Microstructure and properties of Cu-Ti alloy infiltrated chopped Cf reinforced ceramics composites
Veröffentlichungsdatum
2017-10-14
Zusammenfassung
Novel friction composites (C/C-Cu5Si-TiC) were prepared via reactive melt infiltration (RMI) of Cu-Ti alloy into porous C/C-SiC composites. The microstructure, physical properties and tribological behaviors of the novel material were studied. Results were compared to conventional C/C-SiC composites produced by liquid silicon infiltration(LSI). The resultant composite showed the microstructure composed of Cu5Si matrix reinforced with TiC particles and intact C/C structures. Most importantly, the composite did not present traces of free Si. As a result, the C/C-Cu5Si-TiC composite showed higher flexural strength, impact toughness and thermal diffusivity in comparison to C/C-SiC composites. Tribological properties were measured using 30CrSiMoVA as a counterpart. In general, the C/C-Cu5Si-TiC composites showed lower coefficient of friction(COF), but higher wear resistance and frictional stability. The improved wear resistance of the C/C-Cu5Si-TiC composites is credited to the formation of friction films from Cu5Si matrix. Other deformation and wear mechanisms are also described
considering the microstructural observations.
considering the microstructural observations.
Schlagwörter
Chopped fibers architecture
;
Microstructure
;
Tribological property
;
Cu-Ti alloy
;
Reactive melt infiltratio
Verlag
Elsevier {BV}
Institution
Dokumenttyp
Artikel/Aufsatz
Zeitschrift/Sammelwerk
Band
43
Heft
18
Startseite
16628
Endseite
16637
Seitenzahl
10
Zweitveröffentlichung
Ja
Dokumentversion
Postprint
Sprache
Englisch
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Name
XIAO - Microstructure and properties of Cu-Ti alloy.pdf
Size
3.3 MB
Format
Adobe PDF
Checksum
(MD5):2789f6075a398850d155fec16f61d7dc