{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T11:19:53Z","timestamp":1777461593246,"version":"3.51.4"},"reference-count":21,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2016,9,28]],"date-time":"2016-09-28T00:00:00Z","timestamp":1475020800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Yttria-stabilized zirconia (YSZ)-based thermal barrier coating (TBC) has been integrated with thermographic phosphors through air plasma spray (APS) for in-depth; non-contact temperature sensing. This coating consisted of a thin layer of Dy-doped YSZ (about 40 \u00b5m) on the bottom and a regular YSZ layer with a thickness up to 300 \u00b5m on top. A measurement system has been established; which included a portable; low-cost diode laser (405 nm); a photo-multiplier tube (PMT) and the related optics. Coating samples with different topcoat thickness were calibrated in a high-temperature furnace from room temperature to around 900 \u00b0C. The results convincingly showed that the current sensor and the measurement system was capable of in-depth temperature sensing over 800 \u00b0C with a YSZ top layer up to 300 \u00b5m. The topcoat thickness was found to have a strong effect on the luminescent signal level. Therefore; the measurement accuracy at high temperatures was reduced for samples with thick topcoats due to strong light attenuation. However; it seemed that the light transmissivity of YSZ topcoat increased with temperature; which would improve the sensor\u2019s performance at high temperatures. The current sensor and the measurement technology have shown great potential in on-line monitoring of TBC interface temperature.<\/jats:p>","DOI":"10.3390\/s16101490","type":"journal-article","created":{"date-parts":[[2016,9,28]],"date-time":"2016-09-28T10:56:13Z","timestamp":1475060173000},"page":"1490","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":13,"title":["Phosphor-Doped Thermal Barrier Coatings Deposited by Air Plasma Spray for In-Depth Temperature Sensing"],"prefix":"10.3390","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8116-5215","authenticated-orcid":false,"given":"Di","family":"Peng","sequence":"first","affiliation":[{"name":"Key Lab of Education Ministry for Power Machinery and Engineering, School of Mechanical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China"},{"name":"Gas Turbine Research Institute, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lixia","family":"Yang","sequence":"additional","affiliation":[{"name":"School of Material Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China"},{"name":"Gas Turbine Research Institute, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tao","family":"Cai","sequence":"additional","affiliation":[{"name":"Key Lab of Education Ministry for Power Machinery and Engineering, School of Mechanical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China"},{"name":"Gas Turbine Research Institute, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yingzheng","family":"Liu","sequence":"additional","affiliation":[{"name":"Key Lab of Education Ministry for Power Machinery and Engineering, School of Mechanical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China"},{"name":"Gas Turbine Research Institute, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xiaofeng","family":"Zhao","sequence":"additional","affiliation":[{"name":"School of Material Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China"},{"name":"Gas Turbine Research Institute, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zhiqi","family":"Yao","sequence":"additional","affiliation":[{"name":"Corporate Technology, Siemens Ltd. China, 7 Wangjing Zhonghuan Nanlu, Beijing 100102, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2016,9,28]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"73","DOI":"10.1016\/S1270-9638(02)00003-2","article-title":"Some recent trends in research and technology of advanced thermal barrier coatings","volume":"7","author":"Schulz","year":"2003","journal-title":"Aerosp. Sci. Technol."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/0257-8972(87)90003-X","article-title":"Current status of thermal barrier coatings: An overview","volume":"30","author":"Miller","year":"1987","journal-title":"Surf. Coat. Technol."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"2615","DOI":"10.1063\/1.1148174","article-title":"Remote thermometry with thermographic phosphors: Instrumentation and applications","volume":"67","author":"Allison","year":"1997","journal-title":"Rev. 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