Effect of TiCN and AlCrN Coating on Tribological Behaviour of Plasma-nitrided AISI 4140 Steel

2017 ◽  
Vol 5 (2) ◽  
pp. 1-17
Author(s):  
Santosh Vitthal Bhaskar ◽  
Hari Narayan Kudal
Keyword(s):  
Physical Vapor Deposition ◽  
Sliding Wear ◽  
Plasma Nitriding ◽  
Titanium Carbonitride ◽  
Wear Behaviour ◽  
Dry Sliding Wear ◽  
Tribological Behaviour ◽  
Wear Properties ◽  
Aisi 4140 Steel ◽  
Aisi 4140

In the present article, samples made of AISI 4140 steel, pre-treated with plasma nitriding (PN), and coated with different coatings like Titanium Carbonitride (TiCN), Aluminium Chromium Nitride (AlCrN), using Physical Vapor Deposition (PVD) technique, were investigated in terms of their microhardness, surface roughness, and dry sliding wear behaviour. Wear tests were performed with a pin-on-disc machine. Coatings were deposited on plasma nitrided samples. The wear behaviour, and wear mechanisms of TiCN- and AlCrN-coated, PN treated AISI 4140 specimens were investigated using a field emission Scanning Electron Microscope (SEM), equipped with an Energy Dispersive X-ray (EDX) analyzer. An SEM was used to study the surface morphology of the worn surfaces. Also, adhesion tests were conducted to investigate the adhesion quality of the coated specimens. The results of the investigation showed improved wear properties. Furthermore, the compound layer formed during nitriding was found to act as an intermediate hard layer, leading to superior sliding wear properties.

Effect of Aged AlN Reinforced Al-Si Alloys on Dry Sliding Wear Behaviour

2010 ◽  
Vol 126-128 ◽  
pp. 905-910 ◽  
Author(s):  
Mariyam Jameelah Ghazali ◽  
Mahamad Noor Wahab ◽  
Abdul Razak Daud ◽  
Jaharah A. Ghani
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Aluminum Nitride ◽  
Sliding Wear ◽  
Wear Test ◽  
Wear Behaviour ◽  
Dry Sliding Wear ◽  
Dry Sliding ◽  
Wear Properties ◽  
Scanning Electron

Dry sliding wear properties of aluminum nitride (AlN) reinforced aluminum silicon (Al-Si) alloy were investigated by using a pin-on-disc configuration tester. In this work, different weight percentages (5 and 10 wt%) of AlN was added into the Al-Si alloys. The samples were prepared by a stir casting process via a bottom pour technique which was then aged with a T6 condition prior to the wear test. Detailed analyses on the morphologies were conducted using scanning electron microscope (SEM) with the aid of an energy dispersive x-ray analyser (EDX). Prior to the heat treatment, the distribution of hard aluminum nitride particles that surrounded the Si phase had improved the hardness of the composites by 15%. The hardness value was found to be significantly increased about 80% for aged samples compared to un-aged samples. This was mainly contributed from precipitations of Si grain and intermetallic compounds; Mg2Si and FeSiAl5 formation in the alloys. Thus, a significant increased in wear resistance up to 56% was also observed especially at the highest applied load of 70N. Surface investigation by a scanning electron microscope (SEM) revealed that a combination of abrasion and adhesion wear mechanism was dominant for both un-aged and aged samples.

The Dry Sliding Wear of Cenosphere -Aluminium Metal Matrix Composite

2014 ◽  
Vol 23 (3) ◽  
pp. 096369351402300 ◽  
Author(s):  
V. Saravanan ◽  
P.R. Thyla ◽  
S.R. Balakrishnan
Keyword(s):  
Sliding Wear ◽  
Research Work ◽  
Wear Test ◽  
Stir Casting ◽  
Critical Parameters ◽  
Wear Behaviour ◽  
Dry Sliding Wear ◽  
Dry Sliding ◽  
Test Machine ◽  
Wear Properties

In today's rapidly developing automobile and aeronautical industries, numerous composites are widely used for various applications. This increases the need for continuous research and development of a number of composites. This research work investigated various volume % of cenosphere reinforced AA6063 composites which were made by stir casting method. These composites were surveilled with the help of chemical analysis and scanning electron microscopy to ensure the distribution and bonding between reinforcement and matrix. The design of experiments (DOE) was used to plan the wear tests and the wear results were obtained. The dry sliding wear behaviour of composites was studied by means of a pin-on-disc wear test machine and the results were compared with pure AA6063. The influences of critical parameters such as applied load, sliding speed were evaluated. Enhanced wear properties were observed with addition of cenospheres in aluminium alloy. Disc brake rotor was cast with optimum amount of cenosphere % using sand moulding.

