New-Generation Ceramic Coatings for High-Temperature Applications by Liquid Feedstock Plasma Spraying

2020 ◽  
pp. 1371-1412
Author(s):  
S. Joshi ◽  
N. Markocsan ◽  
P. Nylén ◽  
G. Sivakumar
Keyword(s):  
High Temperature ◽  
Plasma Spraying ◽  
Ceramic Coatings ◽  
Liquid Feedstock ◽  
New Generation ◽  
Temperature Applications

Numerical analysis of plasma-sprayed ceramic coatings for high-temperature applications

1996 ◽  
Vol 4 (6) ◽  
pp. 679-702 ◽  
Author(s):  
Ioannis St. Doltsinis ◽  
Kai-Uwe Haller ◽  
Rainer Handel
Keyword(s):  
High Temperature ◽  
Numerical Analysis ◽  
Ceramic Coatings ◽  
Plasma Sprayed ◽  
Temperature Applications

Suspension Plasma Spraying of Triboactive Coatings for High Temperature Applications

2010 ◽  
Vol 438 ◽  
pp. 139-146
Author(s):  
Martin Erne ◽  
Daniel Kolar ◽  
Kai Möhwald ◽  
Friedrich Wilhelm Bach
Keyword(s):  
High Temperature ◽  
Plasma Spraying ◽  
Ceramic Coatings ◽  
Suspension Plasma Spraying ◽  
Dry Sliding ◽  
Oxide Ceramic ◽  
Functional Coatings ◽  
Oxide Ceramic Coatings ◽  
Near Net Shape ◽  
Sprayed Coatings

In recent years, suspension plasma spraying (SPS) was investigated regarding the spraying of functional coatings with deterministic abilities. In this contribution the possibilities are discussed to achieve oxide ceramic coatings based on titania by SPS, which show a reduction of their coefficient of friction under dry sliding conditions. Besides the possibility to mix different feedstock suspensions in the process, the achievable low thickness and homogenous microstructure of suspension-sprayed coatings shall allow an operation in fields, where high demands towards the adhesion, cohesion and near net shape are made.

Electron microscopy studies of plasma-sprayed materials

1983 ◽  
Vol 41 ◽  
pp. 70-71
Author(s):  
K.R. Subramanian ◽  
A.H. King ◽  
H. Herman
Keyword(s):  
Plasma Spraying ◽  
Substrate Surface ◽  
Flame Temperature ◽  
Ceramic Coatings ◽  
Metallic Substrates ◽  
Hot Plasma ◽  
Almost All ◽  
Plasma Sprayed ◽  
Hostile Environments ◽  
Plasma Spraying Process

Plasma spraying is a technique which is used to apply coatings to metallic substrates for a variety of purposes, including hardfacing, corrosion resistance and thermal barrier applications. Almost all of the applications of this somewhat esoteric fabrication technique involve materials in hostile environments and the integrity of the coatings is of paramount importance: the effects of process variables on such properties as adhesive strength, cohesive strength and hardness of the substrate/coating system, however, are poorly understood.Briefly, the plasma spraying process involves forming a hot plasma jet with a maximum flame temperature of approximately 20,000K and a gas velocity of about 40m/s. Into this jet the coating material is injected, in powder form, so it is heated and projected at the substrate surface. Relatively thick metallic or ceramic coatings may be speedily built up using this technique.

Microstructural characterization of a rapidly solidified Al-Fe-V-Si alloy for elevated temperature applications

1988 ◽  
Vol 46 ◽  
pp. 550-551
Author(s):  
R. E. Franck ◽  
J. A. Hawk ◽  
G. J. Shiflet
Keyword(s):  
High Temperature ◽  
Elevated Temperature ◽  
Grain Growth ◽  
Volume Fraction ◽  
Microstructural Characterization ◽  
Second Phase ◽  
Microstructural Stability ◽  
Elevated Temperature Strength ◽  
Temperature Applications

Rapid solidification processing (RSP) is one method of producing high strength aluminum alloys for elevated temperature applications. Allied-Signal, Inc. has produced an Al-12.4 Fe-1.2 V-2.3 Si (composition in wt pct) alloy which possesses good microstructural stability up to 425°C. This alloy contains a high volume fraction (37 v/o) of fine nearly spherical, α-Al12(Fe, V)3Si dispersoids. The improved elevated temperature strength and stability of this alloy is due to the slower dispersoid coarsening rate of the silicide particles. Additionally, the high v/o of second phase particles should inhibit recrystallization and grain growth, and thus reduce any loss in strength due to long term, high temperature annealing.The focus of this research is to investigate microstructural changes induced by long term, high temperature static annealing heat-treatments. Annealing treatments for up to 1000 hours were carried out on this alloy at 500°C, 550°C and 600°C. Particle coarsening and/or recrystallization and grain growth would be accelerated in these temperature regimes.

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