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  Global Journal of Physical Chemistry 2012, 3: 3
  Review Article
 
Thermodynamic stability and mechanical properties of nanodiamond
  Bin Wena, Jijun Zhaob  
     
a State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
b College of Advanced Science and Technology, Dalian University of Technology, Dalian 116024, China

   
  Abstract  
  At ambient, the energy barrier on the transformation path from graphite to diamond is about 0.4 eV/carbon atom, therefore a high temperature and high pressure conditions, or catalysts processing is necessary to achieve this transformation. However, in recent 20 years, many experimental results show that nanodiamond nucleation and growth can occur in the metastable phase region of diamond. To understand the nanodiamond nucleation and growth at metastable phase region of diamond, lots of works about nanodiamond thermodynamic stability have been published. In addition, diamond has many especial properties, such as, high hardness, low friction coefficient. While the surface of microcrystalline diamond film prepared by CVD is generally rough, and limits its application as a wear-resistant surface. But nanodiamond can overcome the above shortcoming, and can be used as wear-resistant surface. Due to the applications as wear-resistant surface, the mechanical property of nanodiamond has been research focus, and many research papers about the mechanical property of nanodiamond have been published. In this review paper, a systematic overview of the recent development in the studies of the thermodynamic stability and mechanical properties of nanodiamond is summarized.
     
  Keywords  
  Nanodiamond; Thermodynamic stability; Mechanical properties  
     
   
   
   
   
     

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