scholarly journals Comparative Experimental Study of Tribo-Mechanical Performance of Low-Temperature PVD Based TiN Coated PRCL Systems for Diesel Engine

2018 ◽  
Vol 2018 ◽  
pp. 1-12 ◽  
Author(s):  
Ghulam Moeen Uddin ◽  
Muhammad Sajid Kamran ◽  
Jawad Ahmad ◽  
Muhammad Ghufran ◽  
Muhammad Asim ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Cast Iron ◽  
Low Temperature ◽  
Cylinder Liner ◽  
Ceramic Coatings ◽  
Grey Cast Iron ◽  
Tin Coating ◽  
Ic Engine ◽  
Trade Offs ◽  
Grey Cast

Piston ring and cylinder liner (PRCL) interface is a major contributor to the overall frictional and wear losses in an IC engine. Physical vapor deposition (PVD) based ceramic coatings on liners and rings are being investigated to address these issues. High temperature requirements for applications of conventional coating systems compromise the mechanical properties of the substrate materials. In the current study, experimental investigation of tribo-mechanical properties is conducted for various titanium nitride (TiN) coated PRCL interfaces in comparison with a commercial PRCL system. Low-temperature PVD based TiN coating is successfully achieved on the grey cast iron cylinder liner samples. Surface roughness of the grey cast iron cylinder liner substrates and the thickness of TiN coating are varied. A comprehensive comparative analysis of various PRCL interfaces is presented and all the trade-offs between various mechanical and tribological performance parameters are summarized. Coating thickness between 5 and 6 micrometres reports best tribo-mechanical behaviour. Adhesion and hardness are found to be superior for the TiN coatings deposited on cylinder liner samples with higher roughness, i.e., ~ 5-micron Ra. Maximum 62 % savings on the COF is reported for a particular PRCL system. Maximum 97% saving in cylinder liner wear rate is reported for another PRCL system.

scholarly journals Microstructure evolution and mechanical properties of drop-tube processed, rapidly solidified grey cast iron

2016 ◽  
Vol 654 ◽  
pp. 143-150 ◽  
Author(s):  
Olamilekan Oloyede ◽  
Timothy D. Bigg ◽  
Robert F. Cochrane ◽  
Andrew M. Mullis
Keyword(s):  
Mechanical Properties ◽  
Cast Iron ◽  
Microstructure Evolution ◽  
Grey Cast Iron ◽  
Drop Tube ◽  
Grey Cast ◽  
Rapidly Solidified

scholarly journals A rapid approach to estimate the mechanical properties of grey cast iron castings

2018 ◽  
Vol 24 (3) ◽  
pp. 213 ◽  
Author(s):  
Paolo Ferro ◽  
Thomas Borsato ◽  
Franco Bonollo ◽  
Stefano Padovan
Keyword(s):  
Mechanical Properties ◽  
Cast Iron ◽  
Master Curve ◽  
Mechanical Characterization ◽  
Grey Cast Iron ◽  
Iron Castings ◽  
Solidification Kinetics ◽  
Grey Cast ◽  
Microstructure Morphology

<p>Grey cast iron is a brittle or quasi-brittle material very sensitive to the microstructure morphology deriving from its solidification kinetics. This is the reason why different zones of a casting, even with the same thickness, may be characterized by different mechanical properties according to the solidification time. The mechanical characterization of the alloy made by following the Standards that refer to values obtained from separately casted samples is insufficient for a designer who needs to know the specific properties of the material in each zone of interest of the casting. In this work a method is described to predict the mechanical properties of castings made of GH 190 cast iron that correlates the solidification times with the ultimate tensile strength through a master curve, supposed to depend only on alloy chemical composition. This predictive approach was successfully validated with experimental mechanical characterization of a real industrial casting.</p>

Dry Sliding Wear Behaviour of Titanium and Boron Carbide Nano Coated Grey Cast Iron Cylinder Liner

2014 ◽  
Vol 592-594 ◽  
pp. 1291-1295 ◽  
Author(s):  
S. Ananth ◽  
T.V. Moorthy
Keyword(s):  
Surface Roughness ◽  
Cast Iron ◽  
Wear Test ◽  
Cylinder Liner ◽  
Grey Cast Iron ◽  
Wear Behaviour ◽  
Dry Sliding Wear ◽  
Pin On Disc ◽  
Grey Cast ◽  
Engine Components

Among several nanocoatings, Ti and B4C hard coating shows excellent wear performance in cutting tool operation. This hard nanocoating Implemented on GCI substrate using EB-PVD coating is to make them suitable for engine components and to act as a protective coating against surface wear and reduce the wear of the components. The wear test was conducted using Pin-on-disc equipment at the room temperature and surface roughness was measured using surface roughness tester.The wear parameters such as sliding speed and sliding distance were kept constant and the load is varied. Coating hardness was measured using Brinell hardness tester.The investigation shows that Ti, B4C coatings have significant effect on GCI sleeve. Also, the result shows that the coating of Ti, B4C improved the wear resistance of the grey cast iron.

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