|
Abstract |
Application of Power Ultrasonics in
Composite Materials Production Technologies
B.Mordyuk, G.I.Prokopenko (G.V.
Kurdyumov Institute for Metal Physics NAS of Ukraine, Kiev, Ukraine)
e-mail:
prokop@imp.kiev.ua
The
physical backgrounds of composite materials production in ultrasonic field are
discussing. The three directions of application of power ultrasonics in of
composite materials manufacturing technologies are emphasized: combine
deformation of heterogeneous materials in ultrasonic field; combination of
ultrasonic technologies with powder metallurgy methods; crystallization in
ultrasonic field. It is determined a number of physical phenomena arising
during ultrasonic action that provide the advantages of ultrasonic technologies
of composite production. The activation of diffusion and mass-transfer
processes, initialization of solid phase reactions occur in metals in
ultrasonic field and during ultrasonic cavitation treatment. The schemes of
ultrasonic equipment for drawing, flattering and pressing; for milling, mixing
and compacting of powders in ultrasonic field; for crystallization in
ultrasonic and centrifugal fields are shown. The results of investigated
physical and functional properties of composite materials produced by several
ultrasonic technologies are presented. There are unidirectional composite Fe-Cu
after drawing with ultrasound; CuNiFe solid solution formation after ultrasonic
milling; phase transformation of Fe4N after ultrasonic milling; Zn-Pb composite
after crystallization in ultrasonic and centrifugal fields and other examples.
Section
: 11