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) Abstract: The work hardening rate of pure tantalum was studied by tension test, optical microscope and TEM. The results show that the work hardening rate of pure tantalum is low. TEM analysis indicates......
are investigated by triaxial compression and seepage test. The testing results indicate that the influence of electric field on oxygen seepage properties in dump is obvious. The seepage velocity of oxygen under......
Feng-zhen, ZUO Feng (College of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150040, China) Abstract: According to the basic test and calculation for copper......
was studied by means of immersion corrosion, salt spray corrosion and electrochemistry test. The results of immersion tests show that the rate of mass loss is depressed from 2.76 to 1.39mg/(h·cm2) when... corrosion test Mulazimoglu等[10]研究认为, 在6000系铝合金中, 存在β, α两种AlFeSi相, 它们在均匀化过程中实际上是不溶解的. 合金中加入Sr, 可将β(Al5FeSi)相转变为α(Al8Fe2Si)相. β-AlFeSi属单斜晶. 呈粗大针状或片状, 性脆, 对合金性能非常有害, 挤压和加工中易引起裂纹, 降低材料的强度和延展性, 并影响表面粗糙度. α......
is significant to the application of porous Al. The results show that the main infiltration parameters can be selected by orthogonal test, which will modify the porosity gradient variation of porous Al......
and Engineering, Central South University, Changsha 410083, China) Abstract: NiCrAlY coating was deposited on Ti6Al4V substrate by arc ion plating (AIP). OM, SEM, EDS, XRD analysis, microhardness test were......
were studied by using tensile test, metallography-energy spectrum and XRD analysis techniques. The results show the new white copper tubes accord with national standard GB/T8890-1998. It can be found......
University, Changsha 410083, China) Abstract: The uniaxial compression test was carried out on the Geeble1 500 simulator at 100 ℃ with the strain rate of 10-3 s-1 to analyze the compression behavior......
with spherical shape and average size of 25nm were produced by combining the chemical reduction method with supercritical fluid drying technique. The optimum process conditions selected by test was found......
electron microscopy(SEM) and electron dispersion X-ray spectroscopy(EDXS) and wear test. The results show that inter-diffusion zone is found at the interface of YT758/CuZnNi, which promises... of the flux is 76%-79%H3NO3, 16%-18%Na3B4O7 and AlPO3 balance(mass fraction). Table 1 Composition and mechanical performance of hardmetal 2.2 Oxidation test Oxidation tests......