scholarly journals Formation of Nanostructures on the Solid Surface

2021 ◽  
Author(s):  
Alexander V. Vakhrushev
Keyword(s):  
Mathematical Modeling ◽  
Wear Resistance ◽  
Surface Modification ◽  
Solid Surface ◽  
Laser Surface ◽  
Solid Surfaces ◽  
Theoretical Methods ◽  
Nanocomposite Layer ◽  
Comparative Review ◽  
Surface Laser

Forming nanostructures on the solids surface is one of the promising nanotechnological processes. It has been established that changes in the atomic structure of the solid surface due to the nanostructures formation result both in a significant change in various physical properties of the surface, and in an increase in its durability, strength, hardness, wear resistance. There are many different methods for forming nanostructures on solid surfaces: surface modification with nano-elements (nanoparticles, fullerenes and fullerites, graphene and nanotubes), formation of a nanocomposite layer on the surface, forming quantum dots and whiskers on the surface, implanting ions into the solid surface, laser surface treatment and other processes. The above processes are very complex and for their optimization require detailed research both by experimental and theoretical methods of mathematical modeling. The aim of this chapter was to provide a comparative review of different methods of forming nanostructures on the solids surface and mathematical modeling of these processes various aspects.

Improved corrosion and wear resistance of Mg alloys via laser surface modification of Al on AZ31B

2012 ◽  
Vol 206 (8-9) ◽  
pp. 2308-2315 ◽  
Author(s):  
Sameer R. Paital ◽  
Ananya Bhattacharya ◽  
Marco Moncayo ◽  
Yee Hsien Ho ◽  
Kristopher Mahdak ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Surface Modification ◽  
Corrosion And Wear ◽  
Laser Surface ◽  
Mg Alloys ◽  
Laser Surface Modification

Improving wear resistance of pure copper by laser surface modification

2011 ◽  
Vol 258 (4) ◽  
pp. 1599-1604 ◽  
Author(s):  
Mingyu Li ◽  
Mingju Chao ◽  
Erjun Liang ◽  
Jumei Yu ◽  
Junji Zhang ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Surface Modification ◽  
Pure Copper ◽  
Laser Surface ◽  
Laser Surface Modification

Wear Behavior of Laser-Hardened GCr15 Steel under Lubricated Sliding Conditions

2009 ◽  
Vol 628-629 ◽  
pp. 697-702 ◽  
Author(s):  
Sheng Lei ◽  
Quan Kun Liu ◽  
Yu Ping Liu ◽  
Heng Li
Keyword(s):  
Wear Resistance ◽  
Surface Modification ◽  
Wear Rate ◽  
Tribological Properties ◽  
Wear Mechanism ◽  
Sliding Wear ◽  
Laser Surface ◽  
Ferrous Alloys ◽  
Gcr15 Steel ◽  
Lubricated Sliding

Microstructure, microhardness and tribological properties of laser hardened GCr15 steel were investigated in this paper. The wear resistance under lubricated sliding conditions was compared between specimens treated with laser and those of conventionally hardened. The tribological properties of laser surface-quenched GCr15 steel specimens were slightly better due to the effects of the microstructure hardening, high hardness and toughness, with the wear rate (in the order of 10-6mg/Nm) lower than that of the conventionally treated specimens. At the steady state, the frictional coefficient of laser-treated samples had no obvious difference from that of the conventionally treated samples. The wear mechanism for both cases was similar, generally involved surface fatigue wear and slight abrasion wear. LeiQ.K. Liu S. Lei Introduction H. Li In recent years, among the various surface modification methods, laser-induced surface modification has gained much attention for achieving the desired properties for applications[1]. This method is mainly used for ferrous alloys which undergo martensitic transformation and thus form a very hard surface layer with negligible surface roughness and distortion[2]. Some ideas demonstrated that the wear rate at a particular contact pressure can be strongly influenced by the microstructure of the steel, but there is also contrary idea that under the conditions of mild wear, the microstructural constituents of steels have no significant influence on the wear rate, although they affect the rate of severe wear. Previous studies of the authors demonstrated that under the dry sliding wear conditions, laser surface-hardened specimens of ferrous alloys exhibited enhanced wear resistance than conventionally hardened specimens. The aim of the study is to investigate the lubricated sliding wear behaviors of laser surface hardened GCr15 steel specimens and to compare the effect of the different microstructure compositions for laser transformation hardening with those of conventionally hardened and quenched. Moreover, the wear properties of the GCr15 steel and its corresponding wear mechanism under the lubricated wear conditions will also be studied.

