For composite coatings obtained by cold spraying from powder mixtures of composition Al + 50 wt. % B and Al + 50 wt. % B4C, prepared in a V-shaped mixer and mechanical processing in a planetary mill, a comparison of these methods for preparing mixtures for the content of boron (boron carbide) in the coating was carried out. It is shown that, regardless of the method of preparation, the content of boron and/or boron carbide in the coating has close values, which is confirmed by the results of X-ray phase analysis and visual processing of images of the coating structure.
The features of the formation of an intermetallic Ni3Al coating by cold spraying of a Ni–Al powder mixture mechanically treatment in a planetary mill and prepared in a V-shaped mixer are presented. It is shown that the powder deposition efficiency is 1.5 times higher when coatings are obtained from a mechanically treated powder mixture of Ni and Al components. Subsequent high-temperature treatment in the furnace chamber creates a condition for the formation of an intermetallic compound of the Ni-Al system of various stoichiometric proportions.
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