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成形壓力對(duì)Fe16Al2Cr多孔材料性能的影響
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973-ITER計(jì)劃專項(xiàng)（2010GB113003）


Effect of Pressing Pressure on Performance of Fe16Al2Cr Porous Materials
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    摘要:

    以Fe16Al2Cr預(yù)合金粉末為原料，采用模壓成形、真空燒結(jié)的方法制備了Fe16Al2Cr多孔材料，研究了粉末成形壓力與Fe16Al2Cr多孔材料性能的關(guān)系。結(jié)果表明：小于31 μm的Fe16Al2Cr粉末的壓制成形性能較差，壓坯強(qiáng)度低；燒結(jié)過程中，厚度收縮遠(yuǎn)大于徑向收縮，并隨著成形壓力的增大而減小；在較高的燒結(jié)溫度下，成形壓力和燒結(jié)時(shí)間對(duì)徑向收縮幾乎沒有影響；而孔隙度、最大孔徑和透氣度隨著成形壓力的增大而降低，并隨燒結(jié)時(shí)間延長(zhǎng)而增大；增大成形壓力，延長(zhǎng)燒結(jié)時(shí)間，有利于提高Fe16Al2Cr多孔材料的剪切強(qiáng)度。

    Abstract:

    Fe16Al2Cr porous material was prepared by compression molding, vacuum sintering using Fe16Al2Cr pre-alloy powder as raw material. The relationship between powder pressing pressure and Fe16Al2Cr porous material performance was researched. The results show that Fe16Al2Cr powder less than 31 μm of particles size is poor compaction performance and green body strength. In process of the power sintering, the axial contraction is bigger than radial contraction, and decreased with the pressing pressure increased. Pressing pressure and sintering time is almost no effects the radial shrinkage at higher sintering temperature. The porosity, pore size and permeability of Fe16Al2Cr porous material decrease with pressing pressure increases, and increases with the sintering time prolongation. Increasing pressing pressure and sintering time help to improve the shear strength of Fe16Al2Cr porous materials.

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康新婷,湯慧萍,王建永,遲煜頔,楊保軍,王 建,李亞寧.成形壓力對(duì)Fe16Al2Cr多孔材料性能的影響[J].稀有金屬材料與工程,2011,40(10):1731~1736.[Kang Xinting, Tang Huiping, Wang Jianyong, Chi Yudi, Yang Baojun, Wang Jian, Li Yaning. Effect of Pressing Pressure on Performance of Fe16Al2Cr Porous Materials[J]. Rare Metal Materials and Engineering,2011,40(10):1731~1736.]
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  • 收稿日期:2011-09-25
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