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SPS工藝對GNFs/Al復(fù)合材料界面特征及力學(xué)性能的影響
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北京航空材料研究院石墨烯及應(yīng)用研究中心

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北京航空材料研究院創(chuàng)新基金


Effect of SPS Process on Interface Characteristic and Mechanical Properties of Graphene Nanoflakes Reinforced Aluminum Matrix Composites
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Research Center of Graphene Applications,Beijing Institute of Aeronautical Materials

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    摘要:

    利用放電等離子燒結(jié)(SPS)技術(shù)在不同溫度及保溫時間條件下制備了石墨烯/鋁基復(fù)合材料,并對其微觀組織及拉伸力學(xué)性能進(jìn)行分析。結(jié)果表明,通過改變SPS工藝可調(diào)控石墨烯/鋁的界面特征,進(jìn)而影響復(fù)合材料的力學(xué)性能。500℃燒結(jié)時,石墨烯/鋁界面反應(yīng)雖被抑制,但界面結(jié)合力較弱,復(fù)合材料強(qiáng)度低；燒結(jié)溫度提高到560℃時,界面結(jié)合力明顯增強(qiáng),且通過短時快速燒結(jié)可有效控制界面反應(yīng)的發(fā)生,使復(fù)合材料力學(xué)性能明顯提高。此外,石墨烯納米片還可抑制鋁基體晶粒隨燒結(jié)溫度升高而長大。

    Abstract:

    Graphene nanosheets (GNFs) reinforced aluminum composites were fabricated by spark plasma sintering (SPS) with different temperature and holding time. The microstructure and tensile properties of the composites were prepared and analyzed. Results show that the SPS process affects the mechanical properties of the composites by regulating the characteristic of GNFs/Al interface. When sintering at 500℃, the interfacial reaction of GNFs/Al is inhibited, but the interface bonding of graphene/aluminum is weak, which result in the low mechanical properties of the composite. When sintering temperature is increased to 560℃, the mechanical properties of composite significantly improved, which result from the GNFs/Al interface bonding force is obviously enhanced and the interface reactions is effectively control by rapid sintering. In addition, GNFs can also inhibit the coarsen of aluminum matrix grain with the sintering temperature increases.

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趙雙贊,燕紹九,陳翔,洪起虎,李秀輝,戴圣龍. SPS工藝對GNFs/Al復(fù)合材料界面特征及力學(xué)性能的影響[J].稀有金屬材料與工程,2019,48(2):632~637.[Zhao Shuangzan, Yan Shaojiu, Chen Xiang, Hong Qihu, Li Xiuhui, Dai Shenglong. Effect of SPS Process on Interface Characteristic and Mechanical Properties of Graphene Nanoflakes Reinforced Aluminum Matrix Composites[J]. Rare Metal Materials and Engineering,2019,48(2):632~637.]
DOI：10.12442/j. issn.1002-185X.20170545

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  • 收稿日期:2017-06-22
  • 最后修改日期:2017-09-06
  • 錄用日期:2017-09-12
  • 在線發(fā)布日期: 2019-03-15
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