Characterization of plasma-sprayed carbon nanotube (CNT)-reinforced alumina coatings on ASME-SA213-T11 boiler tube steel

2017 ◽  
Vol 92 (9-12) ◽  
pp. 3225-3235 ◽  
Author(s):  
Rakesh Goyal ◽  
Buta Singh Sidhu ◽  
Vikas Chawla
Keyword(s):  
Carbon Nanotube ◽  
Tube Steel ◽  
Boiler Tube ◽  
Alumina Coatings ◽  
Boiler Tube Steel ◽  
Plasma Sprayed

Improving the high-temperature oxidation resistance of ASME-SA213-T11 boiler tube steel by plasma spraying with CNT-reinforced alumina coatings

2018 ◽  
Vol 65 (2) ◽  
pp. 217-223 ◽  
Author(s):  
Rakesh Goyal ◽  
Buta Singh Sidhu ◽  
Vikas Chawla
Keyword(s):  
High Temperature ◽  
Oxidation Resistance ◽  
High Temperature Oxidation ◽  
Composite Coatings ◽  
Tube Steel ◽  
Boiler Tube ◽  
Alumina Coatings ◽  
Temperature Oxidation ◽  
Content Type ◽  
Boiler Tube Steel

Purpose This paper aims to discuss that a conventional Al2O3, 1.5 Wt.% carbon nanotubes (CNTs)-Al2O3, 2 Wt.% CNTs-Al2O3 and 4 Wt.% CNTs-Al2O3 composite coatings were deposited with the help of Plasma spray process. Design/methodology/approach To better understand the effect of CNT reinforcement on oxidation resistance, high-temperature oxidation behaviour of conventional Al2O3, 1.5 Wt.% CNTs-Al2O3, 2 Wt.% CNTs-Al2O3 and 4 Wt.% CNTs-Al2O3 composite coatings at 900°C was compared with the performance of the uncoated ASME-SA213-T11 boiler tube steel substrate. Findings The results showed that the CNT-reinforced alumina coatings exhibited better oxidation resistance and thermal stability than uncoated ASME-SA213-T11 boiler tube steel. The coated steel substrates had a lower mass gain rate than the substrate after different oxidation times. Originality/value Limited literature is available where the CNT have been reinforced into the composite alloy powders and has been thermally spray-deposited for various surface engineering applications. This research showed that with the increase in the percentage of CNTs into the alloy powder mixture, there is a significant reduction in weight gain and hence higher resistance to oxidation.

Relationship between Splat Morphology and Property of Plasma Sprayed Alumina Coatings

2004 ◽  
Vol 449-452 ◽  
pp. 925-928 ◽  
Author(s):  
Sachio Oki
Keyword(s):  
Surface Morphology ◽  
Splat Morphology ◽  
Alumina Coatings ◽  
Spray Pattern ◽  
Coating Property ◽  
Microscope Images ◽  
Plasma Sprayed ◽  
The Relationship ◽  
Scanning Electron

New method for characterization of coating microstructures and for evaluation of coating property by means of surface morphology has been proposed. In this paper, the distribution of shape and dimensions of splat was examined using quantitative analysis of scanning electron microscope images from the surface of spray pattern as well as the surface of coating. Results obtained in this study indicate that it is necessary to analyze the spray pattern as well as the surface morphology in order to estimate the coating property by means of the distribution of splat which composes the coating. Moreover, the splats, which are in the interface between the substrate and the coating, should have the same morphology as those of the coating surface. The relationship between splat morphology and the property of coatings was discussed.

Thermal Fatigue Behavior of Boiler Tube Steel

2003 ◽  
Vol 2003.1 (0) ◽  
pp. 155-156
Author(s):  
Shingo AOI ◽  
Ryuichiro EBARA ◽  
Takashi NISHIMURA ◽  
Hiroyuki TOKUNAGA
Keyword(s):  
Thermal Fatigue ◽  
Fatigue Behavior ◽  
Tube Steel ◽  
Boiler Tube ◽  
Boiler Tube Steel ◽  
Thermal Fatigue Behavior

Microstructural evolution and oxidation resistance of T92 boiler tube steel upon long-term supercritical steam test

2017 ◽  
Vol 125 ◽  
pp. 361-366 ◽  
Author(s):  
Kejian Li ◽  
Houyu Ma ◽  
Yinsheng He ◽  
Jungchel Chang ◽  
Si-yeon Bae ◽  
...  
Keyword(s):  
Oxidation Resistance ◽  
Microstructural Evolution ◽  
Tube Steel ◽  
Boiler Tube ◽  
Boiler Tube Steel
Sign in / Sign up

Export Citation Format

Share Document