How to get sprayed metal coatings to stick

November 22, 2017

When bonding two pieces of metal, either the metals must melt a bit where they meet or some molten metal must be introduced between the pieces. A solid bond then forms when the metal solidifies again. But researchers at MIT have found that in some situations, melting can actually inhibit metal bonding rather than promote it.

Micrographs of a metal surface after impact by metal particles. Craters are formed due to melting of the surface from the impact.

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