Effect of powder oxidation on interparticle boundaries and mechanical properties of bulk Al prepared by spark plasma sintering of Al powder
Effect of powder oxidation on interparticle boundaries and mechanical properties of bulk Al prepared by spark plasma sintering of Al powder
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DOI：
10.1016/j.msea.2018.11.024
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发表时间：
2019-01
期刊：
影响因子：
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通讯作者：
Lei Cao;Weizhen Zeng;Yuehuang Xie;Jiamiao Liang;Deliang Zhang;Deliang Zhang
中科院分区：
文献类型：
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作者：
Lei Cao;Weizhen Zeng;Yuehuang Xie;Jiamiao Liang;Deliang Zhang;Deliang Zhang
在放电等离子烧结制备的块体Al中，雾化Al粉的氧化阻止了颗粒间边界向γ-Al 2 O3纳米颗粒修饰的晶界转变，并导致颗粒间边界处形成连续的γ-Al 2 O3纳米孔层，导致断裂伸长率显著降低。
Oxidation of an as-gas atomized Al powder prevents the transformation of interparticle boundaries (IPBs) into γ-Al2O3nanoparticle-decorated grain boundaries in the bulk Al prepared by spark plasma sintering, and leads to formation of continuous γ-Al2O3layers with nanopores at the IPBs, causing a dramatic decrease of the elongation to fracture.