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An Investigation of Phase Crystallinity in Laser Modified Yttria Stabilized Zirconia (YSZ) Thermal Barrier Coating

This paper presents laser surface modification process of plasma sprayed yttria stabilized zirconia (YSZ) thermal barrier coating (TBC) for enhanced hardness properties and low surface roughness. A 300W JK300HPS Nd: YAG laser was used to process YSZ TBC sample surface. The parameters selected for ex...

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Main Authors: Mohamed Reza Zalani, Mohamed Suffian, S. N., Aqida, Mohd Toff, Mohd Radzi
Format: Article
Language:English
Published: Trans Tech Publications, Switzerland 2014
Subjects:
TJ Mechanical engineering and machinery
Online Access:http://umpir.ump.edu.my/id/eprint/9518/1/An%20Investigation%20of%20Phase%20Crystallinity%20in%20Laser%20Modified%20Yttria%20Stabilized%20Zirconia%20%28YSZ%29%20Thermal%20Barrier%20Coating.pdf.pdf
http://umpir.ump.edu.my/id/eprint/9518/
http://www.scientific.net/KEM.611-612.1601
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spelling my.ump.umpir.95182018-01-22T07:18:07Z http://umpir.ump.edu.my/id/eprint/9518/ An Investigation of Phase Crystallinity in Laser Modified Yttria Stabilized Zirconia (YSZ) Thermal Barrier Coating Mohamed Reza Zalani, Mohamed Suffian S. N., Aqida Mohd Toff, Mohd Radzi TJ Mechanical engineering and machinery This paper presents laser surface modification process of plasma sprayed yttria stabilized zirconia (YSZ) thermal barrier coating (TBC) for enhanced hardness properties and low surface roughness. A 300W JK300HPS Nd: YAG laser was used to process YSZ TBC sample surface. The parameters selected for examination were laser power, pulse repetition frequency (PRF) and residence time. Micrographs of the TBC system were captured using EVO 15 Scanning Electron Microscope (SEM). Surface roughness was measured using 2-dimensional stylus profilometer. X-ray diffraction analysis (XRD) was conducted to measure phase crystallinity of the laser-modified coating surface. X-ray diffraction patterns were recorded in the 2θ range of 10 to 80° using Bruker D8 Advance system with 0.7Å wavelength from a copper source (~1.5Å). The laser modified surface exhibited higher crystallinity compared to the as-sprayed samples. The presence of tetragonal phase was detected in the as-sprayed and laser processed samples. The hardness properties of laser modified TBC increased 15% of the as-sprayed sample. These finding are significant to development of thermal barrier coating design optimization for enhanced surface properties of semi-solid forming die. Trans Tech Publications, Switzerland 2014 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/9518/1/An%20Investigation%20of%20Phase%20Crystallinity%20in%20Laser%20Modified%20Yttria%20Stabilized%20Zirconia%20%28YSZ%29%20Thermal%20Barrier%20Coating.pdf.pdf Mohamed Reza Zalani, Mohamed Suffian and S. N., Aqida and Mohd Toff, Mohd Radzi (2014) An Investigation of Phase Crystallinity in Laser Modified Yttria Stabilized Zirconia (YSZ) Thermal Barrier Coating. Key Engineering Materials, 611 (612). pp. 1601-1607. ISSN 1013-9826 (print); 1662-9795 (online) http://www.scientific.net/KEM.611-612.1601 DOI: 10.4028/www.scientific.net/KEM.611-612.1601
institution Universiti Malaysia Pahang
building UMP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Pahang
content_source UMP Institutional Repository
url_provider http://umpir.ump.edu.my/
language English
topic TJ Mechanical engineering and machinery
spellingShingle TJ Mechanical engineering and machinery
Mohamed Reza Zalani, Mohamed Suffian
S. N., Aqida
Mohd Toff, Mohd Radzi
An Investigation of Phase Crystallinity in Laser Modified Yttria Stabilized Zirconia (YSZ) Thermal Barrier Coating
description This paper presents laser surface modification process of plasma sprayed yttria stabilized zirconia (YSZ) thermal barrier coating (TBC) for enhanced hardness properties and low surface roughness. A 300W JK300HPS Nd: YAG laser was used to process YSZ TBC sample surface. The parameters selected for examination were laser power, pulse repetition frequency (PRF) and residence time. Micrographs of the TBC system were captured using EVO 15 Scanning Electron Microscope (SEM). Surface roughness was measured using 2-dimensional stylus profilometer. X-ray diffraction analysis (XRD) was conducted to measure phase crystallinity of the laser-modified coating surface. X-ray diffraction patterns were recorded in the 2θ range of 10 to 80° using Bruker D8 Advance system with 0.7Å wavelength from a copper source (~1.5Å). The laser modified surface exhibited higher crystallinity compared to the as-sprayed samples. The presence of tetragonal phase was detected in the as-sprayed and laser processed samples. The hardness properties of laser modified TBC increased 15% of the as-sprayed sample. These finding are significant to development of thermal barrier coating design optimization for enhanced surface properties of semi-solid forming die.
format Article
author Mohamed Reza Zalani, Mohamed Suffian
S. N., Aqida
Mohd Toff, Mohd Radzi
author_facet Mohamed Reza Zalani, Mohamed Suffian
S. N., Aqida
Mohd Toff, Mohd Radzi
author_sort Mohamed Reza Zalani, Mohamed Suffian
title An Investigation of Phase Crystallinity in Laser Modified Yttria Stabilized Zirconia (YSZ) Thermal Barrier Coating
title_short An Investigation of Phase Crystallinity in Laser Modified Yttria Stabilized Zirconia (YSZ) Thermal Barrier Coating
title_full An Investigation of Phase Crystallinity in Laser Modified Yttria Stabilized Zirconia (YSZ) Thermal Barrier Coating
title_fullStr An Investigation of Phase Crystallinity in Laser Modified Yttria Stabilized Zirconia (YSZ) Thermal Barrier Coating
title_full_unstemmed An Investigation of Phase Crystallinity in Laser Modified Yttria Stabilized Zirconia (YSZ) Thermal Barrier Coating
title_sort investigation of phase crystallinity in laser modified yttria stabilized zirconia (ysz) thermal barrier coating
publisher Trans Tech Publications, Switzerland
publishDate 2014
url http://umpir.ump.edu.my/id/eprint/9518/1/An%20Investigation%20of%20Phase%20Crystallinity%20in%20Laser%20Modified%20Yttria%20Stabilized%20Zirconia%20%28YSZ%29%20Thermal%20Barrier%20Coating.pdf.pdf
http://umpir.ump.edu.my/id/eprint/9518/
http://www.scientific.net/KEM.611-612.1601
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score 13.211869

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