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.

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.

In Situ Synthesis of Fe–TiC Nanocomposite Coating on CK45 Steel From Ilmenite Concentrate by Plasma-Spray Method

2016 ◽  
Vol 139 (1) ◽  
Author(s):  
Alireza Firouzbakht ◽  
Mansour Razavi ◽  
Mohammad Reza Rahimipour
Keyword(s):  
Wear Resistance ◽  
Plasma Spray ◽  
Raw Materials ◽  
Nanocomposite Coating ◽  
In Situ Synthesis ◽  
Phase Identification ◽  
Wear Resistant ◽  
Spray Process ◽  
Ilmenite Concentrate

These days wear-resistant coatings including Fe–TiC composites because of their properties such as high melting point, hardness, and wear resistance are used in different fields such as aerospace, transport, cutting, and abrasive. In situ synthesis of Fe–TiC nanocomposite as a wear-resistant coating by the plasma-spray process is the purpose of this study. Ilmenite concentrate and carbon black were used as raw materials. Three kinds of powders with different conditions were prepared and sprayed on CK45 steel substrates in constant conditions. Microstructure, phase identification, wear resistance, and hardness of coated samples were determined. The results showed that activated sample was synthesized during the plasma spray, but in situ synthesize did not happen for inactive sample which was sprayed by plasma spray. Also, wear resistance and hardness tests showed by synthesis of Fe–TiC composite in coated samples, wear resistance, and hardness were increased.

scholarly journals Exploiting Suspension Plasma Spraying to Deposit Wear-Resistant Carbide Coatings

Materials ◽  
2019 ◽  
Vol 12 (15) ◽  
pp. 2344 ◽  
Author(s):  
Satyapal Mahade ◽  
Karthik Narayan ◽  
Sivakumar Govindarajan ◽  
Stefan Björklund ◽  
Nicholas Curry ◽  
...  
Keyword(s):  
Plasma Spraying ◽  
High Performance ◽  
Suspension Plasma Spraying ◽  
Coating Materials ◽  
Wear Resistant ◽  
Thermal Spray Process ◽  
Wear Resistant Coatings ◽  
Spray Process ◽  
Carbide Coatings

Titanium- and chromium-based carbides are attractive coating materials to impart wear resistance. Suspension plasma spraying (SPS) is a relatively new thermal spray process which has shown a facile ability to use sub-micron and nano-sized feedstock to deposit high-performance coatings. The specific novelty of this work lies in the processing of fine-sized titanium and chromium carbides (TiC and Cr3C2) in the form of aqueous suspensions to fabricate wear-resistant coatings by SPS. The resulting coatings were characterized by surface morphology, microstructure, phase constitution, and micro-hardness. The abrasive, erosive, and sliding wear performance of the SPS-processed TiC and Cr3C2 coatings was also evaluated. The results amply demonstrate that SPS is a promising route to manufacture superior wear-resistant carbide-based coatings with minimal in situ oxidation during their processing.

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.

A Complete Predictor Methodology for the Plasma Spray Process

1996 ◽  
Author(s):  
D.J. Varacalle ◽  
K. Barnett
Keyword(s):  
Regression Analysis ◽  
Plasma Spray ◽  
Polynomial Regression ◽  
Mechanical Performance ◽  
Initial Conditions ◽  
Particle Interaction ◽  
Experimental Studies ◽  
Coating Properties ◽  
Spray Process ◽  
Plasma Spray Process

Abstract To enhance usage of the plasma spray process, a better physical understanding of the process is required, which entails a synergistic mix of analytical and empirical studies. Better understanding can lead to development of optimal thermal spray coatings for future applications. This study presents an analytical method that can be used for these purposes. Experimental and analytical studies were conducted to investigate gas, particle, and coating dynamics and the resulting coating properties in the plasma spray process for the Tribaloy 800 powder system. Historical full-factorial statistically designed experiments were the basis for the analytical-experimental comparisons. The thermal plasma produced by a commercial plasma spray torch was then numerically modeled from the electrodes to the standoff distance in the free plume for sixteen experiments. This information was then used as boundary conditions to solve the plasma/particle interaction problem for the experiments. The predicted temperature and velocity of the droplets at the spray distance were then used as initial conditions to a coating dynamics code. Multiple polynomial regression analysis was then used to establish the sequential relationship between the process parameters (i.e., power, total flow, hydrogen flow), the coating properties (porosity, oxides), and the coating mechanical performance properties (tensile strength, microhardness, superficial hardness). The equations derived from the regression analysis were used to construct a predictor code for the process. The code predicts the process and coating attributes reasonably well. The predicted coating properties exhibit excellent correlation with the actual properties obtained from the experimental studies in the range of the parameter settings.

Sign in / Sign up

Export Citation Format

Share Document