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Enhanced Adhesion of Ceramics film on Metals by Ion Mixing
Jae-Won Park*, Hyung-Jin Kim, and Sunmog Yeo
poster presentation: Monday 2010-08-23 05:00 PM - 07:00 PM in section Fundamentals of ion-solid interaction
Last modified: 2010-06-02
Abstract
Ceramics coating on metallic materials is considered for corrosion protection application due to the high corrosion resistance nature of ceramics. The prime concern in such a combination is the adhesion between the film and the substrate. We present the studies on the SiC coating on metallic substrates and the effect of ion beam mixing on adhesion. The ion-beam can be employed in designing the stable SiC-metal interface based on fundamental principles. We have tailored the ion energy to have the maximum energy deposition to occur at the interfacial region. We find that ion beam improves the SiC/metal bonding by mixing atoms at interface and forming new phases at the expense of coating and substrate materials during a thermal process and that the thermodynamics of intermixed junction materials plays an important role for the stability of the bonded interface, that is, for high temeprature application it can be employed only to a system that favors a chemical reaction between the two adjacent materials as in the case of the SiC film on the Hastelloy X substrate. One of the merits of the ion beam mixing is that the surface pretreatment is not imperative for the metallic substrate as in conventional diffusion bonding, because a forceful intermixing by the energetic ions mitigates the effect of the initial surface conditions.
Author(s) affiliation:
Jae-Won Park*, Korea Atomic Energy Research Institute, Republic of Korea
Hyung-Jin Kim, , Republic of Korea
Sunmog Yeo, , Republic of Korea
*presenting author
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Hyung-Jin Kim, , Republic of Korea
Sunmog Yeo, , Republic of Korea
*presenting author