Study of the Splat-Substrate Interface for a PEEK Coating Plasma-Sprayed onto Aluminum Substrates

2009 ◽  
Vol 19 (1-2) ◽  
pp. 42-48 ◽  
Author(s):  
J. Wu ◽  
P. R. Munroe ◽  
B. Withy ◽  
M. M. Hyland
Keyword(s):  
Substrate Interface ◽  
Plasma Sprayed ◽  
Aluminum Substrates ◽  
Peek Coating

Use of Different Process Gases for Manufacturing Isolating Alumina Coatings by Flame Spraying with Cords

2021 ◽  
Author(s):  
M. Hauer ◽  
M. Meyer ◽  
D. Billieres ◽  
C. Bricquet ◽  
F. Gerstgrasser ◽  
...  
Keyword(s):  
Volume Resistivity ◽  
Alpha Phase ◽  
Flame Spraying ◽  
Flame Spray ◽  
Alumina Coatings ◽  
Spray Coatings ◽  
Aluminum Hydroxides ◽  
Fine Microstructure ◽  
Plasma Sprayed ◽  
Aluminum Substrates

Abstract This study assesses the quality of flame-sprayed alumina coatings produced from recently developed alumina cord using argon and compressed air as atomizing gases. Coatings of different thicknesses were deposited on aluminum substrates and then analyzed using optical microscopy, X-ray diffraction, and resistivity measurements. The coatings, particularly those sprayed with argon, had fine microstructure and higher surface and volume resistivity than flame-spray coatings made from alumina cord in the past. They were also found to have higher alpha phase content than plasma-sprayed coatings, regardless of the atomizing gas used. The effect of humidity and the possible formation of aluminum hydroxides are also addressed.

Surface Properties of Different Travel Speeds and Powder-Feeder Rates for Plasma-Sprayed Coatings on Aluminum Substrates

2013 ◽  
Vol 717 ◽  
pp. 84-89
Author(s):  
Ming Der Jean ◽  
Maw Tyan Sheen
Keyword(s):  
Surface Properties ◽  
Travel Speed ◽  
Factors Affecting ◽  
Powder Feeder ◽  
Good Adhesive ◽  
Plasma Sprayed Coatings ◽  
Plasma Sprayed ◽  
Aluminum Substrates ◽  
Sprayed Coatings ◽  
Hardened Surface

The surface properties of plasma-sprayed partial Y2O3 stabilized ZrO2 coatings with different travel speed and powder-feeder rate of sprayed gun on aluminum substrates have been reported. Several coatings analytical parameters were studied and these factors affecting coating properties were carried out in the plasma-sprayed experiments. Experimental results have shown that the structure of the sprayed coatings that makes relatively diverse in texture for most of the coatings was examined by a SEM. The hardened strength with a low level of a slant of powder-feeder rate became significantly weaker as the travel speed was decreased. Interestingly, the structure of the specimens for the travel speed of 30mm/s is more homogenous than that of the others, indicating a coating with good homogenous structures, while the interfaced structure of the specimens for the powder-feeder rate of 25 mm/s is more homogenous than that of the others, indicating a coating with good adhesive structures. The tendency of the effect of travel speed of sprayed gun on the hardened surface of coatings at powder feeder rate of sprayed gun varied to 30g/min from 20g/min seems to be apparent.

Characterization of Al2O3 and SiC Particles, Reinforced Al Powders, and Plasma Sprayed Wear Resistance Coatings

2000 ◽  
Author(s):  
Fr.-W. Bach ◽  
T. Duda ◽  
Z. Babiak ◽  
P. Bohling ◽  
B. Formanek
Keyword(s):  
Wear Resistance ◽  
Atmospheric Plasma ◽  
Mechanically Alloyed ◽  
Aluminum Coatings ◽  
Hard Particles ◽  
Sic Particles ◽  
Plasma Sprayed ◽  
Aluminum Substrates ◽  
Wear Resistance Coatings

Abstract Aluminum coatings reinforced with either Al2O3 or SiC particles were deposited onto aluminum substrates and subjected to various tests. The coatings were made with mechanically alloyed powders via atmospheric plasma spraying (APS). Both types of coatings had uniformly distributed hard particles, porosities in the range of 4 to 5%, and bond strengths of around 20 MPa. The wear resistance of the SiC-reinforced coatings, however, was almost 35% higher than the coatings containing Al2O3. X-ray examination (XRD) showed that the Al2O3 particles undergo partial phase transformation during spraying, making them more prone to wear.

scholarly journals Thermally Sprayed Porous PEEK Coating for Biomedical Implants

2018 ◽  
Vol 1 (1) ◽  
pp. 32-36
Author(s):  
Satish Tailor ◽  
◽  
N Vashishtha ◽  
Ankur Modi ◽  
SC Modi ◽  
...  
Keyword(s):  
Orthopedic Implants ◽  
Titanium Coating ◽  
The Novel ◽  
Biomedical Implants ◽  
Thermal Spray Process ◽  
Spray Process ◽  
Plasma Sprayed ◽  
Peek Coating ◽  
Thermally Sprayed ◽  
Highly Porous

The present study reports the novel results of microstructural and mechanical properties of highly porous Polyetheretherketone (PEEK) coating. PEEK is already considered as a material for biomedical implants. A new kind of approach is proposed for manufacturing of highly porous PEEK coating on a dense PEEK coating for orthopedic implants and successfully implemented to create novel biomimetic porous PEEK coating by means of thermal spray process. To imitate the structure of natural bone, as-sprayed top PEEK coating has porosity of more than 60% vol. and pore sizes of 30-80 μm. Mechanical results of dense PEEK coating show that PEEK coating exhibited good strength, hardness (20 HV0.1) and good bonding strength (15 MPa) with the metal substrate. Thermal sprayed porous PEEK coating that can be used for future implants instead of plasma sprayed titanium coating on dense PEEK implants because porous PEEK improves the bone-implant interface joining compared to plasma-sprayed titanium coating on PEEK.

Structural study near the film/substrate interface of a plasma sprayed tin coating on low carbon steel

2006 ◽  
Vol 416 (1-2) ◽  
pp. 183-187 ◽  
Author(s):  
G. Vourlias ◽  
N. Pistofidis ◽  
G. Stergioudis ◽  
E.K. Polychroniadis
Keyword(s):  
Carbon Steel ◽  
Structural Study ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Tin Coating ◽  
Substrate Interface ◽  
Film Substrate ◽  
Plasma Sprayed

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.

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