Synthesis of Mono-Sized Fe-Co Based Metallic Glass Particles by Pulsated Orifice Ejection Method

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  • パルス圧力付加オリフィス噴射法による球形単分散 Fe-Co 系金属ガラス粒子の作製
  • パルス アツリョク フカ オリフィス フンシャホウ ニ ヨル キュウケイ タンブンサン Fe Coケイ キンゾク ガラス リュウシ ノ サクセイ

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Abstract

  Metallic glasses are potentially applied for accurate micro parts because of their good formability and transferability as well as high mechanical properties and excellent magnetic properties. So the raw materials that the volume is precisely controlled are needed for a highly accurate processing. In this study, mono-sized spherical particles of Fe-Co-based metallic glass were prepared by Pulsated Orifice Ejection Method (POEM) and the capabilities of their micro-forming process in the glass transition temperature were investigated.<br>    Mono-sized spherical particles of Fe-Co-based metallic glass particles with 200-500 μm of diameter have been obtained by Pulsated Orifice Ejection Method (POEM). The XRD pattern of the particles shows only broad peaks without any crystalline peak. A bright field TEM image of the particles and the selected area diffraction patterns shows only halo patterns that indicate fully amorphous phase. DSC curve shows that supercooled liquid region was ΔT=48 K and a TTT curve can be constructed by isothermal DSC.<br>

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