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CORRELATION OF IMPACT CONDITIONS,
INTERFACE REACTIONS, MICROSTRUCTURAL
EVOLUTION, AND MECHANICAL PROPERTIES
IN KINETIC SPRAYING OF METALS: A REVIEW
Jaeick Kim and Changhee Lee
Most studies into kinetic spray technology focus on basic
research, but a large portion of current research is devoted to
industrial applications of the technology. However, to advance
studies on industrial applications of kinetic spray requires a
profound understanding of the scientific foundations of the
process. Nevertheless, there is not yet a well-organized sum-
mary of the correlations among impact conditions, interface
reactions, microstructural evolution, and mechanical prop-
erties across the whole field of kinetic spray technology. This
paper provides an overview of these correlations for kinetic
spray of metals. For each correlation, interactions between the
given conditions and material properties of the metal feed-
stock powder are the most influential. These interactions are
so complicated that it is difficult to systematically classify all
cases into certain types. An attempt is made to explain and
summarize the critical factors and their roles in each relation-
ship (Fig. 5).
Fig. 5 —
EBSD characterization of Ni coating after nanoindentation:
Euler angle map.