomes parallel to rolling direction, pores between SiC particles and the matrix disappear, and density and hardness increase when cumulative reduction is over 40......
J. Cent. South Univ. (2012) 19: 609-614 DOI: 10.1007/s11771-012-1046-x Numerical simulation of particle deposition in obstructive human airways OU Cui-yun(欧翠云), DENG Qi-hong(邓启红), LIU Wei-wei(刘蔚巍... pattern and its impact on particle deposition, finite-volume based computational fluid dynamics (CFD) simulations were conducted in the diseased triple-bifurcation airways. Computations were carried out......
线衍射仪对样品进行相组成分析.结果表明:经1 300 ℃放电等离子烧结15 min后,可以得到纯净的0.9Ti3SiC2-0.1SiC和含有微量石墨的0.2Ti3SiC2-0.8SiC复合材料,0.9Ti3SiC2-0.1SiC和0.2Ti3SiC2-0.8SiC复合材料的显微硬度分别为8.8和10.5 GPa,均明显高于Ti3SiC2的(4 GPa).随着SiC含量的增加,复合材料的硬度也增加,但杂质(石墨)和孔洞的含量也增多,成分为0.5Ti3SiC2-0.5SiC的复合材料在烧结过程中有少量Si流出;而当SiC含量增加到0.2Ti3SiC2-0.8SiC时,烧结过程中大量的Si流出使得复合材料无法成功烧结. 关键词:复合材料;Ti3SiC2;SiC;放电等离子烧结 中图分类号:TG148 文献标志码:A Influence......
Preparation and characterization of pure SiC ceramics by high temperature physical vapor transport induced by seeding with nano SiC particlesYuchen Deng,Yaming Zhang,Nanlong Zhang,Qiang Zhi,Bo Wang...) was employed to grow polycrystalline SiC ceramics with high density and purity, induced by nano SiC particles as seeds. The obtained SiC ceramics were identified as 6 H-SiC with a mainly preferred......
力产生重要的影响. 关键词:SiC/Al复合材料;屈服应力;载荷转移;Weibull统计 中图分类号:TG 111 Model of effects of particle failure on yield stress of SiC reinforced aluminum alloy composites SONG Min, XIE Can-qiang, heyuehai... and Al-Zn-Mg alloy were chosen as the matrix materials to verify the accuracy of the model. The failure of the SiC particles including particle debonding and cracking on the yield stress......
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of the dispersion strengthening of SiC particle, but also because of the grain fining and high density of dislocation in the matrix due to the addition of SiC nanoparticles. A fine dispersion of SiC particles... reinforced by a hybrid of SiC whisker and SiC nanoparticle were fabricated by a squeeze casting route. In the (SiCw+SiCp)/Al composites, the volume fraction of SiC whisker is 20% and that of SiC......
Trans. Nonferrous Met. Soc. China 24(2014) 3922-3928 Wetting behavior of aluminium and filtration with Al2O3 and SiC ceramic foam filters Sarina BAO1, Martin SYVERTSEN1, Anne KVITHYLD1, Thorvald... October 2013; accepted 21 November 2014 Abstract: The wetting behavior between liquid aluminium and substrates made from industrial Al2O3 and SiC based ceramic foam filters (CFF) was investigated......
J. Cent. South Univ. (2021) 28: 1797-1812 DOI: https://doi.org/10.1007/s11771-021-4732-8 Inversion of self-potential anomalies caused by simple polarized bodies based on particle swarm optimization... standard particle swarm optimization (SPSO), and then the searching behavior of the particle swarm is discussed and the change of the particles’ distribution during the iteration process is studied......