Suspension Detonation Spraying of Ceramic Coatings
A. A. Shtertser, V. Yu. Ul’yanitskii, D. K. Rybin
Lavrent’ev Institute of Hydrodynamic, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia
Keywords: детонационное напыление, нанопорошок, суспензия, керамические покрытия, микроструктура, микротвердость, пористость, detonation spraying, nanopowder, suspension, ceramic coatings, microstructure, microhardness, porosity
Abstract
Experiments on detonation spraying of ceramic coatings are carried out by feeding a powder as part of a suspension into a barrel for the first time. Spraying of Al2O3 and TiO2 nanopowders and hydroxyapatite shows that the new method for obtaining coatings (suspension detonation spraying) can be implemented on a CCDS2000 detonation device. Unlike conventional detonation spraying technologies using micron-sized powders, suspension spraying makes it possible to work with powders whose particle size is smaller than 1 m, serving as a basis for a suspension fed into the projector barrel during spraying.
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