Abstract
Experimental studies have been carried out to establish the possibility of using vibratory machining technology through shock-wave transmission for oxide coating preparation on aluminum-alloyed machine components and also to discuss the technological possibilities of applying vibration mechanochemical solid lubricant coatings based on MoS2 to improve the surface quality and performance properties of machine component parts. The coating characteristics are determined by measuring and comparing certain tribological properties of the samples before processing, after normal coating, and after vibratory coating process. A deeper study with a scanning microscope was made by comparing result of normal and vibratory coating. The vibratory coating shows a reduction of grain sizes, a regular orientation of the grain, and a dense grain structure leading to the formation of a thin layer covered by a film orientated parallel to the surface of friction giving an imparted surface finish. The reduction of microroughness is also accompanied with good performances in terms of increasing in wear resistance and decreasing in coefficient of friction. This reflects the presence of complex influence of mechanical and chemical components in the formation of coating on superficial layers during lower shock-wave vibration giving at the end structured ameliorated state of surface that leads to an increase in the part lifespan and equally shows technological opportunities that can be used to improve surface quality and performance properties of machine component parts.
Highlights
IntroductionSpecial attention is paid on the improvement of the competitiveness of machines and units (Pereira, Fernandes, & Diz, 2010)
In modern technological literature, special attention is paid on the improvement of the competitiveness of machines and units (Pereira, Fernandes, & Diz, 2010)
To sum up, it is clear to conclude that vibration processing in the environment of polyethylene spheres allows combining some technological stages: (i) Preparation of a surface under covering can be conducted by cleaning of pollution and oxides, activation of superficial layer as a result of plastic
Summary
Special attention is paid on the improvement of the competitiveness of machines and units (Pereira, Fernandes, & Diz, 2010). Coating is a method by which an artificial surface can be generated to the outer surface of the substrate material to protect it from corrosion and wear that can be considered like the two deteriorating phenomena which are the major sources of losses in industrial machineries and exposed structures These reduce the lifespan of industrial components and increase the Essola et al International Journal of Mechanical and Materials Engineering (2019) 14:8 maintenance cost and expenditure for replacement of their parts. Since corrosion and wear both occur at the surface of the substrate, they can be reduced or eliminated by surface treatment (Dehghan Ghadikolaei & Vahdati 2015; Shetty, Emigh & Krogstada 2019) In this respect, the metallic surface coating gives a practical solution (Wang, Tzeng, Chen, & Chang, 2012) since machine parts and structures are designed for specific applications (Babichev, Essola, et al, 2011; Fotovvati, Namdari, & Dehghanghadikolaei, 2019)
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