Cite this article as:

Lyasnikova A. V., Antonov I. N., Lyasnikov V. N. Model of the Processes Nanostructure Formation during Plasma Spraying Hydroxyapatite Porous-Powder Coatings. Izvestiya of Saratov University. New series. Series Physics, 2011, vol. 11, iss. 1, pp. 37-41.

Heading: 
Physics
UDC: 
519.713; 519.711.3; 621.793.7
Language: 
Russian

Model of the Processes Nanostructure Formation during Plasma Spraying Hydroxyapatite Porous-Powder Coatings

Authors: 
Lyasnikova A. V., Yuri Gagarin State Technical University of Saratov, 77, Politechnicheskaya Str., Saratov, 410054, Russia, lyasnikovaav@mail.ru
Antonov Igor N., Saratov State University, 410012, Russia, Saratov, Astrakhanskaya street, 83, tmf@sgu.ru
Lyasnikov V. N., Yuri Gagarin State Technical University of Saratov, 77, Politechnicheskaya Str., Saratov, 410054, Russia, lyasnikovaav@mail.ru
Abstract

We offer a physical model of the process nanostructure formation during plasma spraying hydroxyapatite coatings and described the thermodynamics of heating particle in the plasma torch. We analyzed thermal processes on the base and the formation of thermal fields in the system particle-base by plasma spraying. Possibly that the formation of amorphous coatings, consisting of submicron particles, happened because shear through by contact with the material and base and nanosized crystals appear as a result of very fast cooling (quenching) of the submicron structures.

Key words: 
gasdynamic plasma, plasma spraying, formation of coatings, hydroxyapatite, nanostructures, thermodynamic model, temperature field
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