Microstructure and tribological properties of NiMo/Mo2Ni3Si intermetallic “in-situ” composites

Microstructure and Wear Resistance of a Novel Mo-Ni-Si System Intermetallic Composite with Ductile Mo Phase

“…However, the wear resistance might not change much, even be improved under certain conditions, considering that the micro-cracks and even brittle fracture likely occur on intermetallic matrix during the wear process, 18) which has been successfully demonstrated again by the current alloy. The comparison of the wear test results obtained here and in the previous work 8) implies that the wear mass losses of the present Mo-Ni-Si intermetallic composite with ductile Mo dendrites are slightly lower than those of other composite without Mo phase under certain loads. Such a result suggests that the in-situ formation of ductile Mo dendrites has a positive role in improving wear resistance of the designed Mo-Ni-Si intermetallic composite, although it leads to a slight decrease in hardness of composite.…”

“…Similar effects were reported for NiMo/Mo 2 Ni 3 Si intermetallic composite. 8) Differently, the wear debris tends to adhere on the surface of Mo phase here rather than the intermetallic matrix in the previous study, 8) as illustrated in Fig. 4b.…”

“…[5][6][7] Few works have been reported for materials related to NiMo/ Mo 2 Ni 3 Si intermetallic composite, although there have been already tremendous efforts made on refractory metal based alloys. 8,9) The current problem for application of such alloys mainly lies in the lack of room temperature toughness.…”

Microstructure and wear behaviour of laser-cladded γ-Niss/Mo2Ni3Si coating

“…The studies showed that the alloy coating consisted of reinforced phase Cr 13 Ni 5 Si 2 and ductile γ-Ni presented excellent wear-resistance behaviour in comparison with hardened bearing steel. Gui et al [17] prepared NiMo/Mo 2 Ni 3 Si intermetallic 'in situ' composite by the arc-melting process. The results indicated that the alloy coatings comprising Mo 2 Ni 3 Si primary dendrites and ductile phase NiMo exhibited outstanding wear resistance at room temperature due to its high strength and hardness.…”

Synthesis and kinetic study of (Mo,W)Si2–WSi2 nanocomposite by mechanical alloying

“…Other advantages include excellent oxidation resistance (up to 1700°C), good corrosion resistance at high temperature, hightemperature strength, and thermodynamic compatibility with many ceramic reinforcements [1,[4][5][6]. However its application is limited due to its low-temperature brittleness and oxide scale spallation, as well as low toughness and creep resistance at elevated temperature (>1200°C).…”