Evaluation of Tribological Properties and Optimization of Electroless Ni-P-W Coating under Dry Condition using Grey Fuzzy Analysis
Journal Title: Tribology in Industry - Year 2017, Vol 39, Issue 1
Abstract
Electroless Ni-P-W coating has enhanced tribological properties compared to the conventional binary alloys. Hence, electroless Ni-W-P, which is a ternary alloy, is synthesized on mild steel substrates. The coatings are heat treated at 400 °C for 1 hr to obtain a high hardness. Their tribological behavior is investigated on a pin–on–disc tribo–tester under dry condition. Three test parameters which include the applied normal load (L), sliding speed (S) and sliding time (T) are varied and their effects on wear depth and coefficient of friction are analyzed. An attempt is made to ascertain the optimum combination of the parameters that would minimize the coefficient of friction and wear depth of the deposits simultaneously using Grey Fuzzy logic. Optimum tribological behavior of the deposits is obtained at an applied normal load of 10 N, sliding speed of 80 rpm and sliding duration of 5min. Load and time are seen to be the most significant factors in influencing the friction and wear of the deposits. The variation of coefficient of friction and wear depth considering the combined effect of the aforesaid parameters is analyzed from three dimensional surface plots. The wear mechanism is found to be predominantly abrasive in nature.
Authors and Affiliations
A . Mukhopadhyay, S . Duari, T . K . Barman, P. Sahoo
Keywords
Related Articles
- EP ID EP228698
- DOI 10.24874/ti.2017.39.01.06
- Views 74
- Downloads 0
Flammability Tests on Hot Surface for Several Hydraulic Fluids
Industrial equipment using hydraulic fluids are design to accept higher load and speed, implicitly higher temperatures, including for fluids. Leakages from enclosures like gear boxes or hydraulic systems could increase t...
The Influence of Degumming Process on Tribological Behaviour of Soybean Oil
This paper presents experimental results for pointing out the tribological behaviour of two soybean oils (crude and degummed) in comparison to the transmission oil T90, with the help of tests on a four ball machine. The...
Acid Aging Effects on Surfaces of PTFE Gaskets Investigated by Thermal Analysis
This paper investigates the effect of a prolonged acid attack on the surface of PTFE by Thermogravimetric Analysis (TGA) and Differential Scanning Calorimetry (DSC). PTFE is very non-reactive, partly because of the stren...
Investigation of Wear Coefficient of Manganese Phosphate Coated Tool Steel
In recent years the properties of the coating in terms of wear resistance is of paramount importance in order to prevent the formation of severe damages. In this study, Wear coefficient of uncoated, Manganese Phosphate c...
Enhancement in the Tribological and Mechanical Properties of Electroless Nickel-Nanodiamond Coatings Plated on Iron
A technology to improve the tribological and mechanical surface properties of iron alloys is developed based on the electroless nickel plating. The technology combines sol-gel and electroless deposition technique. Novel...