Tribological properties of WC-Co/NiCrBSi and Mo/NiCrBSi plasma spray coatings under boundary lubrication conditions
Abstract
The tungsten carbide based WC-Co/NiCrBSi (50/50) and molybdenum based Mo/NiCrBSi (75/25) coatings were investigated under boundary lubricated sliding conditions, and their tribological properties were analysed and compared. These two coatings are in service for a long time, but there are very few papers dealing with their tribological properties, especially in lubricated sliding conditions. The NiCrBSi self-fluxing alloy is one of the popularly used materials for thermal sprayed coating, with relatively high hardness, reasonable wear resistance and high temperature corrosion. Tungsten carbide (WC) is one of the most widely used commercial hard coating materials, and is added to the NiCrBSi coating to improve its hardness and wear resistance. Molybdenum (Mo) is added to the NiCrBSi coating to reduce its coefficient of friction, i.e. to improve its dry sliding wear resistance. The results showed that WC-Co/NiCrBSi coating was more wear resistant, but caused higher wear of the counter-bod...y material. Coefficients of friction were similar for both coatings.
Keywords:
Wear / Tungsten carbide / Molybdenum / Friction / Coatings / Boundary lubrication / Atmospheric plasma sprayingSource:
Tribology in Industry, 2017, 39, 2, 183-191Publisher:
- Fakultet inženjerskih nauka, Kragujevac
Funding / projects:
- Development of covering and core production technology based on local raw materials for manufacturing of special coated electrodes designed for steel arc welding (RS-MESTD-Technological Development (TD or TR)-34016)
- Investigation and Optimization of the Technological and Functional Performance of the Ventilation Mill in the Thermal Power Plant Kostolac B (RS-MESTD-Technological Development (TD or TR)-34028)
Collections
Institution/Community
Mašinski fakultetTY - JOUR AU - Vencl, Aleksandar AU - Mrdak, Mihailo AU - Hvizdos, Pavol PY - 2017 UR - https://machinery.mas.bg.ac.rs/handle/123456789/2707 AB - The tungsten carbide based WC-Co/NiCrBSi (50/50) and molybdenum based Mo/NiCrBSi (75/25) coatings were investigated under boundary lubricated sliding conditions, and their tribological properties were analysed and compared. These two coatings are in service for a long time, but there are very few papers dealing with their tribological properties, especially in lubricated sliding conditions. The NiCrBSi self-fluxing alloy is one of the popularly used materials for thermal sprayed coating, with relatively high hardness, reasonable wear resistance and high temperature corrosion. Tungsten carbide (WC) is one of the most widely used commercial hard coating materials, and is added to the NiCrBSi coating to improve its hardness and wear resistance. Molybdenum (Mo) is added to the NiCrBSi coating to reduce its coefficient of friction, i.e. to improve its dry sliding wear resistance. The results showed that WC-Co/NiCrBSi coating was more wear resistant, but caused higher wear of the counter-body material. Coefficients of friction were similar for both coatings. PB - Fakultet inženjerskih nauka, Kragujevac T2 - Tribology in Industry T1 - Tribological properties of WC-Co/NiCrBSi and Mo/NiCrBSi plasma spray coatings under boundary lubrication conditions EP - 191 IS - 2 SP - 183 VL - 39 DO - 10.24874/ti.2017.39.02.04 ER -
@article{ author = "Vencl, Aleksandar and Mrdak, Mihailo and Hvizdos, Pavol", year = "2017", abstract = "The tungsten carbide based WC-Co/NiCrBSi (50/50) and molybdenum based Mo/NiCrBSi (75/25) coatings were investigated under boundary lubricated sliding conditions, and their tribological properties were analysed and compared. These two coatings are in service for a long time, but there are very few papers dealing with their tribological properties, especially in lubricated sliding conditions. The NiCrBSi self-fluxing alloy is one of the popularly used materials for thermal sprayed coating, with relatively high hardness, reasonable wear resistance and high temperature corrosion. Tungsten carbide (WC) is one of the most widely used commercial hard coating materials, and is added to the NiCrBSi coating to improve its hardness and wear resistance. Molybdenum (Mo) is added to the NiCrBSi coating to reduce its coefficient of friction, i.e. to improve its dry sliding wear resistance. The results showed that WC-Co/NiCrBSi coating was more wear resistant, but caused higher wear of the counter-body material. Coefficients of friction were similar for both coatings.", publisher = "Fakultet inženjerskih nauka, Kragujevac", journal = "Tribology in Industry", title = "Tribological properties of WC-Co/NiCrBSi and Mo/NiCrBSi plasma spray coatings under boundary lubrication conditions", pages = "191-183", number = "2", volume = "39", doi = "10.24874/ti.2017.39.02.04" }
Vencl, A., Mrdak, M.,& Hvizdos, P.. (2017). Tribological properties of WC-Co/NiCrBSi and Mo/NiCrBSi plasma spray coatings under boundary lubrication conditions. in Tribology in Industry Fakultet inženjerskih nauka, Kragujevac., 39(2), 183-191. https://doi.org/10.24874/ti.2017.39.02.04
Vencl A, Mrdak M, Hvizdos P. Tribological properties of WC-Co/NiCrBSi and Mo/NiCrBSi plasma spray coatings under boundary lubrication conditions. in Tribology in Industry. 2017;39(2):183-191. doi:10.24874/ti.2017.39.02.04 .
Vencl, Aleksandar, Mrdak, Mihailo, Hvizdos, Pavol, "Tribological properties of WC-Co/NiCrBSi and Mo/NiCrBSi plasma spray coatings under boundary lubrication conditions" in Tribology in Industry, 39, no. 2 (2017):183-191, https://doi.org/10.24874/ti.2017.39.02.04 . .