By analyzing the time evolution of artificial plasma cloud in the high altitude of atmospheric environment, we found that there are two zones, an exponential attenuation zone and a linearly attenuating zone, existing ...By analyzing the time evolution of artificial plasma cloud in the high altitude of atmospheric environment, we found that there are two zones, an exponential attenuation zone and a linearly attenuating zone, existing in the spatial distribution of electron density of the artificial plasma clouds. The plasma generator's particle flux density only contributes to the exponential attenuation zone, and has no effect on the linear attenuation zone The average electron density in the linear attenuation zone is about 10-5 of neutral particle density, and can diffuse over a wider area. The conclusion will supply some valuable references to the research of electromagnetic wave and artificial plasma interaction, the plasma invisibleness research of missile and special aerocraft, and the design of artificial plasma source.展开更多
Artificial bone powder is satisfactorily deposited onto the surface of synthetic metal arthrosis(Co-Cr-Mo) with plasma spraying process. Factors influencing the quality of coating are investigated. Bond of artificial ...Artificial bone powder is satisfactorily deposited onto the surface of synthetic metal arthrosis(Co-Cr-Mo) with plasma spraying process. Factors influencing the quality of coating are investigated. Bond of artificial bone powder coating sprayed with different parameters is measured. and the coatings are anlyzed with metallographic examination and electron probe analysis. Experiments show that artificial bone powder coating sprayed onto synthetic metal arthrosis with satisfactory bond strength can be obtained by manipulating plasma spraying.展开更多
基金The project supported by the National Nature Science Foundation of China(No.10135020)and 863 National High Technology Program on Inertial Confinement Fusion of China
文摘By analyzing the time evolution of artificial plasma cloud in the high altitude of atmospheric environment, we found that there are two zones, an exponential attenuation zone and a linearly attenuating zone, existing in the spatial distribution of electron density of the artificial plasma clouds. The plasma generator's particle flux density only contributes to the exponential attenuation zone, and has no effect on the linear attenuation zone The average electron density in the linear attenuation zone is about 10-5 of neutral particle density, and can diffuse over a wider area. The conclusion will supply some valuable references to the research of electromagnetic wave and artificial plasma interaction, the plasma invisibleness research of missile and special aerocraft, and the design of artificial plasma source.
文摘Artificial bone powder is satisfactorily deposited onto the surface of synthetic metal arthrosis(Co-Cr-Mo) with plasma spraying process. Factors influencing the quality of coating are investigated. Bond of artificial bone powder coating sprayed with different parameters is measured. and the coatings are anlyzed with metallographic examination and electron probe analysis. Experiments show that artificial bone powder coating sprayed onto synthetic metal arthrosis with satisfactory bond strength can be obtained by manipulating plasma spraying.
