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交变磁场对重力SHS制备复合管微观结构和机械性能的影响(英文)

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Abstract:

将交变磁场引入自蔓延高温合成反应,研究其对Al2O3复合管陶瓷层结构和力学性能的影响。结果表明交变磁场可以促进燃烧反应的进行,随着磁感应强度的增加,α-Al2O3的枝晶尺寸减小,形态逐渐向细小的等轴晶形态过渡。复合管的抗压强度和抗剪强度随着磁感应强度的增加而增加。其中当磁感应强度为0.20T时,抗压强度和抗剪强度分别达418MPa和19.5MPa,比未引入交变磁场前分别提高了19.1%和21.9%。

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