Abstract
Abstract—NbC–WC–Cu composite alloys are fabricated at 1300°C by impregnating mixtures of compacted and noncompacted carbide powders with the copper melt under low-frequency (80 Hz) vibration. Under these conditions, carbides are shown to interact with the formation of core (NbC)–shell ((W,Nb)C) solid solution) structures in the copper melt. The formation of a (W,Nb)C solid solution on the surface of NbC particles promotes the wetting of the carbide with copper. The thermal stability of the carbide solid solutions is investigated during isothermal holding at 500 and 1000°C for 60 min and during slow (10 K/min) heating to 1300°C. A reversible decomposition is detected, and the boundaries of low-temperature latent decomposition of the (Nb,W)C solid solutions are determined by the mass ratio of monocarbides NbC : WC in their alloy with copper. The higher the ratio, the lower the (Nb,W)C decomposition temperature.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
