Dry Sliding Wear Behaviour of Al 7075 T6 Coated by Plasma Spray Process

2014 ◽  
Vol 984-985 ◽  
pp. 551-556
Author(s):  
D.S. Manoj Abraham ◽  
H. Kanagasabapathy ◽  
S. Kartheesan ◽  
M.C. Shaji
Keyword(s):  
Composite Coating ◽  
Plasma Spraying ◽  
Plasma Spray ◽  
Wear Behaviour ◽  
Dry Sliding Wear ◽  
Spray Process ◽  
Plasma Spray Process ◽  
Nickel Carbide ◽  
Al 7075 ◽  
High Flexibility

-Al7075 T6 alloys are widely used in the aircraft, automotive and die and mold making industry, yet at any time aluminium components should be designed with a third body or in an harsh environment they must be protected with an overlying coating inorder to increase their useful lifespan and improve their surface performance especially in wear and corrosion. The most wide spread technique used to modify the surface properties of Al7075 T6 among them one of the most promosing technology is plasma spraying. It is widely used to manufacture anti-wear and anti-corrosion coatings on to a large class of bulk materials. Extreme performance and high flexibility are the Main characteristic of the coatings achievable by Plasma Spray process. In this work Nickel Carbide + Chromium Composite coating was successfully prepared and deposied with various thicknesses on the Aluminium alloy surface. Nickel Carbide + Chromium composite coating exhibits a significantly increased wear resistance property in the material. The result obtained in this work indicated that the plasma spraying method will be the promising process to coat the composite coating on aluminium based alloy.Keywords: Al 7075 T6, Plasma Spray Process, Nickel Carbide + Chromium

scholarly journals RESEARCH ON THE PLASMA SPRAY PROCESS APPLYING THE FINITE ELEMENT METHOD / PLAZMINIO PURŠKIMO PROCESŲ TYRIMAS BAIGTINIŲ ELEMENTŲ METODU

2015 ◽  
Vol 6 (6) ◽  
pp. 666-671
Author(s):  
Raimonda Lukauskaitė ◽  
Jonas Garjonis ◽  
Olegas Černašėjus
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Plasma Spraying ◽  
Plasma Spray ◽  
Nickel Particle ◽  
Plasma Stream ◽  
The Finite Element Method ◽  
Spray Process ◽  
Plasma Spray Process ◽  
Element Method

The article investigates the physical processes of plasma spraying. The application of the finite element method has assisted in establishing the distribution of the voltage of the plasma arc and current density in the plasma stream during numerical simulation. With reference to the results of experimental data, the real location of an anode spot of the electric arc in the plasma spray process has been evaluated. The paper has calculated the values of electromagnetic Lorentz forces and established their influence on plasma flow. With the help of the two-layer model for the semi-molten nickel particle, contact between the particle and substrate during plasma spraying has been simulated. Straipsnyje nagrinėjami fizikiniai procesai, vykstantys plazminio purškimo metu. Taikant baigtinių elementų metodą, skaitinio modeliavimo metu buvo nustatytas plazmos lanko įtampos ir srovės tankio pasiskirstymas plazmos sraute. Panaudojant eksperimentinių rezultatų duomenis, buvo įvertinta reali elektros lanko anodo dėmės padėtis plazminio purškimo procese. Buvo apskaičiuotos elektromagnetinių Lorenco jėgų reikšmės ir nustatyta jų įtaka plazmos srautui. Taikant dvisluoksnės aplydytos nikelio dalelės modelį, buvo imituojamas dalelės kontaktas su substratu purškiant.

Study on the Long-Term Stability of Plasma Spraying

2000 ◽  
Author(s):  
L. Leblanc ◽  
C. Moreau
Keyword(s):  
Plasma Spraying ◽  
Plasma Spray ◽  
Particle State ◽  
Spray Process ◽  
Long Term Stability ◽  
Plasma Spray Process ◽  
Long Term Experiment ◽  
The Stability ◽  
Sprayed Coatings

Abstract The damaging of the electrodes during spraying can affect the reproducibility of the plasma spray process. Indeed, this may influence the plasma characteristics and the energy transfer to the sprayed particles resulting in significant changes in the coating attributes. In this paper, results from a detailed investigation on the stability of plasma spraying are presented. Specifically designed diagnosis tools were used to study the evolution of key parameters of a plasma spray process during a long-term experiment. A comprehensive analysis is carried out on the collected set of data, with an emphasis on the correlation that may exist among them. Results show significant variations in the particle state and gun characteristics with the spraying time. These variations are reflected in the microstructure of the sprayed coatings. The investigation also gives some indication on how the spray process could be controlled.

Composite Fe/TiC Powders for Wear Resistance Coatings Using Plasma Spray Process

1997 ◽  
Author(s):  
P. Vitiaz ◽  
T. Azarova ◽  
T. Talako ◽  
A. Ilyuschenko ◽  
S. Steinhauser ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Plasma Spraying ◽  
Plasma Spray ◽  
Coating Properties ◽  
Iron Matrix ◽  
Wear Resistant ◽  
Wear Resistant Coatings ◽  
Spray Process ◽  
Plasma Spray Process ◽  
Wear Resistance Coatings

Abstract This work evaluates the potential of using new competitive powders of Fe/TiC system for plasma spraying of wear resistant coatings. To improve coating properties, Cr and Ni were added to the iron matrix. The results of complex investigations of plasma coatings from such materials are presented.

Development of hydroxyapatite coatings by solution precursor plasma spray process and their microstructural characterization

2017 ◽  
Vol 318 ◽  
pp. 39-49 ◽  
Author(s):  
Rolando T. Candidato ◽  
Paweł Sokołowski ◽  
Lech Pawłowski ◽  
Gisele Lecomte-Nana ◽  
Catalin Constantinescu ◽  
...  
Keyword(s):  
Plasma Spray ◽  
Microstructural Characterization ◽  
Solution Precursor Plasma Spray ◽  
Spray Process ◽  
Plasma Spray Process ◽  
Hydroxyapatite Coatings ◽  
Solution Precursor
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