Effect of laser treatment on the structure and wear and frictional properties of plasma-sprayed coatings of self-fluxing alloys. I. Structural characteristics of coatings partially fused by laser radiation

1988 ◽  
Vol 27 (1) ◽  
pp. 11-14
Author(s):  
N. V. Spirldonov ◽  
V. A. Protasevich ◽  
T. I. Samodeeva
Keyword(s):  
Laser Radiation ◽  
Laser Treatment ◽  
Structural Characteristics ◽  
Frictional Properties ◽  
Plasma Sprayed Coatings ◽  
Plasma Sprayed ◽  
Sprayed Coatings

Local Laser Treatment of Tribological Plasma Sprayed Coatings

1998 ◽  
Author(s):  
T. Otmianowski ◽  
B. Antoszewski ◽  
W. Zorawski
Keyword(s):  
Laser Beam ◽  
Laser Treatment ◽  
Coating Layer ◽  
Tribological Test ◽  
Test Pieces ◽  
Steel Base ◽  
Plasma Sprayed Coatings ◽  
Plasma Sprayed ◽  
Sprayed Coatings

Abstract In the article the results of set of experiments concerning the changes in microstructure of plasma sprayed Al2O3, Cr2O3 and W2C coatings of tribological test pieces obtained with use of locally applied laser beam treatment are given and discussed. The improvement of sprayed on coating layer adhesion to the steel base was ascertained and evaluated. The possibilities of the application of the described technology for development and production of slide elements of tribological joints are noticed.

Recombination of silica and zirconia into zircon by means of laser treatment of plasma-sprayed coatings

2008 ◽  
Vol 43 (6) ◽  
pp. 1948-1957 ◽  
Author(s):  
S. Schelz ◽  
F. Enguehard ◽  
N. Caron ◽  
D. Plessis ◽  
B. Minot ◽  
...  
Keyword(s):  
Laser Treatment ◽  
Plasma Sprayed Coatings ◽  
Plasma Sprayed ◽  
Sprayed Coatings

The effect of alloying on the structural characteristics of the oxide phase in plasma-sprayed coatings

1997 ◽  
Vol 36 (9-10) ◽  
pp. 487-490
Author(s):  
A. E. Ostranitsa ◽  
P. V. Nazarenko ◽  
I. E. Polishchuk ◽  
A. Y. Koval'
Keyword(s):  
Structural Characteristics ◽  
Oxide Phase ◽  
Plasma Sprayed Coatings ◽  
Plasma Sprayed ◽  
Sprayed Coatings ◽  
Effect Of Alloying

scholarly journals Microstructure and Oxidation Resistance of Laser Remelted Plasma Sprayed Nicraly Coating

2016 ◽  
Vol 61 (2) ◽  
pp. 1183-1191
Author(s):  
D. Niemiec ◽  
G. Moskal ◽  
Ł. Carski
Keyword(s):  
Laser Treatment ◽  
Oxidation Resistance ◽  
Laser Melting ◽  
Nicraly Coating ◽  
Plasma Sprayed Coatings ◽  
Plasma Sprayed ◽  
The Impact ◽  
Sprayed Coatings ◽  
Microscopic Investigations

Abstract The article presents results of research relating to the impact of laser treatment done to the surface of plasma sprayed coatings NiCrAlY. Analysis consisted microstructure and oxidation resistance of coatings subjected to two different laser melting surfaces. The test were performed at a temperature 1000°C the samples were removed from the furnace after 25, 300, 500, 750 and 1000 hours. The investigations range included analysis of top surface of coatings by XRD characterization oxides formed types and microscopic investigations of coatings morphology

Properties of plasma-sprayed coatings treated by laser radiation

1998 ◽  
Vol 37 (9-10) ◽  
pp. 483-486 ◽  
Author(s):  
A. A. Alfintseva ◽  
A. V. Paustovskii ◽  
E. K. Fen’ ◽  
S. V. Petrov ◽  
T. V. Kurinnaya ◽  
...  
Keyword(s):  
Laser Radiation ◽  
Plasma Sprayed Coatings ◽  
Plasma Sprayed ◽  
Sprayed Coatings

scholarly journals Surface modification of ZrO2-10 wt. % CaO plasma sprayed coating

2016 ◽  
Vol 64 (4) ◽  
pp. 937-942 ◽  
Author(s):  
J. Iwaszko ◽  
K. Kudła
Keyword(s):  
Structural Characteristics ◽  
Structural Examination ◽  
Gas Tungsten Arc ◽  
Plasma Sprayed Coatings ◽  
Electron Microscopes ◽  
Sprayed Coating ◽  
Plasma Sprayed ◽  
Scanning Electron Microscopes ◽  
Sprayed Coatings ◽  
Substantial Heterogeneity

Abstract Oxide ZrO2-CaO plasma-sprayed coatings were remelted using the modified gas tungsten arc welding (GTAW) method. The original two-burner set, generating a free independent arc, was used in the treatment. The samples were subjected to structural examination using light and scanning electron microscopes, and energy-dispersive X-ray microanalysis (EDX). A substantial heterogeneity of the plasma-sprayed coatings was found, observable with a laminar structure, significant porosity, and step change in the concentration of the elements. Significant changes in the structure were found after the remelting treatment. Both microscopic and EDX investigations showed that the treatment leads to a reduction in the heterogeneity of the chemical composition of the coating material and to a loss of structural characteristics typical for plasma-sprayed coatings.

CHARACTERIZATION OF AS-SPRAYED AND LASER-TREATED ZIRCONIA-BASED PLASMA SPRAYED COATINGS

1990 ◽  
Vol 51 (C5) ◽  
pp. C5-393-C5-402
Author(s):  
A. FERRIERE ◽  
G. FLAMANT ◽  
J.-F. ROBERT ◽  
P. PEKSHEV ◽  
I. SMUROV ◽  
...  
Keyword(s):  
Plasma Sprayed Coatings ◽  
Plasma Sprayed ◽  
Sprayed Coatings
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