研究不同含量Al、Ni的AlxFe Cr Co Ni(1-x)(x=0.2,0.4,0.5,0.6,0.8)多主元高熵合金的组织结构及其对摩擦磨损性能的影响。结果表明:随着x的增加,合金的组织结构由单一的fcc相逐渐转变为单一的bcc相,合金的硬度和磨损性能也随之提高。这...
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研究不同含量Al、Ni的AlxFe Cr Co Ni(1-x)(x=0.2,0.4,0.5,0.6,0.8)多主元高熵合金的组织结构及其对摩擦磨损性能的影响。结果表明:随着x的增加,合金的组织结构由单一的fcc相逐渐转变为单一的bcc相,合金的硬度和磨损性能也随之提高。这主要是因为合金的高熵效应抑制了金属间化合物的形成,从而形成简单的固溶体结构。
Glass-ceramic materials of strontium barium niobate system were prepared through a melt-quenching method. The effects of crystallization temperature on the mierostructure, dielectric property, breakdown strength and e...
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Glass-ceramic materials of strontium barium niobate system were prepared through a melt-quenching method. The effects of crystallization temperature on the mierostructure, dielectric property, breakdown strength and energy storage density of barium strontium niobate glass-ceramics were studied. The crystallization mechanism of the glass-ceramics was discussed and should be one-dimensional interfacial growth. The results indicate that the breakdown strength remarkably increases with the increase of crystallization temperature. The glass-ceramic heat treated at 900 ℃ was found to possess optimal properties with breakdown strength of 1300 kV/cm and energy storage density of 2.8 J/cm3, which is promising dielectric materials for high energy storage density dielectrics.
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