Tribological evaluation on Ni3Al-based alloy and its composites under unlubricated wear condition

The effects of Mo2C additions on the microstructure and sliding wear of TiC0.3N0.7–Ni3Al cermets

“…In comparison, Ozdemir and colleagues reported COF values between~0.53 and~0.76 for hot-pressed, reaction-sintered Ni 3 Al tested under relatively low loads (2 to 10 N) [30]. Broadly similar COF values to those determined for the current cermets were reported by Gong et al, for an Fe-containing Ni 3 Al alloy, with a COF of 0.55 ± 0.02 [31]. This value was shown to increase to 0.68 ± 0.02 with a 6 vol.% Cr 3 C 2 addition in that work, but was lowered to 0.45 ± 0.02 with a similar volume fraction addition of MnS.…”

Microstructure and tribological properties of Cr3C2/Ni3Al composite materials prepared by hot isostatic pressing (HIP)

“…When present in iron, cobalt, and nickel matrices, chromium carbide exhibits high hot-hardness and excellent hightemperature oxidation resistance combined with good wetting ability [14][15]. Hence, chromium carbides are chosen frequently as hard-particle reinforcements for addition into Ni 3 Al-based matrices, to form Cr 3 C 2 /Ni 3 Al composites [8,16]. Cr 3 C 2 /Ni 3 Al composites have been widely investigated as wear-resistant materials in wear applications for many years.…”

“…Bullock et al [17] studied directionally solidified Ni-Ni 3 Al-Cr 3 C 2 composites and found that the composites show better creep resistance than the matrix-only material. The wear performance of chromium-carbide-reinforced Ni 3 Al matrix composites under ambient temperature was studied by Gong et al [15][16]18]. The results indicated that composites presented better wear resistance compared with the matrix-only material.…”

Study on Wear Behaviors of Ni₃Al/Cr-Carbides Cladding Layer on High Strength Steel Substrate

“…The friction coefficients of the testing cladded layer and the reference composite were investigated under the load of 20 N. The measured friction coefficients of the cladded layer and the HIP processed Ni3Al/Cr3C2 composite were 0.13±0.02 and 0.68±0.02, respectively, see Figure 7. The friction coefficient of the HIP processed monolithic NAC-alloy (0.45±0.02) and the commercial vermicular graphite cast iron (0.48±0.02) from our previous investigation [9] were also given in the figure, as evaluation references.…”