Surface Engineering Development Trends and Impact of Surface Coatings and Textures on Automotive Powertrain Friction and Wear Control

2021 ◽  
Vol 10 (1) ◽  
pp. 20200091
Author(s):  
Simon C. Tung ◽  
Victor Wong
Keyword(s):  
Friction And Wear ◽  
Surface Engineering ◽  
Surface Coatings ◽  
Development Trends ◽  
Engineering Development ◽  
Automotive Powertrain

Friction and Wear Characteristics of TiC Surface Coatings in a Small Two-Stroke Utility Engine

2008 ◽  
Author(s):  
Ka Jun Ng ◽  
Farhad B. Bahaaideen ◽  
Horizon Gitano-Briggs ◽  
Zaidi Mohd. Ripin
Keyword(s):  
Friction And Wear ◽  
Surface Coatings ◽  
Wear Characteristics ◽  
Friction And Wear Characteristics

scholarly journals The role of metallurgical clusters in the development of environmental engineering: new opportunities

2020 ◽  
Vol 164 ◽  
pp. 01031
Author(s):  
Kymbat Kunanbaeva ◽  
Saule Rahimova ◽  
Andrey Pigurin
Keyword(s):  
Ferrous Metallurgy ◽  
Environmental Engineering ◽  
Development Trends ◽  
Engineering Development ◽  
Developmental Features

This paper discusses the place and role of metallurgical clusters in the development of environmental engineering. The paper is based on research materials on the development of environmental engineering and the features of the functioning of metallurgical clusters. The paper studies the development of ferrous metallurgy, development trends, and developmental features of city-forming organizations of ferrous metallurgy. The main existing areas for development of metallurgical clusters and the relevance of environmental engineering development are shown.

Fundamentals of Friction

MRS Bulletin ◽  
1998 ◽  
Vol 23 (6) ◽  
pp. 20-22 ◽  
Author(s):  
Jacqueline Krim
Keyword(s):  
Friction And Wear ◽  
Industrial Revolution ◽  
Surface Engineering ◽  
18Th Century ◽  
A Priori ◽  
Developed Countries ◽  
The United States ◽  
Moving Contact ◽  
Improved Performance ◽  
Century Development

By most recent estimates, improved attention to friction and wear would save developed countries up to 1.6% of their gross national product—over $100 billion annually in the United States alone. It is thus not surprising that tribomaterials, materials designed for use in moving contact (sliding, rolling, abrasive, etc.) have for decades attracted the interests of materials scientists and mechanical and chemical engineers. However the field of tribology is hardly a recent one. Such tribological advances as Leonardo da Vinci's design of intricate gears and bearings (some of which were not built until the Industrial Revolution provided sufficiently strong materials) and the landmark 18th century development of a timepiece allowing accurate longitudinal positioning of ships at sea (accomplished via a self-lubricating wooden gear) could easily be termed “modern,” given the overall longevity of the field.As important as tribomaterials are to technology, their discovery has usually been serendipitous. Materials scientists have frequently been able to provide explanations for why tribomaterials perform as well as they do. They have also been able to substantially improve the performance of tribomaterials through the development of new alloys, composites, and/or improved surface-engineering methods. They have however been far less successful at a priori design of tribomaterials with improved performance, largely because friction and wear processes have not been understood at the fundamental level.The late 1980s marked the advent of renewed interest in fundamental areas of tribology, sparked by a number of new experimental and theoretical techniques that made it possible to study the force of friction in geometries that are well-defined at the nanometer scale.

scholarly journals Wear Resistance of Ni-Based Alloy Coatings

2019 ◽  
Vol 2019 ◽  
pp. 1-7 ◽  
Author(s):  
Jinku Yu ◽  
Yuehua Wang ◽  
XiCan Zhao ◽  
Qinyang Li ◽  
Qi Qiao ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Sliding Wear ◽  
Friction And Wear ◽  
Pure Copper ◽  
Surface Coatings ◽  
Wear Testing ◽  
Material Surface ◽  
Hardness Testing ◽  
Jet Electrodeposition ◽  
Nickel Based Alloy

In this paper, nickel-based alloy coatings were deposited on the surface of pure copper by jet electrodeposition. The wear resistance of the coatings was studied by a material surface comprehensive performance tester under dry sliding. Hardness testing, friction, and wear testing were performed to characterize the microhardness, surface morphology, and wear resistance of the coatings. The results indicated that adding Fe and W could refine and purify the microstructure. The coatings with additions of 5 wt.% Fe and 7 wt.% W exhibited the highest wear-resistant properties. Moreover, new compound phases NiO, Fe2O3, and WO3 were found on the surface coatings, such that the microhardness was higher than that in the other coatings. Detailed discussions on the influences of Fe and W on the sliding wear are presented.

scholarly journals High temperature tribological behaviour of PVD coated tool steel and aluminium under dry and lubricated conditions

Friction ◽  
2020 ◽  
Author(s):  
Justine Decrozant-Triquenaux ◽  
Leonardo Pelcastre ◽  
Cédric Courbon ◽  
Braham Prakash ◽  
Jens Hardell
Keyword(s):  
High Temperature ◽  
Tool Steel ◽  
Aluminium Alloys ◽  
Friction And Wear ◽  
Surface Engineering ◽  
Weight Ratio ◽  
Pvd Coatings ◽  
Tribological Behaviour ◽  
Cold Forming ◽  
Coated Tool

AbstractAluminium alloys are commonly used as lightweight materials in the automotive industry. This non-ferrous family of metallic alloys offers a high versatility of properties and designs. To reduce weight and improve safety, high strength-to-weight ratio alloys (e.g. 6XXX and 7XXX), are increasingly implemented in vehicles. However, these alloys exhibit low formability and experience considerable springback during cold forming, and are therefore hot formed. During forming, severe adhesion (i.e. galling) of aluminium onto the die surface takes place. This phenomenon has a detrimental effect on the surface properties, geometrical tolerances of the formed parts and maintenance of the dies. The effect of surface engineering as well as lubricant chemistry on galling has not been sufficiently investigated. Diamond-like carbon (DLC) and CrN physical vapour deposition (PVD) coated steel have been studied to reduce aluminium transfer. However, the interaction between lubricants and PVD coatings during hot forming of aluminium alloys is not yet fully understood. The present study thus aims to characterise the high temperature tribological behaviour of selected PVD coatings and lubricants during sliding against aluminium alloy. The objectives are to first select promising lubricant-coating combinations and then to study their tribological response in a high-temperature reciprocating friction and wear tester. Dry and lubricated tests were carried out at 300 °C using a commercial polymer lubricant. Tests using DLC, CrN, CrTiN, and CrAlN coated tool steel were compared to uncoated tool steel reference tests. The initial and worn test specimen surfaces were analysed with a 3-dimensional (3D) optical profiler, scanning electron microscope (SEM) and energy dispersive X-ray spectroscope (EDS) as to understand the wear mechanisms. The results showed formation of tribolayers in the contact zone, reducing both friction and wear. The stability of these layers highly depends on both the coatings’ roughness and chemical affinity towards aluminium. The DLC and CrN coatings combined with the polymer lubricant were the most effective in reducing aluminium transfer.

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