Abstract
This work is based on the Stellite SF12-NB-Sn composites deposited on a TA1 titanium alloy using a laser melting deposition (LMD) technique, the parameters of which are such as to provide almost crack-free composites with very low porosity. To our knowledge, it is the first time that the Stellite SF12-NB-Sn mixed powders are deposited as the hard composites by a LMD technique. The test results indicated that the heteromorphy Ti₃Sn phases were produced through the in situ metallurgical reactions, which grew along (101), (110) and (200), and a lot of the amorphous phases were also produced. Scanning electron microscope images indicated that the nanoscale particles and nanorods were produced in such composites. Compared with a TA1 alloy, an increasement of the micro-hardness and wear resistance is obtained for such composites.

Key words
amorphous materials, coating materials, nanofabrications, lasers

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