{"id":4329,"date":"2021-01-20T11:19:36","date_gmt":"2021-01-20T16:19:36","guid":{"rendered":"https:\/\/spraysensors-cn.tecnar.com\/?p=4329"},"modified":"2024-04-15T11:26:14","modified_gmt":"2024-04-15T15:26:14","slug":"the-influence-of-plasma-composition-in-the-thermal-cyclic-performance-of-yttria-stabilized-zirconia-8ysz-thermal-barrier-coatings-tbcs","status":"publish","type":"post","link":"https:\/\/spraysensors-cn.tecnar.com\/en\/the-influence-of-plasma-composition-in-the-thermal-cyclic-performance-of-yttria-stabilized-zirconia-8ysz-thermal-barrier-coatings-tbcs\/","title":{"rendered":"The Influence of Plasma Composition in the Thermal Cyclic Performance of Yttria-Stabilized Zirconia (8YSZ) Thermal Barrier Coatings (TBCs)"},"content":{"rendered":"<p>In the combustion chambers of gas turbine engines, ZrO2-8wt.%Y2O3 (YSZ) TBCs are commonly applied by air plasma spray (APS) using Ar-\/H2-based plasmas via legacy torches. Alternatively, N2\/H2 plasmas could be used with the potential of increasing overall deposition efficiency (DE) and hence reduce the consumption of high-value feedstock powder. Also, by increasing DE, spraying time would be reduced, thereby providing another contribution to bring down production costs. In this work, TBCs were prepared with Ar- and N2-based plasmas with different YSZ powders using Metco 9MB legacy torch. The use of N2-based plasma resulted in higher particle temperature and lower particle velocity values than those provided by the Ar-based plasma. The measured DEs were between 41-43 and 53-60% for the Ar- and N2-based plasmas, respectively. This represents a ~\u200940% increase in the DE. The coatings produced with the two different plasmas exhibited equivalent porosity levels ~\u200911-13%. On average, the lowest thermal conductivity values were given by a N2-based LD-B YSZ TBC. In the furnace cycle test, the performance of the TBCs prepared with the N2-based plasma was superior to that of the TBCs prepared with the Ar plasma, and also exceeding that of an industrial APS TBC benchmark.<\/p>\n<p><a class=\"btn-tec black\" href=\"https:\/\/spraysensors-cn.tecnar.com\/wp-content\/uploads\/2024\/04\/JTST_301-2_2021_59-68.pdf\" target=\"_blank\" rel=\"noopener\">Link to publication<\/a><\/p>\n<p>Key words: APS, Ar-H2, deposition efficiency (DE), N2-H2, TBC, thermal conductivity, thermal cycling (FCT), YSZ<\/p>\n<p><em><small>Originally published at Journal of Thermal Spray Technology (20 January 2021, Volume 30, pages 59\u201368, 2021)<br \/>\nBy Bruno Guerreiro, Rogerio S. Lima, Nicholas Curry, Matthias Leitner, Karl Korner<\/small><\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the combustion chambers of gas turbine engines, ZrO2-8wt.%Y2O3 (YSZ) TBCs are commonly applied by air plasma spray (APS) using [&#8230;]<\/p>\n<p><a class=\"btn btn-secondary understrap-read-more-link\" href=\"https:\/\/spraysensors-cn.tecnar.com\/en\/the-influence-of-plasma-composition-in-the-thermal-cyclic-performance-of-yttria-stabilized-zirconia-8ysz-thermal-barrier-coatings-tbcs\/\">Read More&#8230;<\/a><\/p>\n","protected":false},"author":20,"featured_media":4330,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[40],"tags":[],"class_list":["post-4329","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-accuraspray-4-0-2"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.5 - 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