EFFECT OF SURFACE TREATMENT ON ABRASIVE WEAR RESISTANCE OF SEEDER COULTER FLAP

2016 ◽  
Vol 23 (03) ◽  
pp. 1650007 ◽  
Author(s):  
MARTA PACZKOWSKA ◽  
JAROSŁAW SELECH ◽  
ADAM PIASECKI
Keyword(s):  
Wear Resistance ◽  
Surface Modification ◽  
Abrasive Wear ◽  
Surface Treatment ◽  
Surface Condition ◽  
Thermal Spraying ◽  
Abrasive Wear Resistance ◽  
Laser Surface ◽  
Flame Spraying ◽  
Laser Surface Modification

The aim of this study was to investigate the effect of the surface condition of the coulters of a Poznaniak mechanical seeder working in a sand medium on their abrasive wear resistance. Two types of coulter flap surface treatments were performed. The first treatment method was flame spraying, performed with the use of Eutalloy 10112 powder and other method was laser surface modification consisting in remelting a piece of the coulter flap tip by means of TRUMPF’s CO2 molecular laser. The study involved the use of a purpose-built laboratory test stand dedicated to testing wear in a sandy medium. The study revealed that surface treatment changes surface microstructure and thus improves its hardness by [Formula: see text] to 3 times, which translates into two- to six-fold improvement in wear resistance per hectare of cultivated field. Laser surface modification is more economical than thermal spraying and that the coulter flap surface area modified by thermal spraying was much greater than in the case of laser remelting, and finally that the average wear measured as a weight loss of tested coulters was comparable, one can conclude that in the analyzed context laser surface modification will probably prove more efficient than flame spraying. The study showed that there exist ready-to-use technologies for improving operational performance and delaying terminal wear.

scholarly journals Investigation of the effect of laser surface modification on the hardness and wear resistance of a titanium alloy

2021 ◽  
Vol 2131 (5) ◽  
pp. 052083
Author(s):  
L V Belyaev ◽  
A V Zhdanov
Keyword(s):  
Wear Resistance ◽  
Titanium Alloy ◽  
Surface Modification ◽  
Coefficient Of Friction ◽  
Laser Surface ◽  
Laser Modification ◽  
Laser Surface Modification ◽  
Before And After ◽  
Coefficient Of Elasticity ◽  
Modification Of The Surface

Abstract The effect of laser modification of the surface on the value of the coefficient of elasticity, hardness, coefficient of friction and the amount of wear of the counter body when testing products made of a deformable titanium alloy was investigated. It was found that the indicators of hardness and wear resistance of a titanium alloy depend on the modes of laser modification. These dependencies are extreme in nature, they have maxima and minima. The quantitative values of hardness and wear resistance indicators for the specified material before and after laser treatment of its surface in various modes are given.

scholarly journals Laser Surface Modification of Ti6Al4V-Cu for Improved Microhardness and Wear Resistance Properties

2017 ◽  
Vol 20 (4) ◽  
pp. 1143-1152 ◽  
Author(s):  
Mutiu Folorunsho Erinosho ◽  
Esther Titilayo Akinlabi ◽  
Sisa Pityana ◽  
Gbadebo Owolabi
Keyword(s):  
Wear Resistance ◽  
Surface Modification ◽  
Laser Surface ◽  
Laser Surface Modification
Sign in / Sign up

Export Citation Format

Share Document