Enhanced mechanical property and radiation resistance of reduced graphene oxide/tungsten composite with nacre -like architecture

被引：13

作者：

He, Lanli ^{[1
]}

Si, Shuyao ^{[1
]}

Xu, Hang ^{[1
]}

Tang, Chongyang ^{[1
]}

Liu, Jiangchao ^{[1
]}

Dong, Shilian ^{[1
]}

Jiang, Changzhong ^{[1
]}

Xiao, Xiangheng ^{[1
,2
]}

机构：

[1] Wuhan Univ, Sch Phys & Technol, Key Lab Artificial Micro & Nanostruct, Hubei Nucl Solid Phys Key Lab,Minist Educ, Wuhan 430072, Peoples R China

[2] Wuhan Univ, Su Zhou Inst, Suzhou 215123, Peoples R China

来源：

COMPOSITE STRUCTURES | 2020年 / 245卷

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

THERMAL-STABILITY; TUNGSTEN; NANOCOMPOSITE; OXIDE; NANOCRYSTALLINE; INDENTATION; DISPERSION; REDUCTION; TOLERANCE; STRENGTH;

D O I：

10.1016/j.compstruct.2020.112361

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Nuclear materials combining excellent mechanical property and radiation resistance are highly demanded. Here, inspired natural nacre, we fabricated reduced graphene oxide/tungsten composite (RGO/W) with laminated structure by powder metallurgy (PM) method. The relationship between structure design, mechanical hardness and radiation-induced hardening of RGO/W composite were evaluated by nanoindentation. Results revealed that mechanical hardness of nacre-like RGO/W composite was enhanced by 76% in comparison with nacre-like W and was similar to commercial W. Further, under 28.92 displacement per atom (DPA), hardening rate of nacre-like RGO/W composite was lower (18.6%) than that of nacre-like W (129.2%) and commercial W (40.1%). Reasons were attributed to reinforcement effect of RGO and nacre-like structure, which provided numerous RGO-W interfaces as load bearer and helped heal radiation-induced defects. Our work highlights a promising structure design strategy for enhancing damage resistance and mechanical property of nuclear materials by designing nacre-like architecture. © 2020 Elsevier Ltd

引用

页数：7

共 59 条

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