Fabrication of magnesium-coated graphene and its effect on the microstructure of reinforced AZ91 magnesium-matrix composites

被引：32
作者：
Zhao, Rongxia [1 ]
Pei, Jinxuan [2 ]
Du, Wenbo [3 ]
Zhao, Zhanyong [1 ]
Zhang, Lizheng [1 ]
Gao, Jianfeng [4 ]
Bai, Peikang [1 ,5 ]
Tie, Di [6 ]
机构：
[1] North Univ China, Sch Mat Sci & Engn, Taiyuan 030051, Peoples R China
[2] Dalian Univ Technol, Sch Phys, Dalian 116024, Peoples R China
[3] Army Acad Armored Forces, Natl Key Lab Remfg, Beijing 100072, Peoples R China
[4] North Univ China, Sch Sci, Taiyuan 030051, Peoples R China
[5] Taiyuan Univ Sci & Technol, Coll Mat Sci & Engn, Taiyuan 030024, Peoples R China
[6] Dalian Jiaotong Univ, Engn Res Ctr Continuous Extrus, Minist Educ, Dalian 116028, Peoples R China
来源：
ADVANCED COMPOSITES AND HYBRID MATERIALS | 2022年 / 5卷 / 01期
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
Graphene; Surface modification; Wettability; Magnesium-matrix composites; HYDROTHERMAL CARBONIZED DEPOSITION; ALLOY; NANOCOMPOSITES; DUCTILITY; STRENGTH; STRATEGY;
D O I：
10.1007/s42114-021-00336-8
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The surface of graphene (GNP) has been successfully coated with magnesium nano-metal to form composite structures in situ via the organic chemical reduction method. The results demonstrate that the organic chemistry plated was successfully used to synthesize 30-50 nm Mg nanoparticles (nano-Mg) smoothly occurred on the surface of graphene. The HRTEM results confirmed that heterogeneous nucleation of Mg promoted the tight bonding between the nano-Mg and the graphene interfaces. In addition, the wettability and dispersibility of magnesium-coated graphene within the AZ91 alloy matrix have been greatly improved, resulting in more beta-Mg17Al12 strengthening phase with a size of 100-300 nm dispersion and precipitation in the enhanced magnesium-matrix composite. These results reveal that the magnesium-coated graphene significantly affects the microstructure of the composite and exhibits an excellent reinforcement effect.
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收藏
页码：504 / 512
页数：9
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