A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Behaviour Analysis and Comparison of Tribological Characteristics of Electroless Ni–B Coating under Dry and Lubricated Condition
Abstract This study presents the deposition and tribological characterization of nickel–boron (Ni–B) coatings deposited by electroless technique on AISI 1040 steel specimens. Coated specimens are annealed (heat-treated) at 350 °C for 1 h. It is seen from scanning electron micrographs that the surface resembles a typical cauliflower-like appearance. A remarkable improvement in microhardness of the coatings takes place on annealing. Structural analysis of the coatings using X-ray diffraction technique reveals that Ni–B coatings exhibit amorphous nature in as-deposited condition. Upon annealing at 350 °C for 1 h, the coating turns crystalline due to phase transformation. Due to this, hardness of the coatings increases. The annealed coatings are subjected to tribological experiments on a pin-on-disc type tribotester under dry and lubricated conditions at various loads, rotational speed and duration of sliding. COF and wear depth are recorded. It is seen that COF decreases with an increase in load under dry and lubricated conditions. The wear depth is seen to increase as the load and speed increase under both the sliding conditions. The tribological characteristics of the coatings under dry and lubricated condition are compared by generating 3D surface plots of the coefficient of friction and wear characteristics. The worn surface morphologies mainly indicate abrasive wear under both the sliding conditions.
Behaviour Analysis and Comparison of Tribological Characteristics of Electroless Ni–B Coating under Dry and Lubricated Condition
Abstract This study presents the deposition and tribological characterization of nickel–boron (Ni–B) coatings deposited by electroless technique on AISI 1040 steel specimens. Coated specimens are annealed (heat-treated) at 350 °C for 1 h. It is seen from scanning electron micrographs that the surface resembles a typical cauliflower-like appearance. A remarkable improvement in microhardness of the coatings takes place on annealing. Structural analysis of the coatings using X-ray diffraction technique reveals that Ni–B coatings exhibit amorphous nature in as-deposited condition. Upon annealing at 350 °C for 1 h, the coating turns crystalline due to phase transformation. Due to this, hardness of the coatings increases. The annealed coatings are subjected to tribological experiments on a pin-on-disc type tribotester under dry and lubricated conditions at various loads, rotational speed and duration of sliding. COF and wear depth are recorded. It is seen that COF decreases with an increase in load under dry and lubricated conditions. The wear depth is seen to increase as the load and speed increase under both the sliding conditions. The tribological characteristics of the coatings under dry and lubricated condition are compared by generating 3D surface plots of the coefficient of friction and wear characteristics. The worn surface morphologies mainly indicate abrasive wear under both the sliding conditions.
Behaviour Analysis and Comparison of Tribological Characteristics of Electroless Ni–B Coating under Dry and Lubricated Condition
Duari, Santanu (author) / Mukhopadhyay, Arkadeb (author) / Barman, Tapan Kumar (author) / Sahoo, Prasanta (author)
2019-01-01
24 pages
Article/Chapter (Book)
Electronic Resource
English
Tribological characterization of electroless NiP coatings lubricated with biolubricants
| British Library Online Contents | 2007
Tribological Properties of 3-D Carbon Composites under Lubricated Condition
| British Library Online Contents | 2005
| British Library Online Contents | 2017