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1.
In order to explore the application of magnetron co-sputtering in fabricating the amorphous alloy, Zr-contained amorphous films were prepared by this technique and investigated by scanning electron microscope, energy disperse spectroscopy and X-ray diffraction. The results show that the co-sputtered films are in fully amorphous state or with amorphous-nanocrystalline structure. The XRD patterns of the Zr-Cu and Zr-Ni amorphous films exhibit a double-peak phenomenon. There is a shift of diffusive peak with changing the sputtering current which is possibly attributed to the change of Zr-Ni and Zr-Cu intermetallic like short range orders. In addition, Zr-Cu-Ni ternary co-sputtered films have a sharper peak at high angle. The sputtering yield of element during co-sputtering ranks as CuNiZr, which can be ascribed to the contribution of melting and boiling temperature, atomic size and electrical conductivity of elements. 相似文献
2.
MA Gui-shengSenior Engineer Comprehensive Reconnaissance Bureau Changjiang Water Resources Commission Wuhan China 《人民长江》2002,(Z1)
1 IntroductionBecauseofthecomplicatedsubsoilprofile ,theleveealongmiddleandlowerreachesofYangtze ,about 36 0 0kmlong ,hasmanyhiddenperils .Amongthedangerouseventsduring 1998’sfloodseasoninthewholevalley ,12 .7%oc curredalongthetrunkstreamdykes,ofwhich 6 98werethemostd… 相似文献
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Wenhui MA Gang XIE Hua WANGFaculty of Materials Metallurgical Engineering Kunming University of Science Technology Kunming China Manuscript received January in revised form May 《材料科学技术学报》2002,18(3):286-287
The thermal expansion behavior of La1-xSrxMn1-yCoyO3-δ (x=0.2-0.4, y=0.1-0.3) perovskites in air has been investigated. The average linear thermal expansion coefficients increased with increasing Sr content up to 40 mole fraction or Co content up to 30 mole fraction. The expansion is generally attributed to an increase in the average cation radius as some of the cations in the perovskite are reduced in valence when oxygen ions are removed from the structure. 相似文献
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GUO Rui MA Hong YAN Yu-feng BAI Su-ping 《半导体光子学与技术》2007,13(3):235-237
The purpose of this development is to detect the parallelism between the breech horizontal platform and the datum tube axis of the rocket artillery. The located aiming mechanism at the muzzle and located adjustment mechanism at the breech are designed in the system. Besides those, the system also uses an autocollimator with accuracy of 1″ and a collimating mirror together to determine the axis of the datum tube. An electronic level with accuracy of 2″ is employed to measure and display the value of the included angle and the parameter of the inclined direction. The entire accuracy of this system is σ≤± 9.1″. This paper describes the composition and the operating principle of the system and analyzes the accuracy. The development of this system supplies reliable measurement method for new rocket artilleries and artilleries, and this technology is of a good application prospect. 相似文献
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LIU Guangzhen MA Zhanfang SHEN Jianquan 《武汉理工大学学报(材料科学英文版)》2006,21(4):16-18
1 IntroductionGold nanoparticles have attracted considerable atten-tionin manyfields duetotheir some special properties al-though goldis very popularfor beingchemicallyinert[1-3].For example ,gold nanoparticles as amplificationtags havebeenthe subject of research directed at gene analysis[4]and antibody or antigen detection[5-7]due to the large di-electric constant ,ease of preparation,andits biocompati-bility[8].Nanoparticles in the range of 1-10 nmin diameterwould display electronic structur… 相似文献
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LIANG Jun MA Zhong-yu 《中国原子能科学研究院年报》2006,(1):64-64
Nuclear matter incompressibility is discussed by the framework of a fully consistent relativistic random phase monopole compression modes in nuclei in the approximation, based on effective Lagrangians with a mixed isoscalar-isovector nonlinear coupling term. A predicted value of the matter incompressibility coefficient is given by comparison between experimental and calculated energies of the isoscalar giant monopole resonance (ISGMR) in nuclei ^208Pb, ^144Sm, ^116Sn and ^90Zr. 相似文献
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