نتایج جستجو برای: relative density and microstructure
تعداد نتایج: 16894759 فیلتر نتایج به سال:
Electrochemical coating processes are significantly affected by applied magnetic fields due to the generation of electromagnetic forces. The present research work has been undertaken to study the effect of coating parameters such as current density and alumina concentration on the characteristics of Ni-Al2O3 composite coating under static magnetic field. Ni-Al2O3 composite coating was applied o...
abstract this study examines the relationship between reading anxiety and difficulty of texts as well as the relationship between reading anxiety and students perceived difficulty of the texts. since difficulty is a relative concept, i limited its definition by sticking to the readability formula. we also took students perceived difficulty levels into account. therefore, in the present study, ...
Zr1−xTixC (x = 0, 0.2, 0.4, 0.6, 0.8, 1) solid solution ceramics were fabricated by flash spark plasma sintering (FSPS). The phase composition, microstructure, and mechanical property of the sintered investigated. results showed that composition plays a key role on densification ceramics. A high relative density (98.6 %) hardness (>20 GPa) was achieved in Zr0.4Ti0.6C. unique in-situ temperature...
High-density fine-grained Ni0.5Zn0.5Fe2O4 ferrite ceramics were synthesized by spark plasma sintering (SPS) in conjunction with high energy ball milling. The precursor powders were milled for 20 h, 40 h, and 60 h, respectively, and the milled powders were all sintered for 5 min at 900 ̊C. All the samples exhibit a single spinel phase. With increasing of the ball milling time, the relative densit...
Let X be a compact Kähler manifold of dimension n. For 1 ⩽ j m , let T closed positive (1,1)-current on whose cohomology class is Kähler. current bi-degree ( p ) with + n . We prove that if … are T-relative full mass intersection, then the non-pluripolar product equal to Dinh–Sibony
magnetic resonance imaging (mri) is a notable medical imaging technique that makes of phenomenon of nuclear magnetic resonance. because of the resolution and the technology being harmless, mri has considered as the most desirable imaging technique in clinical applications. the visual quality of mri plays an important role in accuracy of medical delineations that can be seriously degraded by exi...
Effects of static electropulsing on microstructure and elongation of the ZA 22 alloy were studied by using scanning electron microscopy and transmission electron microscopy techniques. It was found that the current density of electropulsing treatment (EPT) was one of the factors that influenced microstructural changes and dislocation structure in the EPT alloy. The identity of the microstructur...
It is argued in this paper that there are three distinctive physical situations in which the continuum descriptions of crystal plasticity are conceptually different. They are determined by the properties of the random field of dislocation density. One of the cases corresponds to conventional plasticity theory. In this case the system energy possesses the energy density, and a formula for energy...
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