The Effect of Mechanical Activation of Metal Powders on Their Reactivity and Properties of Plasma-Deposited Coatings
VLADIMIR A. POLUBOYAROV1, ANDREY E. LAPIN1, Zoya A. KOROTAEVA1, ANATOLY N. CHEREPANOV2, OLEG P. SOLONENKO2, NATALIA S. KOBOTAEVA3, EKATERINA E. SIROTKINA3 and MICHAEL A.
1Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch
of the Russian Academy of Sciences, Ul. Kutateladze 18, Novosibirsk 630128 (Russia), E-mail: sanych@solid.nsk.su
2Institute of Theoretical and Applied Mechanics, Siberian Branch
of the Russian Academy of Sciences, Ul. Institutskaya 4/1, Novosibirsk 630128 (Russia)
3Institute of Petroleum Chemistry, Siberian Branch of the Russian Academy of Sciences,
Pr. Akademichesky 3, Tomsk 634021 (Russia), E-mail: see@ipc.tsc.ru
Pages: 173-178
Abstract
The effect of the preliminary mechanical treatment of metal powders on the quality of coatings obtained by plasma deposition is investigated. Substantial improvement of the inner structure and strength properties of the coatings is demonstrated. It is stated that the specific heat effect of the interaction of mechanically treated copper powder with acetic acid increases for mechanical treatment up to 15 min, which is likely to be due to the accumulation of defects in metal volume. The chemical reactivity of the mechanically activated copper powder and of the copper powder obtained by means of the electric explosion of wires is demonstrated to correlate with interplane distances between the planes with (111) Miller indices.
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