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首页> 外文会议>Powder metallurgy world congress amp; exhibition >Modification of Fe and AI Elemental Powders Sintering with Addition of Magnesium and Magnesium Hydrate
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Modification of Fe and AI Elemental Powders Sintering with Addition of Magnesium and Magnesium Hydrate

机译：添加镁和水合镁对铁和铝元素粉末烧结的改性

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摘要

An attempt to modify sintering of iron and aluminium elemental powders with use of small additions of Mg and MgH_2 was presented in this paper. The kinetics of such modified sintering were investigated using DSC technique, XRD analysis and SEM observations. Significant changes in the mechanism of exothermal formation reaction of Fe-AI intermetaliic phases in compositions doped with magnesium and its hydrate was observed. Initiation temperature of Self-propagating High-temperature Synthesis (SHS) reaction was pronouncedly shifted to lower value as compared with undoped composition. Influence of additions on the SHS reaction kinetics parameters was also calculated with use of the JMA model and changes of the Avrami exponent value of specific phase formation was noticed. Positive effect of MgH-2 addition on partial homogeneity of final product was also studied.
机译：本文提出了通过少量添加Mg和MgH_2来改进铁和铝元素粉末烧结的尝试。使用DSC技术，XRD分析和SEM观察研究了这种改性烧结的动力学。在掺杂镁及其水合物的组合物中，Fe-Al金属间相的放热形成反应机理发生了显着变化。与未掺杂的组合物相比，自蔓延高温合成（SHS）反应的起始温度明显降低。还使用JMA模型计算了添加物对SHS反应动力学参数的影响，并且注意到特定相形成的Avrami指数值的变化。还研究了添加MgH-2对最终产品部分同质性的积极影响。

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  • 来源
  • 会议地点 Florence(IT);Florence(IT)
  • 作者

    Michaf Chojnacki; Stanisfaw Jozwiak; Krzysztof Karczewski; Zbigniew Bojar;

  • 作者单位

    Department of Advanced Materials and Technologies, Faculty of Advanced Technologies and Chemistry, Military University of Technology, Gen. S. Kaliskiego 2 St., 00-908 Warsaw, Poland;

    Department of Advanced Materials and Technologies, Faculty of Advanced Technologies and Chemistry, Military University of Technology, Gen. S. Kaliskiego 2 St., 00-908 Warsaw, Poland;

    rnDepartment of Advanced Materials and Technologies, Faculty of Advanced Technologies and Chemistry, Military University of Technology, Gen. S. Kaliskiego 2 St., 00-908 Warsaw, Poland;

    rnDepartment of Advanced Materials and Technologies, Faculty of Advanced Technologies and Chemistry, Military University of Technology, Gen. S. Kaliskiego 2 St., 00-908 Warsaw, Poland;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 粉末冶金（金属陶瓷工艺）;
  • 关键词

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