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Synthesis of ZnS nanoparticles by solid-liquid chemical reaction with ZnO and Na2S under ultrasonic SHE Yuan-yuan(佘媛媛)1, 2, YANG Juan(杨 娟)1, QIU Ke-qiang(丘克强)1 1. School of Chemistry and Chemical... nanoparticles. In the method, ZnS nanoparticles were prepared by reaction of ZnO and Na2S in water with ultrasonic radiation at low temperature. The effects of process parameters on the properties......
号:1672-7207(2010)04-1369-05 Experimental study of polymer ultrasonic plastification HU Jian-liang, JIANG Bing-yan, LI Jun, LIN Ming-run, WANG Ren-quan (Key Laboratory of Education Ministry... requirement(homogeneous and no hard spots) of the quality of polymer melt in micro-injection, the experimental research of polymer ultrasonic plastification was carried out on the home-made ultrasonic......
Evaluation of thermal sprayed coating using ultrasonic inspection by means of bottom echo back reflection Toshifumi KUBOHORI, Toru ITO, Wahidullah WAHI, Yasuyuki INUI, Toshiro IKUTA... for thermal spray coating becomes more important. For this purpose, we thinned the thickness of the thermal sprayed coating by abrasion with blasting and used ultrasonic inspection by means of bottom......
simulation model which could reflect the actual flow condition, the influence of ultrasonic frequency and particle size on the ultrasonic propagation was discussed. The relationship between ultrasonic... with uniform oil 表1 超声频率与波长的对应关系 Table 1 Correspondence between ultrasonic frequency and wavelength 从图4可见:当超声波长与分散相粒径相当时,油泡对超声传播有衍射作用和折射作用,两者程度相当；超声主要以三主瓣形式传播,接收传感器信号较强,能够较好地反映超声衰减作用；当超声波......
浸出时间；同时,超声强化氨浸对锌的浸出具有较高选择性. 关键词:低品位氧化锌矿；超声波辐射；氨浸 中图分类号:TB 559；TF 813；TF 803.21 文献标识码:A Influence of ultrasonic irradiation on ammonia leaching of zinc from low... of ultrasonic irradiation on the ammonia leaching of zinc from low-grate oxide zinc ore from Lanping was studied. The results show that the maximum leaching rate of zinc is 69.4% in NH3-NH4Cl-H2O solution......
transducer type ultrasonic motor[J]. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 1993, 40(4): 395-401.[5]Nakamura K, Kurosawa M, Ueha S. Characteristics of a hybrid transducer-type ultrasonic motor[J]. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 1991, 38(3): 188-193.[6]孙合明, 郭辉. 纵扭复合型超声电机预压力和输出扭矩的关系[J]. 摩擦学学报, 2001, 21(1): 51-54.SUN He-min......
) was used to generate ultrasound with fixed frequency of 25 kHZ. The acoustic power was fixed at 400 W and the end face of ultrasonic generator was Ф 0.01 m, which was immersed under liquid surface for 10..., China Central South University Press and Springer-Verlag Berlin Heidelberg 2016 Abstract: Ultrasonic treatment and hydrothermal method were applied in the traditional homogeneous precipitation......
. The ultrasonic system provided a power of 2 kW, and a frequency of 19.5 kHz. The second technique was direct application of ultrasonic vibrations into the molten bath in alumina crucible...Trans. Nonferrous Met. Soc. China 26(2016) 930-937 Production of grain-refined AC7A Al-Mg alloy via solidification in ultrasonic field W. KHALIFA1, Y. TSUNEKAWA2 1. Faculty of Engineering, Cairo......
Relation table of experimental parameters and rheological parameters 表5 超声频率和耙架转速相关性分析 Table 5 Analysis of correlation between frequency of ultrasonic and speed of rake frame 由表5可.... Correlation between frequency offset of backscattered signal and scatterer size of soft tissue in focal region of ultrasonic transducer[J]. Chinese Journal of Biomedical Engineering, 2011, 30(3): 370-376......
