1 Northwest Institute for Non-ferrous Metal Research, Xi’an 710016; 2 Institute of Laser Advanced Manufacturing, Zhejiang University of Technology, Hangzhou 310014
Cold spray is a novel low-temperature and solid-state deposition technique, which is specially appropriate for fabricating the thermosensitive, phase-transition sensitive, oxidation sensitive materials coating. However, the hard material is impossible to deposit by single cold spray. In order to solve the problem, laser irradiation is introduced into the cold spray process to synchronously soften the spraying particles and substrate. The laser don’t only make the hard material deposit on the substrate, but also significantly improving the deposition efficiency, density and bonding strength of coating. The laser assisted cold spray composite technique can be used to fabricate more kinds of meateials. In this paper, the principles, features and advantages of the laser assisted cold spray technique were mainly introduced. The research progress of depositing the hard metal and metal-based composite material by composite technique was summarized.
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