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a solid foundation to investigate the oxidation performance and microstructure of diesel soot during the thermal ageing process. To sum up, the mechanism of soot oxidation under the thermal ageing.... The above parameters are automatically recorded by the TGA. Since oxidation of soot by oxygen is a solid-gas reaction, the chemical reaction mainly occurs on the active sites of the surface of soot......
and solid mass percentage on binding strength of SSB-CPB 2.2.4 超细尾砂含量的影响 超细尾砂含量对充填体的影响显著,通过添加+1~-3 mm粗分级尾砂部分取代全尾砂来模拟不同-200目细尾砂含量对充填体强度的影响如图10.可知SSB-CPB的固化强度随着尾砂中超细含量增加而近似线性下降,这主要是超细颗粒越多,絮凝沉降作用加......
is a solid material and does not have the fluidity of the fluid. It cannot flow inside the fracture with the fracture propagation. Therefore, there is no "water-wedge effect" that can cause a stress......
for the large hadron collider[J]. Thin Solid Films, 2006, 515(2): 382-388. [39] BENVENUTI C, CHIGGIATO P, CICOIRA F, et al. Nonevaporable getter films for ultrahigh vacuum applications[J]. Journal of Vacuum......
]. Journal of Alloys and Compounds, 2002, 334(1/2): 224-227. [58] LEE T Y, CHOI W, TU K N, JANG J W, KUO S M, LIN J K, FREAR D R, ZENG K, KIVILAHTI J K. Morphology, kinetics and thermodynamics of solid..., 1998, 27(12): 1367-1371. [104] OLIVER W C, NIX W D. High temperature deformation of oxide dispersion strengthened Al and Al-Mg solid solutions[J]. Acta Metallurgica, 1982, 30(7): 1335-1347. [105] PEI M......
. Influence of ceramic reinforcements on the wettability and mechanical properties of novel lead-free solder composites[J]. Thin Solid Films, 2006, 504(1/2): 401-404. [58] 韩永典. Ni涂层碳纳米管增强Sn-Ag-Cu无铅钎料的可靠性研... joint microstructure, IMC and strength[J]. Thin Solid Films, 462/463: 370-375. [111] 肖克来提, 杜黎光, 孙志国, 等. SnAgCu表面贴装焊点在时效和热循环过程中的组织及剪切强度变化[J]. 金属学报, 2001, 37(4): 439-444. SHAWKRET Ahat, DU Liguang, SUN......
of reinforcement phase 1.2 热导率的设计 热导率是电子封装材料的另一个重要的性能参数.对于不同材料,其传热机制各不相同,对绝缘体来说,传热机制主要是声子导热；对纯金属来说,电子导热是主要的传热机制；在合金中除了电子导热以外,晶格导热也起一定的作用.在复合材料中,导热便由基体与增强相共同决定.若能先对复合材料的热导率进行理论预测,确定增强相性质,体积分数,尺寸,界面状态,再进行实验研... 复合材料的TC随增强相含量的变化 Fig. 3 Evolution of CTE with volume fraction of reinforcement phase 研究可知[27-28, 31],影响复合材料的导热性能的因素很多,除增强相体积分数,颗粒尺寸与形状,基体合金及界面等因素外,热处理,复合材料的致密度等因素也会对复合材料的热导率产生影响.采用以上理论模型预......
2015; accepted 17 February 2016 Abstract: Friction stir welding is the preferred joining method for aluminium matrix composites. It is a solid-state process which prevents the formation..., to different extent, in the degradation of mechanical properties. Friction stir welding (FSW) is considered as a prospective joining process to solve this problem. As a solid-state joining process, FSW......
the asymptotic steady-state. Further, it is noticed that for small interval of time, the effect of heat transfer is conquered by conduction (t<<1). Consequently, there arises a time phase where... in Figure 5(a) with Da fixed and β varied. Also, it is remarked that as the Da rises the temperature decreases. The decrease in presence of "solid fibers in the porous medium" with higher permeability (i.e.......
(l): 393-395.HUANG Xiao-wei. Mechanism of densification for alumina ceramic prepared by liquid phase sintering [J]. Materials Review, 2005, 19(l): 393-395. [20] 张锡平, 陈树江, 李国华, 薛文东, 孙加林. 纳米TiO2添加剂对......
