contributor author | Pint, Bruce A. | |
contributor author | Lance, Michael J. | |
contributor author | Allen Haynes, J. | |
date accessioned | 2019-03-17T10:15:44Z | |
date available | 2019-03-17T10:15:44Z | |
date copyright | 10/4/2018 12:00:00 AM | |
date issued | 2019 | |
identifier issn | 0742-4795 | |
identifier other | gtp_141_03_031004.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4256029 | |
description abstract | Several factors are being investigated that affect the performance of thermal barrier coatings (TBC) for use in land-based gas turbines where coatings are mainly thermally sprayed. This study examined high velocity oxygen fuel (HVOF), air plasma-sprayed (APS), and vacuum plasma-sprayed (VPS) MCrAlYHfSi bond coatings with APS YSZ top coatings at 900–1100 °C. For superalloy 247 substrates and VPS coatings tested in 1 h cycles at 1100 °C, removing 0.6 wt %Si had no effect on average lifetime in 1 h cycles at 1100 °C, but adding 0.3%Ti had a negative effect. Rod specimens were coated with APS, HVOF, and HVOF with an outer APS layer bond coating and tested in 100 h cycles in air + 10%H2O at 1100 °C. With an HVOF bond coating, initial results indicate that 12.5 mm diameter rod specimens have much shorter 100 h cycle lifetimes than disk specimens. Much longer lifetimes were obtained when the bond coating had an inner HVOF layer and outer APS layer. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | The Effect of Coating Composition and Geometry on Thermal Barrier Coatings Lifetime | |
type | Journal Paper | |
journal volume | 141 | |
journal issue | 3 | |
journal title | Journal of Engineering for Gas Turbines and Power | |
identifier doi | 10.1115/1.4041309 | |
journal fristpage | 31004 | |
journal lastpage | 031004-7 | |
tree | Journal of Engineering for Gas Turbines and Power:;2019:;volume( 141 ):;issue: 003 | |
contenttype | Fulltext | |