Fabrication of Carbon Nanotube - Chromium Carbide Composite Through Laser Sintering

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• 作者：Ze Liu ; Yibo Gao ; Fei Liang ; Benxin Wu…
• 关键词：Laser sintering ; Ceramic composite ; Carbon nanotube
• 刊名：Lasers in Manufacturing and Materials Processing
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：3
• 期：1
• 页码：1-8
• 全文大小：668 KB
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• 作者单位：Ze Liu (1)
  Yibo Gao (2)
  Fei Liang (7)
  Benxin Wu (1) (4)
  Jihua Gou (3)
  Martin Detrois (4)
  Sammy Tin (4)
  Ming Yin (4)
  Philip Nash (4)
  Xiaoduan Tang (5)
  Xinwei Wang (6)
  
  1. School of Mechanical Engineering, Purdue University, 585 Purdue Mall, West Lafayette, IN, 47907, USA
  2. General Electric - Global Research, Shanghai, China
  7. Embraer Engineering and Technology Center, Melbourne, FL, USA
  4. Illinois Institute of Technology, Chicago, IL, 60616, USA
  3. University of Central Florida, Orlando, FL, USA
  5. Thrustmaster of Texas, Inc., Houston, TX, USA
  6. Iowa State University, Ames, IA, USA
  
• 刊物类别：Manufacturing, Machines, Tools; Industrial and Production Engineering; Surfaces and Interfaces, Thin
• 刊物主题：Manufacturing, Machines, Tools; Industrial and Production Engineering; Surfaces and Interfaces, Thin Films;
• 出版者：Springer US
• ISSN：2196-7237

文摘

Ceramics often have high hardness and strength, and good wear and corrosion resistance, and hence have many important applications, which, however, are often limited by their poor fracture toughness. Carbon nanotubes (CNTs) may enhance ceramic fracture toughness, but hot pressing (which is one typical approach of fabricating CNT-ceramic composites) is difficult to apply for applications that require localized heat input, such as fabricating composites as surface coatings. Laser beam may realize localized material sintering with little thermal effect on the surrounding regions. However, for the typical ceramics for hard coating applications (as listed in Ref.[1]), previous work on laser sintering of CNT-ceramic composites with mechanical property characterizations has been very limited. In this paper, research work has been reported on the fabrication and characterization of CNT-ceramic composites through laser sintering of mixtures of CNTs and chromium carbide powders. Under the studied conditions, it has been found that laser-sintered composites have a much higher hardness than that for plasma-sprayed composites reported in the literature. It has also been found that the composites obtained by laser sintering of CNTs and chromium carbide powder mixtures have a fracture toughness that is ~23 % higher than the material obtained by laser sintering of chromium carbide powders without CNTs. Keywords Laser sintering Ceramic composite Carbon nanotube