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Synthesis of Diamonds from Organic Compounds

#2638


Synthesis of Diamonds from Organic Compounds, Manufacturing of Diamond Compacts and Composites, and the Study of Physical and Chemical Properties of these Materials

Tech Area / Field

  • MAN-MAT/Engineering Materials/Manufacturing Technology
  • MAT-SYN/Materials Synthesis and Processing/Materials

Status
3 Approved without Funding

Registration date
10.11.2002

Leading Institute
Kurchatov Research Center, Russia, Moscow

Supporting institutes

  • Institute of Organic Chemistry, Russia, Moscow\nInstitute for High Pressure Physics, Russia, Moscow reg., Troitsk

Collaborators

  • Tours University, France, Tours\nRice University / Department of Chemistry, USA, TX, Houston

Project summary

Utilization of the catalytic synthesis of artificial diamonds has led to wide usage of such diamonds in industry. Diamonds are used mainly in processing of ferrous and non-ferrous metals, plastics, wood, glasses, rocks, and construction materials, as well as in oil and gas industries and in geological prospecting. However, diamonds produced by this method have shortcomings due to metallic and non-metallic impurities, which worsen their mechanical properties.

Therefore, the aim of the present work is:

a) elaboration of a new non-catalytic method of diamond synthesis from organic compounds allowing production of high-purity diamonds without metallic impurities, as well as semiconducting diamonds with controlled doping.


b) complex study of the carbonization of organic materials at high pressure.
c) development of methods of diamond compacting for practical using and studying.
d) study of physical and chemical properties of the manufactured diamonds, compacts, and intermediate products.

Therefore, in this work with the use of the non-traditional original high-pressure (2-10 GPa) method of diamond synthesis, compacting and the modern spectral techniques (x-ray photoelectron, Auger, emission, absorption spectroscopies using the synchrotron radiation etc.) of studying physical and chemical properties of the intermediate and final products, the method of diamond synthesis and compacting will be developed. Also, a wide circle of diamond and compact samples produced from various organic compounds (naphthalene, antrazene, adamantane etc.) will be obtained, and their physical and chemical properties will be studied in order to certify the products.

By the present time the basic method of diamond production has been the catalytic synthesis using catalyzers on the basis of metals (Fe, Co, Ni etc.), their alloy and compounds. Catalytic synthesis used as a basis technology by General Electric (GE), Sumitomo and other companies including Russian ones does not allow producing of diamonds pure from metal-catalyzer and doping. Also low-pressure diamond synthesis methods such as Carbon Vapor Deposition (CVD) exist and have been developed. This method yields diamonds free from catalyzer. However, such diamonds form in the P-T region of graphite stability, which makes impossible growing of perfect diamond single crystals.

Synthesis of diamonds from organic materials occurs in the region of diamond thermodynamic stability, which provides high degree of crystallinity. Development of the proposed new non-traditional method of diamond synthesis and compacting will determine the progress in quality of such materials and significantly increase profitability of their production.

The collective of participants includes high-skilled experts in the synthesis of carbon materials and the studies of their physico-chemical properties (Prof. Yu. A. Teterin, Dr. A. P. Dementiev (RRC “KI”), Prof. E. N. Yakovlev, Prof. V. A. Davydov (IHPP RAS), Prof. S. P. Kolesnikov, V. M. Zhulin (IGC RAS) etc.). By the present time they have obtained perspective preliminary experimental results allowing considering this collective capable of development of a new effective method of diamond synthesis from organic materials, controlled doping of the diamonds and complex physico-chemical quality control. It is of greatly interest and importance for technology of industrial production of super-hard materials, semiconductors and jewelry diamonds.

There is no doubt that the considered method will be widely applied in production of single crystalline diamonds (single crystal powders of 200 mm grain size) and diamond compacts of about 4×4×4 mm size for processing instruments and boring equipment. Practically, the project’s aim is creation of a new generation of diamond based super hard materials to be used also as wide-band semiconductors.

The work in the frame of the Project will be conducted in collaboration with the leading foreign scientific centers (W.M. Rise University, Department of Chemistry, USA, Texas, Houston, Tours University, Lab. of Structure and properties of molecular compounds, Tours, France), which are not only interested in the results of the Project, but also can provide unique measuring and technical equipment.

To solve the set goals, a lot of theoretical, experimental and technical work using modern physical and industrial equipment will be done.

In the whole, the Project meets the Task s and goals of the ISTC. It gives the participating experts in nuclear weapons and missile technique a chance to apply their skills in non-military activity. The works on the projects with developing countries and transferring them know-hows and knowledge in the military technique will be totally excluded.


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