scholarly journals Calculation of residual stresses in plasma spray coatings taking into account the build-up process

2019 ◽  
Vol 1368 ◽  
pp. 042079
Author(s):  
V I Bogdanovich ◽  
M G Giorbelidze
Keyword(s):  
Residual Stresses ◽  
Plasma Spray ◽  
Spray Coatings ◽  
Plasma Spray Coatings

Methods of Determination and Control of Residual Stresses in Plasma Spray Coatings

1997 ◽  
Author(s):  
L. Dekhtyar ◽  
A. Kleyman ◽  
V. Andreychuk ◽  
S. Berman
Keyword(s):  
Residual Stresses ◽  
Thermal Spray ◽  
Plasma Spray ◽  
Thermal Spraying ◽  
Thermal Spray Coatings ◽  
Coating Deposition ◽  
Spray Coatings ◽  
Plasma Spray Coatings ◽  
And Control ◽  
Elastic Characteristics

Abstract Residual stresses exert profound influence on the longevity of parts with thermal spray coatings. The distribution and value of the residual stresses depend on method of coating deposition, composition of the applied material, parameters of thermal spraying and methods of post-treatment. Therefore, the study of the influence of the various technological factors on the residual stresses in the plasma spray coatings is very important. Due to heterogeneity of the coating, residual stresses can be determined only by the experimentation by using new methods which take into consideration real values of elastic characteristics and density of elementary layers. Methods and formulas for the calculations of the residual stresses in coatings deposited on bars, rings, discs, cylinders are presented. Experimental results for the various thermal spray coatings are also shown. These results can be used for the optimization of coating deposition and would supplement the existing database.

Microstructure and Properties of Plasma Spray Coatings Prepared from Ti-Zr-Ni Quasicrystalline Powders

2007 ◽  
Vol 534-536 ◽  
pp. 89-92 ◽  
Author(s):  
Hyun Kwang Seok ◽  
Yu Chan Kim ◽  
Frédéric Prima ◽  
Eric Fleury
Keyword(s):  
Plasma Spray ◽  
Volume Fraction ◽  
Icosahedral Phase ◽  
Vacuum Plasma Spray ◽  
Laves Phases ◽  
Electrochemical Tests ◽  
Spray Coatings ◽  
Plasma Spray Coatings ◽  
Zro2 Phase ◽  
Coating Layers

This works deals with the deposition of Ti-Zr-Ni icosahedral quasicrystalline powders by low vacuum plasma spray technique and the performances of the resulting coating layers. The microstructure of the coatings, as analyzed by X-ray diffraction and TEM techniques, consisted of nanometer-sized W-Ti50Zr35Ni15 1/1 cubic approximant and TiZrNi Laves phases as well as a low volume fraction of submicrometer-sized ZrO2 phase. The absence of the icosahedral phase in the coating layers was explained by the loss of Ti during plasma spraying. The shift in the composition and the presence of the ZrO2 phase within the coating layers are believed to be responsible for the reduced microhardness and corrosion performances evaluated by electrochemical tests in a Hanks’ Balance Salt Solution at 37oC.

Pressure-Based Liquid Feed System for Suspension Plasma Spray Coatings

2011 ◽  
Vol 20 (4) ◽  
pp. 967-973 ◽  
Author(s):  
Elliot M. Cotler ◽  
Dianying Chen ◽  
Ronald J. Molz
Keyword(s):  
Plasma Spray ◽  
Suspension Plasma Spray ◽  
Feed System ◽  
Spray Coatings ◽  
Plasma Spray Coatings ◽  
Liquid Feed

Characterization of Cr2O3-TiO2-CaF2 Coatings Using Plasma Spray Process

1997 ◽  
Author(s):  
A.Ph. Ilyuschenko ◽  
N.I. Shipica ◽  
P.A. Vityaz ◽  
A.A. Yerstak ◽  
A.Y. Beliaev
Keyword(s):  
Wear Resistance ◽  
Plasma Spray ◽  
Composite Coatings ◽  
Wear Testing ◽  
Material System ◽  
Composite Powders ◽  
Spray Coatings ◽  
Spray Process ◽  
Plasma Spray Coatings ◽  
High Temperature Synthesis

Abstract This paper presents the results of a study on the wear resistance of plasma spray coatings made from Cr2O3-TiO2-CaF2 powders. The composite powders used were produced by self-propagating high temperature synthesis. They were then applied under various conditions in order to optimize the material system, spray process, and application procedures. Based on the results of microstructural examination and wear testing, the thermally sprayed composite coatings have excellent wear resistance, good adhesion, and are self-lubricating at high temperatures.

Sign in / Sign up

Export Citation Format

Share Document