Wear Properties of Plasma Nitrided Steel in Dry Sliding Conditions

1999 ◽  
Vol 121 (4) ◽  
pp. 802-807 ◽  
Author(s):  
B. Podgornik ◽  
J. Vizˇintin
Keyword(s):  
Tribological Properties ◽  
Plasma Nitriding ◽  
Testing Machine ◽  
Compound Layer ◽  
Wear Testing ◽  
Pulse Plasma ◽  
Dry Sliding ◽  
Wear Properties ◽  
Aisi 4140 Steel ◽  
Aisi 4140

In our study, we investigated the wear, mechanical and tribological properties of plasma and pulse plasma nitrided AISI 4140 steel compared to hardened steel. Contact surfaces of the samples were fully characterized using metallographic, SEM microscopic, microhardness, and profilometric techniques, before and after wear testing. Wear tests were performed on a pin-on-disk wear testing machine in which nitrided pins were mated to hardened ball bearing steel disks under dry sliding conditions. Results show only slight improvement of the tribological properties of AISI 4140 steel after plasma and pulse plasma nitriding compared to hardening. However, improvements become more evident when testing conditions become more severe. It was also found that compound layer should be removed from the nitrided surface to avoid impairment of the tribological properties by fracture of hard and brittle compound layer followed by the formation of hard abrasive particles.

Dry sliding wear behaviour of AA 6351-ZrB2 in situ composite at room temperature

2010 ◽  
Vol 31 (3) ◽  
pp. 1526-1532 ◽  
Author(s):  
G. Naveen Kumar ◽  
R. Narayanasamy ◽  
S. Natarajan ◽  
S.P. Kumaresh Babu ◽  
K. Sivaprasad ◽  
...  
Keyword(s):  
Sliding Wear ◽  
Room Temperature ◽  
Wear Behaviour ◽  
Dry Sliding Wear ◽  
Dry Sliding ◽  
In Situ Composite ◽  
Sliding Wear Behaviour

Dry sliding wear behaviour of AlSi–CNTs–SiCp hybrid composites

2015 ◽  
Vol 90 ◽  
pp. 148-156 ◽  
Author(s):  
O. Carvalho ◽  
M. Buciumeanu ◽  
S. Madeira ◽  
D. Soares ◽  
F.S. Silva ◽  
...  
Keyword(s):  
Sliding Wear ◽  
Hybrid Composites ◽  
Wear Behaviour ◽  
Dry Sliding Wear ◽  
Dry Sliding ◽  
Sliding Wear Behaviour

A study on tribological behaviour and analysis of ZnO reinforced AA6061 matrix composites fabricated by stir casting route

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Sakthi Sadhasivam RM ◽  
Ramanathan K. ◽  
Bhuvaneswari B.V. ◽  
Raja R.
Keyword(s):  
Wear Rate ◽  
Sliding Wear ◽  
Stir Casting ◽  
Industrial Applications ◽  
Wear Behaviour ◽  
Matrix Composites ◽  
Tribological Behaviour ◽  
Content Type ◽  
Zno Particles ◽  
The Matrix

Purpose The most promising replacements for the industrial applications are particle reinforced metal matrix composites because of their good and combined mechanical properties. Currently, the need of matrix materials for industrial applications is widely satisfied by aluminium alloys. The purpose of this paper is to evaluate the tribological behaviour of the zinc oxide (ZnO) particles reinforced AA6061 composites prepared by stir casting route. Design/methodology/approach In this study, AA6061 aluminium alloy matrix reinforced with varying weight percentages (3%, 4.5% and 6%) of ZnO particles, including monolithic AA6061 alloy samples, is cast by the most economical fabrication method, called stir casting. The prepared sample was subjected to X-ray photoelectron spectroscopy (XPS) analysis, experimental density measurement by Archimedian principle and theoretical density by rule of mixture and hardness test to investigate mechanical property. The dry sliding wear behaviour of the composites was investigated using pin-on-disc tribometer with various applied loads of 15 and 20 N, with constant sliding velocity and distance. The wear rate, coefficient of friction (COF) and worn surfaces of the composite specimens and their effects were also investigated in this work. Findings XPS results confirm the homogeneous distribution of ZnO microparticles in the Al matrix. The Vickers hardness result reveals that higher ZnO reinforced (6%) sample have 34.4% higher values of HV than the monolithic aluminium sample. The sliding wear tests similarly show that increasing the weight percentage of ZnO particles leads to a reduced wear rate and COF of 30.01% and 26.32% lower than unreinforced alloy for 15 N and 36.35% and 25% for 20 N applied load. From the worn surface morphological studies, it was evidently noticed that ZnO particles dispersed throughout the matrix and it had strong bonding between the reinforcement and the matrix, which significantly reduced the plastic deformation of the surfaces. Originality/value The uniqueness of this work is to use the reinforcement of ZnO particles with AA6061 matrix and preparing by stir casting route and to study and analyse the physical, hardness and tribological behaviour of the composite materials.

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