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are improved. Key words: low frequency electromagnetic field; ultrasonic field; Mg alloy; DC casting 1 Introduction Grain refinement is an effective way to improve the workability and strengthening... the grains and the β phase (Mg17Al12) in binary Mg-Al alloy. We studied the effects of the low frequency electromagnetic field and the ultrasonic field on microstructures and properties of the AZ80......
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The Influence of Ultrasonic Frequency on the Properties of Ni-Co Coatings Prepared by Ultrasound-assisted ElectrodepositionMinqi SHENG1,2,Chenkai LV1,Lan HONG1,Mingwang SHAO2,Kang WAN1,Fan LV11... microscopy(SEM).The efects of the ultrasonic frequency on the roughness,hardness and corrosion resistance of the Ni-Co coatings were also investigated.The results indicated that the increase......
displacement that can be used for the ultrasonic motor but the displacement of resonance frequency. Elliptical displacements are generated at off-resonance out of the resonance frequency. Fig.6 shows... of the ultrasonic motor were then determined by verifying displacements in the off-resonance fields. Fig.7 shows displacement changes of W2L11 near mode 3. After verifying the frequency fields, including......
the friction in metal forming processes by superimposing ultrasonic waves [J]. CIRP Annals-Manufacturing Technology, 2001, 50(1): 195–200. (Edited by YANG Hua) 中文导读 超声激励下金属板材摩擦特性 摘要:在金属板材超声辅助拉深工艺中,超声激励在板材与模具间所产生......
and Springer-Verlag Berlin Heidelberg 2011 Abstract: Factors on degradation of chlorothalonil (CLT) in water by high frequency ultrasonic irradiation were investigated. The effects of initial...J. Cent. South Univ. Technol. (2011) 18: 1068-1073 DOI: 10.1007/s11771-011-0805-4 Degradation of chlorothalonil by ultrasonic irradiation: Kinetics and impact factors GUO Hong-guang(郭洪光), GAO Nai......
Motion behavior of non-metallic particles under high frequency magnetic field ZHANG Zhong-tao(张忠涛)1, 2, GUO Qing-tao(郭庆涛)3, YU Feng-yun(于凤云)2, LI Jie(李 捷)1, 2, ZHANG Jian(张 剑)1, 2, LI Ting-ju(李廷... particles in commercial pure aluminum under high frequency magnetic field. At the meantime, multi-pipe experiment was also done to discuss the prospect of continuous elimination of non-metallic particles......
, scatter and absorption attenuation still remain unclear. Investigating the ultrasonic reflection coefficient in frequency domain becomes an important method to evaluate the properties of coatings. Since.... The focusing transducer was used to generate and receive ultrasonic pulses. The diameter of the crystal is 6.4 mm and the nominal frequency is 16 MHz. The observations of waveforms and data sampling were......
. The effective range of high-intensity ultrasonic is limited due to its frequency and swing, and it is weak on the surface of melt. Therefore, in this study, mechanical stirring was used to stir CNTs... Fabrication of carbon nanotubes reinforced AZ91D composites by ultrasonic processing LIU Shi-ying(刘世英)1, 2, GAO Fei-peng(高飞鹏)1, 2, ZHANG Qiong-yuan(张琼元)1, 2, ZHU Xue(朱 雪)1, 2, LI Wen-zhen(李文珍)1......
