智科眼

请选择以下任意方式登录

已有帐号?

验证码登录

微信登录

忘记密码
未收到验证码?
注册

微信注册

智科眼: 双语看懂新科研
首页 中国TOP论文 Nature Science JACS AngewChem PRL AdvMater Lancet Cell EnglMed JAMA
Bioinspired, graphene-enabled Ni composites with high strength and toughness.
Bioinspired,石墨烯镍复合材料 with 高强度和韧性。
Zhang Yunya , Heim Frederick M , Bartlett Jamison L , Song Ningning , Isheim Dieter , Li Xiaodong
  • Sci Adv vol:5 issue:5 (2019) [全文下载] 扫码分享
  • 影响因子: 11.5 点击(122) 收藏(0) 评分(0)
    • 1
    • 2
    • 3
    • 4
    • 5
  • 大自然的智慧在于通过从极其有限的资源构建智能,分层的架构来实现强度和韧性的联合增强。一个代表性的例子是珍珠质,其中实体结构能够在多个长度尺度上形成增韧机制的汇合。结果是强度和韧性的完美结合,这是工程材料难以实现的。在此,由Ni粉末和石墨烯片构成具有珍珠质样实体结构的生物激发Ni/Ni3C复合材料。该复合材料的强度提高了73%,延展性仅降低了28%,从而显着提高了韧性。石墨烯衍生的Ni-Ti-Al/Ni3C复合材料在高达1000℃时保持高硬度。本研究揭示了一种巧妙地使用2D材料通过界面反应制造具有砖 - 砂浆结构的高性能金属基复合材料的方法,并且为高温环境开发了先进的Ni-C基合金的机会。 。
  • Nature's wisdom resides in achieving a joint enhancement of strength and toughness by constructing intelligent, hierarchical architectures from extremely limited resources. A representative example is nacre, in which a brick-and-mortar structure enables a confluence of toughening mechanisms on multiple length scales. The result is an outstanding combination of strength and toughness which is hardly achieved by engineering materials. Here, a bioinspired Ni/Ni3C composite with nacre-like, brick-and-mortar structure was constructed from Ni powders and graphene sheets. This composite achieved a 73% increase in strength with only a 28% compromise on ductility, leading to a notable improvement in toughness. The graphene-derived Ni-Ti-Al/Ni3C composite retained high hardness up to 1000°C. The present study unveiled a method to smartly use 2D materials to fabricate high-performance metal matrix composites with brick-and-mortar structure through interfacial reactions and, furthermore, created an opportunity of developing advanced Ni-C-based alloys for high-temperature environments.
  • 暂无相似论文