Evaluation of fracture characteristics of ceramic coatings on stainless steel substrates using circumferentially notched tensile specimens

2011 ◽  
Vol 42 (6) ◽  
pp. 1596-1602 ◽  
Author(s):  
J. Elambasseril ◽  
R.N. Ibrahim ◽  
R. Das
Keyword(s):  
Stainless Steel ◽  
Ceramic Coatings ◽  
Fracture Characteristics ◽  
Steel Substrates

Sintering of EPD Ceramic Coatings by Electron Beam

2006 ◽  
Vol 45 ◽  
pp. 1200-1205
Author(s):  
Maria Federica De Riccardis ◽  
Daniela Carbone ◽  
Emanuela Piscopiello ◽  
Antonella Rizzo ◽  
Marco Vittori Antisari
Keyword(s):  
Stainless Steel ◽  
Electron Beam ◽  
Ceramic Coating ◽  
Steel Substrate ◽  
Ceramic Coatings ◽  
Metallic Substrates ◽  
Transmission Electron ◽  
Novel Method ◽  
Pull Tests ◽  
Steel Substrates

In order to obtain wear resistant coating as well as thermal barrier on metallic substrates by EPD, the conventional high temperature treatments are inapplicable; so we used an alternative method to densify and make the electrophoretic deposit more adherent. In this work we described a novel method to obtain EPD deposits with good density and adherence to stainless steel substrate. At first, we achieved stabilized alumina and alumina-zirconia based suspensions; to improve the adhesion of ceramic coating on metal, some stainless steel substrates were sandblasted, others were coated with titanium bond layers. Then the substrates were coated by EPD; finally, we used the electron beam to treat the ceramic coating-metallic substrate system on the surface; in this way we obtained adherent and dense EPD coatings. In order to evaluate the quality and the microstructure of the coating sintering, the samples were observed by scanning and transmission electron microscopy; pull tests showed the adhesion of treated EPD coating was about one hundred times higher than that of deposited EPD coating.

scholarly journals PDC Glass/Ceramic Coatings Applied to Differently Pretreated AISI441 Stainless Steel Substrates

Materials ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 629 ◽  
Author(s):  
Milan Parchovianský ◽  
Ivana Parchovianská ◽  
Peter Švančárek ◽  
Günter Motz ◽  
Dušan Galusek
Keyword(s):  
Stainless Steel ◽  
Bond Coat ◽  
Steel Substrate ◽  
Composite Coatings ◽  
Spray Coating ◽  
Ceramic Coatings ◽  
Strong Adhesion ◽  
Cleaning Procedures ◽  
Small Cracks ◽  
Steel Substrates

In this work, the influence of different cleaning procedures on adhesion of composite coatings containing passive ceramic and commercial glasses was investigated. Two compositions (C2c, D2-PP) of double-layer polymer-derived ceramic (PDC) coating systems, composed from bond coat and a top coat, were developed. In order to obtain adherent coatings, stainless steel substrates were cleaned by four different cleaning procedures. The coatings were then deposited onto the steel substrate via spray coating. Pretreatment by subsequent ultrasonic cleaning in acetone, ethanol and deionised water (procedure U) was found to be the most effective, and the resultant C2c and D2-PP coatings, pyrolysed at 850 °C, indicated strong adhesion without delamination or cracks, propagating at the interface steel/bond coat. In the substrate treated by sandblasting and chemical etching, small cracks in the bond coat were observed under the same pyrolysis conditions. After oxidation tests, all coatings, except for those subjected to the U-treated substrates, showed significant cracking in the bond coat. The D2-PP coatings were denser than C2c, indicating better protection of the substrate.

scholarly journals Ceramic on Metal Substrates Produced by Plasma Spraying for Thick Film Technology

1983 ◽  
Vol 10 (2-3) ◽  
pp. 143-150 ◽  
Author(s):  
Leszek Gołonka ◽  
Lech Pawłowski
Keyword(s):  
Stainless Steel ◽  
Thick Film ◽  
Plasma Spraying ◽  
Ceramic Coatings ◽  
Pure Alumina ◽  
Film Conductor ◽  
Steel Substrates ◽  
Resistance Stability ◽  
Sprayed Coatings ◽  
Plasma Spraying Process

The arc plasma spraying process was applied to obtain ceramic coatings on stainless steel substrates. The outer coatings were formed from pure alumina or alumina + 2 wt. % titania mixture. The nichrome intermediate coating was applied to increase adhesion of ceramic coating to stainless steel. The X-ray analysis, metallographic and SEM investigations of the sprayed coatings were also carried out. The effect of interaction of thick film conductor and resistor compositions was studied. Conductor ink P 202 PdAg and resistor ink DP 1321 were evaluated. The TCR, resistance stability were measured as a function of firing cycles. These parameters and the resistivity of sprayed alumina were compared with standard 96% alumina substrate characteristics.

Laser Sintering of Nano-Al2O3 Powders on Plasma Sprayed Ceramic Based Coatings

2007 ◽  
Author(s):  
Lida Shen ◽  
Yinhui Huang ◽  
Zongjun Tian ◽  
Guoran Hua
Keyword(s):  
Wear Resistance ◽  
Corrosion Resistance ◽  
Plasma Spraying ◽  
Bond Coat ◽  
Continuous Wave ◽  
Ceramic Coatings ◽  
Laser Sintering ◽  
Al2o3 Ceramic ◽  
Plasma Sprayed ◽  
Steel Substrates

This paper describes an investigation of nano-Al2O3 powders reinforced ceramic coatings, which has included NiCrAl and Al2O3+13%wt.TiO2 coats pre-produced by atmosphere plasma spraying, implemented by laser sintering. Commercial NiCrAl powders were plasma sprayed onto 45 Steel substrates to give a bond coat with thickness of ∼100μm. The 600μm thick Al2O3+13%wt.TiO2 based coating was also plasma sprayed on top of the NiCrAl bond coat. With 2.5kw continuous wave CO2 laser, nano-Al2O3 ceramic powders were laser sintered on the based Coatings. The micro structure and chemical composition of the modified Al2O3+13%wt.TiO2 coatings were analyzed by such detection devices as scanning electronic microscope (SEM) and x-ray diffraction (XRD). Microhardness, wear resistance and corrosion resistance of the modified coatings were also tested and compared with that of the unmodified. The results show that the crystal grain size of Al2O3 had no obvious growth. In addition, due to the nanostructured Al2O3 ceramic phases, the coatings exhibited higher microhardness, better wear resistance and corrosion resistance than those unmodified counterparts. The complex process of plasma spraying with laser sintering as a potential effective way of the application of ceramic nano materials was also simply discussed and summarized in the end.

scholarly journals Fabrication of (100)c-oriented Mn-doped bismuth ferrite films on silicon and stainless steel substrates using calcium niobate nanosheets

2015 ◽  
Vol 123 (1437) ◽  
pp. 322-328 ◽  
Author(s):  
Kohei NAGASAKA ◽  
Naoya OSHIMA ◽  
Jin Woong KIM ◽  
Hiromi SHIMA ◽  
Akihiro AKAMA ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Bismuth Ferrite ◽  
Ferrite Films ◽  
Calcium Niobate ◽  
Steel Substrates ◽  
Mn Doped
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