7 February 2000 Laser cladding for high-temperature self-lubricating wear-resistant composite coatings on γ-TiAl intermetallic alloy Ti-48Al-2Cr-2Nb
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Proceedings Volume 3888, High-Power Lasers in Manufacturing; (2000) https://doi.org/10.1117/12.377035
Event: Advanced High-Power Lasers and Applications, 1999, Osaka, Japan
Abstract
High-temperature self-lubricating wear-resistant metal matrix composite coatings are fabricated on substrate of a (gamma) - TiAl intermetallic alloy Ti-48Al-2Cr-2Nb by laser cladding. The hybrid (gamma) -NiCr metal matrix composite coating is mainly reinforced by rapidly solidified wear-resistant phase of hyper-eutectic M7C3 and self-lubricating particles of Ag and CaF2 or CaAgF4. Microstructure and hardness within the whole laser clad composite coating is homogeneous and the bonding to the substrate is purely metallurgical. Both hardness and dry sliding wear resistance of the (gamma) -TiAl intermetallic alloy are significantly enhanced after laser cladding treatment.
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X. B. Liu, X. B. Liu, C. M. Wang, C. M. Wang, L. G. Yu, L. G. Yu, Hua Ming Wang, Hua Ming Wang, } "Laser cladding for high-temperature self-lubricating wear-resistant composite coatings on γ-TiAl intermetallic alloy Ti-48Al-2Cr-2Nb", Proc. SPIE 3888, High-Power Lasers in Manufacturing, (7 February 2000); doi: 10.1117/12.377035; https://doi.org/10.1117/12.377035
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