Porous Graded Materials by Stacked Metal Powder Hot-Press Moulding
Porous Graded Materials by Stacked Metal Powder Hot-Press Moulding
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DOI：
10.4028/www.scientific.net/msf.492-493.765
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发表时间：
2005-04
期刊：
影响因子：
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通讯作者：
K. Nishiyabu;S. Matsuzaki;K. Okubo;M. Ishida;Shigeo M. Tanaka
中科院分区：
文献类型：
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作者：
K. Nishiyabu;S. Matsuzaki;K. Okubo;M. Ishida;Shigeo M. Tanaka
将“粉末空间保持器法”应用于金属粉末注射成型工艺，开发出具有微米级多孔结构的金属部件的生产方法。在这项研究中，采用共烧结工艺来制造具有微孔分级结构的烧结金属板。为了简化，通过热压成型制备了具有不同空间保持颗粒含量的生坯片材。通过改变共烧结过程中的堆叠顺序，获得五层对称结构的金属，其中表层由高密度金属形成，芯部由开孔或闭孔结构形成，或具有反对称结构。比较了普通均质多孔结构和多孔梯度结构材料的力学性能。证明了所提出的制备具有微孔分级结构金属部件的方法的有效性以及分级结构对于弥补多孔金属机械性能缺陷的有效性。
The production method for metal components with micro sized porous structure has been developed by applying “powder space holder method” to metal powder injection molding process. In this study, a co-sintering process was utilized to make a plate of sintered metal with micro porous graded structure. The green compact sheets with various contents of space hold particles were prepared by hot press molding for simplification. The five layers of metal with symmetric structure, which the skin layer was formed with high density metal and the core was formed with open or closed porous structure, or with inverse symmetry, was obtained by changing stacking sequence in co-sintering process. Mechanical properties of the materials with plain homogeneous porous structure and porous graded structure were compared. The usefulness of proposed method for producing the metal components with micro porous graded structure and the effective of graded structure to compensate the deficiencies on the mechanical property of porous metals was shown.