Sliding Wear Behaviour of Ni-α-Al2O3 Nano Composite Coating at Elevated Temperatures

Raghavendra, C. R.; Basavarajappa, S.; Sogalad, Irappa

doi:10.1016/j.colcom.2018.09.003

Cited by 13 publications

(3 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The specimen CT6 has the highest hardness so that CT6 shows the lowest wear rates at elevated temperatures. Other researchers also reported the similar research results 23,31 . For another, with the further increase of temperature, the ε (hcp) phase transfers to γ (fcc) phase in order that the ductility increases above 400 o C 2 , that is, the hardness of materials decreases.…”

Section: Resultssupporting

confidence: 72%

Nano-TiO2 reinforced CoCr matrix wear resistant composites and high-temperature tribological behaviors under unlubricated condition

Cui

Liu

et al. 2020

Sci Rep

View full text Add to dashboard Cite

the cocrMo matrix composites with nano-tio 2 particle (2 wt.%, 4 wt.% and 6 wt.%) were fabricated by using a powder metallurgy technique (P/M), and the nano-TiO 2 content was optimized in matrix. The microstructures, mechanical and high-temperature tribological properties of the synthesized composites were systematically studied. Friction and wear behaviors were studied by using a disk-onball tribo-tester sliding against Si 3 n 4 ceramic ball from room temperature (23 o C) to 1000 o C in air. TiO 2 obviously strengthened the hardness and high-temperature wear resistance of composites. It was attributed to the high load-carrying capacity of matrix, in-situ formed high-temperature solid lubricants and stable oxides film on the wear tracks. 4 wt.% TiO 2 was the critical threshold at which there was a transition of tribological properties over a broad temperature range. The composite containing 4 wt.% nano-TiO 2 exhibited the most reasonable high-temperature friction coefficient and wear rate at all testing temperatures. At different testing temperatures, the composites showed different wear mechanisms.

show abstract

Section: Resultssupporting

confidence: 72%

Nano-TiO2 reinforced CoCr matrix wear resistant composites and high-temperature tribological behaviors under unlubricated condition

Cui

Liu

et al. 2020

Sci Rep

View full text Add to dashboard Cite

show abstract

“…This has resulted in the lower scar width [37]. Similar observations are also drawn for Ni-Al 2 O 3 coating at high temperatures by Raghavendra et al [38] and Ni-TiO 2 coating [39]. The better specific wear is reported for Ni-Al 2 O 3 composite coating due to the pulled-out debris from the matrix consisting Al 2 O 3 particles that have contributed to the three-body abrasive wear [40].…”

Section: Resultssupporting

confidence: 69%

Wear behaviour of different nano particles coating on Al6061 substrate

Raghavendra¹

2023

Surface Engineering

View full text Add to dashboard Cite

The tribological behaviour of Ni-based composite coatings on Al6061 substrate with secondary phase hard oxide particles like ZrO 2 , TiO 2 , and Al 2 O 3 at different elevated temperature conditions was compared. The composite coatings with different reinforcement of nano particles were characterized by scanning electron microscopy and X-ray diffraction technique. The higher microhardness value is reported for the Ni coating with TiO 2 particles and Al 2 O 3 particles. At higher temperature limits of 120°C and 140°C Ni-ZrO 2 coatings have found better specific wear rate. The Ni-Al 2 O 3 -TiO 2 -ZrO 2 composite coating fails to achieve better properties due to higher agglomeration of the particles and dendrite growth. The Ni-Al 2 O 3 coating showed steady wear behaviour at different temperature limits. The coefficient of friction values is found nearly similar for all the type coatings at 40°C and 120°C.

show abstract

“…In the literature on the subject much research is devoted to the subject matter with regard to two-component systems, i.e. Al 2 O 3 -Cu [20][21], Al 2 O 3 -Ni [22][23][24], Al 2 O 3 -Cr [25][26] and Al 2 O 3 -Mo [27][28]. Nevertheless, there are few literature reports concerning the production and characterization of ceramic-based composites containing two metallic phases [29].…”

Section: Introductionmentioning

confidence: 99%

Archives of Metallurgy and Materials

Zygmuntowicz¹,

Wachowski

Piotrkiewicz³

et al. 2020

View full text Add to dashboard Cite

The present research is focused on the characterization of the composites from Al 2 O 3 -Cu-Ni system. Two methods of ceramicmetal composite forming were applied: uniaxial powder pressing and Pulse Plasma Sintering (PPS). To obtain the samples the powder mixtures containing 85 vol.% of Al 2 O 3 and 15 vol.% of metal powders were used. Influence of the sintering process on microstructure and mechanical properties of the two series of the composites was analyzed in detail. The selected physical properties of samples were characterized by Archimedes immersion method. Vickers hardness and the fracture toughness of the composites was determined as well. The microstructure of the composites was characterized by XRD, SEM, EDX. Fractography investigation was carried out as well. Independently on composite production method Al 2 O 3 , Cu, Ni, and CuNi phases were revealed. Fractography investigation results revealed different character of fracture in dependence of fabrication method. Pulse Plasma Sintered samples were characterized by higher crack resistance and higher Vickers hardness in comparison to the specimens manufactured by uniaxial pressing.

show abstract

Sliding Wear Behaviour of Ni-α-Al2O3 Nano Composite Coating at Elevated Temperatures

Cited by 13 publications

References 51 publications

Nano-TiO2 reinforced CoCr matrix wear resistant composites and high-temperature tribological behaviors under unlubricated condition

Nano-TiO2 reinforced CoCr matrix wear resistant composites and high-temperature tribological behaviors under unlubricated condition

Wear behaviour of different nano particles coating on Al6061 substrate

Archives of Metallurgy and Materials

Contact Info

Product

Resources

About