Abstract:Cr3C2-Ni cermet is a kind of promising material especially for wear applications due to its excellent wear resistance. However, researches were mainly concentrated on the experiment condition of room temperature, besides high-temperature wear mechanism of the cermet would be utilized much potential applications and also lack of consideration. In present paper, the influence of Mo content on the high-temperature wear behavior of in-situ Cr3C2-20 wt. % Ni cermet was investigated systematically. The friction-wear… Show more
“…From the SEM morphologies of the wear scars, especially from the high-magnification photographs, the adhesive wear is easy to be observed and two regions with different contrast can be obviously found, which are marked as 1–10 in figure 8 a–e . The wear mechanism of Ni/Al 2 O 3 coating is adhesive wear [25,26]. Figure 8SEM surface morphology of wear orbit under different magnetic field conditions: ( a ) 0 T Ni/Al 2 O 3 composite coating, ( b ) 0.1 T Ni/Al 2 O 3 composite coating, ( c ) 0.2 T Ni/Al 2 O 3 composite coating, ( d ) 0.3 T Ni/Al 2 O 3 composite coating and ( e ) 0.4 T Ni/Al 2 O 3 composite coating.…”
In the process of electrodeposition, the magnetic field would generate the magneto hydrodynamic (MHD) effect, which affects the flow and mass transfer of hydrogen evolution. Thus, the performance of electrodeposition coatings will be affected. In this work, Ni/nano-Al
2
O
3
coatings prepared by brush plating with magnetic fields were studied. The results show that the magnetic field indeed influences the morphology, texture and wears resistance. The morphology of Ni/Al
2
O
3
coating is smooth and uniform; the (200) plane of Ni/Al
2
O
3
coating is preferentially oriented in the same direction of a magnetic field; the wear resistance of Ni/Al
2
O
3
composite coatings increases due to the uniform distribution of Al
2
O
3
particles; and the wear mechanism of coating belongs to adhesive wear. The optimal intensity of magnetic field for Ni/Al
2
O
3
composite coatings to obtain a good performance is 0.1 T.
“…From the SEM morphologies of the wear scars, especially from the high-magnification photographs, the adhesive wear is easy to be observed and two regions with different contrast can be obviously found, which are marked as 1–10 in figure 8 a–e . The wear mechanism of Ni/Al 2 O 3 coating is adhesive wear [25,26]. Figure 8SEM surface morphology of wear orbit under different magnetic field conditions: ( a ) 0 T Ni/Al 2 O 3 composite coating, ( b ) 0.1 T Ni/Al 2 O 3 composite coating, ( c ) 0.2 T Ni/Al 2 O 3 composite coating, ( d ) 0.3 T Ni/Al 2 O 3 composite coating and ( e ) 0.4 T Ni/Al 2 O 3 composite coating.…”
In the process of electrodeposition, the magnetic field would generate the magneto hydrodynamic (MHD) effect, which affects the flow and mass transfer of hydrogen evolution. Thus, the performance of electrodeposition coatings will be affected. In this work, Ni/nano-Al
2
O
3
coatings prepared by brush plating with magnetic fields were studied. The results show that the magnetic field indeed influences the morphology, texture and wears resistance. The morphology of Ni/Al
2
O
3
coating is smooth and uniform; the (200) plane of Ni/Al
2
O
3
coating is preferentially oriented in the same direction of a magnetic field; the wear resistance of Ni/Al
2
O
3
composite coatings increases due to the uniform distribution of Al
2
O
3
particles; and the wear mechanism of coating belongs to adhesive wear. The optimal intensity of magnetic field for Ni/Al
2
O
3
composite coatings to obtain a good performance is 0.1 T.
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