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Plesovskikh1,c 1Orenburg State University, Orenburg, Russia aivan.kurnosckin@yandex.ru, bkrilova27@yandex.ru, cjokkerpokker56@mail.ru Keywords: laser thermal treatment, light-absorbing coating, absorption coefficient, tribomechanical properties, thermal hardening.
To annihilate this factor, a light-absorbing coating was developed and applied to the surface of the element before laser hardening.
The metal substrate of 5CrNiM steel preserves the required mechanical properties (σv = 63.5 kgf/mm2; KCU = 6.4 kgf/mm2), providing for rigidity and durability of the product under static loading and tearing.
Skhirtladze, Processes of mechanical and physical-chemical processing of materials: University Class Book, TNT, Moscow, 2012
Proskurin, Hardening and Surface Treatment in Mechanical Engineering: University Students Book, OSU, Orenburg, 2004

Diamond is considered as an ideal coating material for hard metals due to its extraordinary mechanical, chemical and thermal properties [1, 2].
This is due to its unique properties such as, heat conductivity, wear and corrosion resistant, nearly similar lattice match with diamond and electro catalytic properties [7].
Moreover, coating characteristics and mechanical properties are easy to be controlled by manipulating the deposition parameters such as bath temperature, current density, pH, gap between electrodes or by adding special additives to the electrolytic solution [12].
One of important factors that affect quality of the output of the electroplating process is the gap between anode and the cathode.
Varying the distance between electrodes will result in different layer thickness that may also contribute in affecting the coating hardness.

Wear is a complex problem, which cannot be easily predicted from basic mechanical properties (hardness and fracture toughness), tribological studies of the developed materials are indispensable [2].
Tribological performance of the sliding pairs depends on many factors: environmental conditions, sliding velocity, load, surface quality, microstructure of the mated materials.
The mechanical properties of LPS-SiC are strongly affected by its microstructure, which can be controlled by the phase transformation of SiC.
Belosi, Effect of annealing treatments on microstructure and mechanical properties of liquid-phase-sintered silicon carbide, J.
Seo, Influence of small amount of sintering additives on unlubricated sliding wear properties of SiC ceramics, Ceram.

There are many factors affecting the steel structure corrosion in the splash zone, such as corrosion problems caused by seawater and effect of impacted brought by the ocean wave.
The corrosive damage of the steel structure will also affects the safety in production, even results in discard ahead of time.
Zn15Al coating also has good mechanical properties.
That is to say the combination property of Zn15Al coating is better than that of pure zinc coating and aluminum coating.
Although FeBSiNbCrMn amorphous coating has a poor corrosion resistance, but its has high hardness; 2) The selectivity of the anticorrosion and wear-resistant coatings for steel used in splash zone were enriched through the contrasting study of the properties of the four high-velocity arc spraying coatings.

Introduction Boron carbide B4C is technical ceramic with superior mechanical and chemical properties.
The development of microstructure, mechanical and tribological properties change was revealed according to phase's transformation.
Instrumented indentation (Zwick Z 2.5/TS1S tester, EN ISO-14577-1) was used to quantify the mechanical properties of the composites.
The phase transformation influenced the mechanical properties change in B4C/Al composites.
Table 1 Mechanical properties of B4C/Al composites.

Introduction Improving the reliability of repaired vehicles (units), no doubt, depends on the properties of restoring friction surfaces.
Wear The process of wear of parts is accompanied by complex physical and chemical phenomena and a variety of factors influencing it [1].
Accompanying types of wear are molecular-mechanical and corrosion-mechanical wear with all its types, which affect wear and under certain conditions can become the leading wear processes.
Factors, intervals and levels of variation are presented in Table 1.
As a result of the tests, a second-order regression equation was obtained, which takes into account factors such as the number of wire turns and the width of a square wire that affect the reduction of the engine running-in time. 4.

The main reasons for that process are supplement corrosion factors such as a wide range of temperature, humidity as well as chemical agents in the environment.
In this article results of different properties (mechanical, electrical) of electrically conductive concrete are discussed including their alterations due to sulphate attack.
Scheme used to measure electrical properties 2.
Study of electrical properties.
It was found that significant absorption of sulfates is accompanied by a loss of physical and mechanical properties due to the formation of pores and voids.

It offers the castings with high integrity and less porosity and allows subsequent heat treatments for enhancement of mechanical properties.
These rheological properties of the slurry make the SSP as a unique and effective process for the near net-shape casting with enhanced mechanical properties.
The reduced porosity level in the SSP components, which allows subsequent heat treatments for improved mechanical properties, is another attractive advantage.
Since the mechanical properties of the final cast products are significantly affected by the castability of the reheated billets, the SSP of Mg alloy components requires reliable production of the high quality Mg billets for the subsequent SSP.
One of the most important factors in casting Mg alloy billets is the safety of the process.

Research on the properties of austenitic stainless steel under different carburizing atmosphere proportion, with hardness, wear resistance and corrosion resistance as the properties characterization.
The results shows that C3H8:H2=1:40 have better properties with the hardness of 950 HV0.05, the friction coefficient of about 0.25, which showed a better wear resistance.
Introduction Low temperature plasma carburizing as one of the methods to improve the mechanical properties has been widely used in the daily research.
There are many factors that can influence the effect of carburizing, such as substrate material[4], carburizing temperature[5], carburizing time[6], and so on.
(2) There is a need to ensure a proper carburizing atmosphere proportion, which will have a great effect on the surface properties

The study clearly depicts the gradient nature in the structure and mechanical properties of the FGM castings produced by centrifugal casting method.
Heat treatment improves the hardness as well as other mechanical properties due to the redistribution of Cu-Al2 phases [8].
[3] Chirita, G, Stefanescu, I, Centrifugal versus Gravity casting techniques over mechanical properties, Anales de Mecánica de la Fractura , 1 (2006) 317-322
[8] Li Z, Samuel A M, Samuel F H, Ravindran C, Valtierra S, Doty H W., Factors affecting dissolution of Al2Cu phase in 319 alloys, AFS Trans, 2 (2003) 241–254
[10] Barresi J, Kerr M J, Wang H, Couper M J, Effect of magnesium, iron and cooling rate on mechanical properties of Al–7Si–Mg foundry alloys, AFS Trans, (2000)563–570