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[36].在Ni表面喷Au,不仅可以防止Ni氧化,还有利于熔融钎料的润湿铺展[34].在Ni/Au层间镀Pd能够抑制Ni对Au的置换作用,在提高了焊点可靠性的同时也满足了引脚间距减小的需求,因而具有比ENIG更为广阔的应用前景. 向铜基板中添加8%Zn或微量稀土元素Er能够有效细化焊点界面,保证焊点的可靠性[37-38].轧制基板内部存在应力时,Cu原子倾向于从基板扩散至钎料中以降低晶格压力.钎焊前对......
H N, YODA S. Hydrothermal synthesis and characterization of rare earth doped yttrium aluminium perovskite-R: YAlO3(R=Nd, Eu and Er) [J]. J Alloy Compd, 2013, 552: 382-386. DOI: 10.1016/j.jallcom.2012.......
York, USA: IEEE, 2012. DOI: 10.1109/ICPHM.2012.6299544. [50] PAN Yong-ping, ER M J, LI Xiang, YU Hao-yong, GOURIVEAU R. Machine health condition prediction via online dynamic fuzzy neural networks [J......
, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu) alloy systems[J]. Acta Biomaterialia, 2020, 102(15): 508-528. [35] HUANG G X, ZHANG L G, JIA B, et al. Thermodynamic assessment of the Ag-Nd......
Symposium (International) on Combustion. Pittsburgh, PA: The Combustion Institute, 1981: 369-384. [46] Coltrin M E, Kee R J, Evans G H. A mathematical model of the fluid mechanics and gas-phase......
diversity of hydrothermal fluid ecosystem on the east Pacific Ocean ridge[J]. Journal of Oceanography In Taiwan Strait, 2008, 27(3): 271-277. [30] Llobet-Brossa E, RosseUo-Morn R, Amman R. Microbial......
. Additionally, the hole diameter from the upper side through the bottom was less steady with dry and conventional cooling than with through-spindle cooling. Cooling with through-spindle cutting fluid......
-critical fluids[J]. Physical Review A: General Physics, 1980, 21: 948-958. [26] PATANKAR S V. Numerical heat transfer and fluid flow[M]. Washington, DC: Hemisphere, 1980. [27] ROBSON J D, PRANGNELL P B......
conditions. TAN et al [34] established a dynamic friction model by combining solid mechanics and viscosity of fluid mechanics. In this model Coulomb friction model and the definition expression of viscosity......
Shengrong, LU Jing, et al. H, O, He, Ar isotope compositions of fluid inclusions for tracing the source of ore-forming fluids of Jinchiling gold deposit, northwest Jiaodong area[J]. Journal of Mineralogy......