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您的检索式：作者名="FENGZhijing"
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| 1 | Surface roughness and removal rate in magnetorheological finishing of a subsurface damage free surface显示文摘Based on computer-controlled optical surfacing, a new technique called magnetorheological finishing (MRF), is presented. The new technique combines the features of conventional loose abrasive machining with a wheel shaped polishing tool. The tool incorporates a host of features and has unprecedented fabricating versatility. The pre-polishing and fine polishing processes can be performed only by adjusting different parameters. The material removal function is studied theoretically and the results of simulation present a Gaussian distribution feature. Based on the established theoretical model, material removal rate experiments involving a parabolic mirror are designed and carried out to determine the effect of controllable parameters on size of the gap between the workpiece and the polishing wheel, rotating speed of the polishing wheel, concentration of volume fraction of non-magnetic particles and polishing time. Further experiments are carried out on the surface microstructure of the workpiece, the final surface roughness with an initial value of 10.98 nm reaches 1.22 nm root mean square (RMS) after 20 min of polishing. The subsurface damage experiment and the atomic force microscopy (AFM) measurement on the polished surface can also verify the feasibility of the MRF technique. | CHENGHaobo WANGYingwei FENGZhijing CHENGKai | 2005 | Progress in Natural Science:Materials International2005，15，6： | 4 |
| 2 | Magnetic Bingham fluid-assisted deterministic polishing for super-smooth surfaces显示文摘The characteristics of magnetorheological fin- ishing (MRF) technique such as the behavior of magnetic particles and the magnetic field distribution have been inves- tigated. Based on the established theoretical model, material removal function and removal rate experiments involving a K9 glass mirror are designed and carried out. Further experiments are carried out to improve the surface roughness of the workpiece. The final surface roughness with an initial value of 17.58 nm reached 0.4351 nm rms after 35 min of deterministic MRF, and the AFM measurements on microstructures of the polished surface are also improved by 0.445 nm rms without obvious defects. | CHENGHaobo FENGZhijing WANGYingwei LEIShuting | 2005 | Chinese Science Bulletin2005，50，2： | 3 |
| 3 | DISPERSION OF NANODIAMOND IN AQUEOUS SYSTEM显示文摘The effect of Chemical Mechanical Modification (CMM) and dispersants on the ζ potential of nanodiamond particles in aqueous system and the influence of the ultrasonic or shearing techniques on its size distribution were studied CMM and the addition of dispersants AD 2 and AD 8 improve the stability of its suspension With ultrasonic time prolonged, the mean average size of nanodiamond decreases, while with the prolongation of shearing time, its mean size decreases first, then increases a little In the speed range used, the mean size decreases with the rising speed If the whole ultrasonic time kept constant, it is better to add the dispersants before | ZhuYongwei XuXiangyang WangBaichun ShenXiangqian: FengZhijing | 2003 | 金刚石与磨料磨具工程2003，23，4： | 1 |
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