Techniques volume combustion synthesis

Combustion synthesis (CS) is an attractive technique to produce a wide variety of advanced materials including powders and near-net shape products of ceramics, intermetallics, composites, and functionally graded materials. This method was discovered in the former Soviet Union [13]. The development of this technique leads to the appearance of a new scientific direction that incorporates both aspects of combustion and materials science [14, 15]. CS can occur by two modes self-propagating high-temperature synthesis (SHS) and volume combustion synthesis (YCS). 

In this paper we present a new technique for the synthesis of carbon film with carbynoid structures. The basis of the method described here consists of a combustion reaction between oxygen and acetylene and particular parameters for flame conditions. The flame volume can be considered as the reaction chamber as in conventional chemical vapor deposition (CvD) or physical vapor deposition (PVD) methods. This technique provides a method of synthesizing carbyne at high growth rates and of obtaining better crystals. 

The combustion technique appears to be controlled by the mass of the mixture and the volume of the container. Studies conducted by Kingsley and Patil [2] demonstrated that the mass/volume ratio is critical for the occurrence of combustion synthesis, as compositions with less than 5 g in containers of 300 mL did not undergo the ignition process. 

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