2涂層;7075鋁合金;復(fù)合材料"/> 2）來優(yōu)化界面結(jié)合的新工藝，并比對(duì)了原石墨烯及具有包覆層石墨烯對(duì)鋁基納米復(fù)合材料的力學(xué)性能和微觀結(jié)構(gòu)的影響。結(jié)果表明，與添加純GNP相比，添加具有TiO2涂層的GNP的納米復(fù)合材料的力學(xué)性能提高。相比于基體，TiO2包覆GNP增強(qiáng)的納米復(fù)合材料的屈服強(qiáng)度、抗拉強(qiáng)度和顯微硬度分別增加了38.9%、34.4%和20.1%。性能的進(jìn)一步改善是由于TiO2涂層優(yōu)化了增強(qiáng)相與基體之間的界面結(jié)合，從而提高了載荷傳遞的有效性。"/>

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壓力燒結(jié)制備二氧化鈦包覆的石墨烯增強(qiáng)鋁基復(fù)合材料
作者:
作者單位:

1.南昌航空大學(xué) 航空制造工程學(xué)院，江西 南昌 330063;2.南昌航空大學(xué) 分析測(cè)試中心，江西 南昌 330063

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基金項(xiàng)目:

江西省教育廳科學(xué)技術(shù)研究項(xiàng)目(GJJ190531)


Titanium Dioxide Coated Graphene Prepared by Pressure Sintering as Reinforcement in Aluminum Matrix Composites
Author:
Affiliation:

1.School of Aeronautic Manufacturing Engineering, Nanchang Hangkong University, Nanchang 330063, China;2.Analysis and Testing Center, Nanchang Hangkong University, Nanchang 330063, China

Fund Project:

Science and Technology Research Program of Jiangxi Provincial Department of Education (GJJ190531); Major Scientific and Technological Research and Development Projects in Jiangxi Province (20194ABC28001)

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    摘要:

    使用壓力燒結(jié)方法制備了石墨烯納米片（GNP）增強(qiáng)的7075鋁基納米復(fù)合材料，提出了一種通過在GNP的表面涂覆二氧化鈦（TiO2）來優(yōu)化界面結(jié)合的新工藝，并比對(duì)了原石墨烯及具有包覆層石墨烯對(duì)鋁基納米復(fù)合材料的力學(xué)性能和微觀結(jié)構(gòu)的影響。結(jié)果表明，與添加純GNP相比，添加具有TiO2涂層的GNP的納米復(fù)合材料的力學(xué)性能提高。相比于基體，TiO2包覆GNP增強(qiáng)的納米復(fù)合材料的屈服強(qiáng)度、抗拉強(qiáng)度和顯微硬度分別增加了38.9%、34.4%和20.1%。性能的進(jìn)一步改善是由于TiO2涂層優(yōu)化了增強(qiáng)相與基體之間的界面結(jié)合，從而提高了載荷傳遞的有效性。

    Abstract:

    Graphene nanoplatelets (GNPs) reinforced 7075Al nanocomposites were synthesized by pressure sintering method. A novel method for optimizing interfacial bonding through TiO2 coated GNPs was proposed. The effects of TiO2 coated GNPs on mechanical properties and microstructure of the aluminum matrix nanocomposites were investigated. Results show that the mechanical properties of the nanocomposites are improved by addition of TiO2 coated GNPs, compared with those of nanocomposites with pure GNPs. The yield strength, ultimate tensile strength, and microhardness of the nanocomposites reinforced by TiO2 coated GNPs are increased by 38.9%, 34.4%, and 20.1%, respectively, compared with those of the matrix. The improvement of the mechanical properties is attributed to the coating layer, which optimizes the interface bonding between the reinforcement and the matrix, thereby improving the efficiency of load transfer.

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吳慶捷,郭正華,李寧,姜麗紅,何文.壓力燒結(jié)制備二氧化鈦包覆的石墨烯增強(qiáng)鋁基復(fù)合材料[J].稀有金屬材料與工程,2021,50(9):3068~3075.[Wu Qingjie, Guo Zhenghua, Li Ning, Jiang Lihong, He Wen. Titanium Dioxide Coated Graphene Prepared by Pressure Sintering as Reinforcement in Aluminum Matrix Composites[J]. Rare Metal Materials and Engineering,2021,50(9):3068~3075.]
DOI：10.12442/j. issn.1002-185X.20200535

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  • 收稿日期:2020-07-23
  • 最后修改日期:2020-08-24
  • 錄用日期:2020-09-02
  • 在線發(fā)布日期: 2021-09-26
  • 出版日期: 2021-09-24