{"title":"利用大气等离子喷涂技术制备的新型 Hf6Ta2O17/YSZ 热电堆的热循环特性","authors":"Chunyu Cheng, Tiantian Lv, Bohao Song, Yadong Chai, Junhui Luo, Guifang Li, Li Yang, Yichun Zhou","doi":"10.1016/j.surfin.2024.105050","DOIUrl":null,"url":null,"abstract":"<div><p>Hf<sub>6</sub>Ta<sub>2</sub>O<sub>17</sub>, with low thermal conductivity, high thermal expansion coefficient, and excellent fracture toughness, was a promising candidate ceramic top coat material of thermal barrier coating (TBC). A novel Hf<sub>6</sub>Ta<sub>2</sub>O<sub>17</sub>/YSZ double ceramic top coat prepared by atmospheric plasma spraying (APS) was applied to study the role of the microstructure and mechanical property on the thermal cycling property at 1200 °C. Results show that the rapid decomposition of Hf<sub>6</sub>Ta<sub>2</sub>O<sub>17</sub> occurred during the spraying process. As the increased spraying power, more HfO<sub>2</sub> phases were observed in the Hf<sub>6</sub>Ta<sub>2</sub>O<sub>17</sub>/YSZ TBCs. Besides, the porosity of the Hf<sub>6</sub>Ta<sub>2</sub>O<sub>17</sub> ceramic top coat decreased with the increased spraying power, resulting in the elastic modulus of the Hf<sub>6</sub>Ta<sub>2</sub>O<sub>17</sub> ceramic top coat enhancement. The highest cycles at 1200 °C were obtained for the Hf<sub>6</sub>Ta<sub>2</sub>O<sub>17</sub>/YSZ TBCs with the lowest elastic modulus and least HfO<sub>2</sub> phases, and were twice as long as the cycles of the single YSZ TBCs. The chemical reaction between HfO<sub>2</sub> and Hf<sub>6</sub>Ta<sub>2</sub>O<sub>17</sub> might have contributed to the cracking of the Hf<sub>6</sub>Ta<sub>2</sub>O<sub>17</sub>/YSZ TBCs. This work provides a new option for the preparation and development of the ternary oxides by APS.</p></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"53 ","pages":"Article 105050"},"PeriodicalIF":5.7000,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Thermal cycling property of the novel Hf6Ta2O17/YSZ TBCs prepared by atmospheric plasma spraying technology\",\"authors\":\"Chunyu Cheng, Tiantian Lv, Bohao Song, Yadong Chai, Junhui Luo, Guifang Li, Li Yang, Yichun Zhou\",\"doi\":\"10.1016/j.surfin.2024.105050\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Hf<sub>6</sub>Ta<sub>2</sub>O<sub>17</sub>, with low thermal conductivity, high thermal expansion coefficient, and excellent fracture toughness, was a promising candidate ceramic top coat material of thermal barrier coating (TBC). A novel Hf<sub>6</sub>Ta<sub>2</sub>O<sub>17</sub>/YSZ double ceramic top coat prepared by atmospheric plasma spraying (APS) was applied to study the role of the microstructure and mechanical property on the thermal cycling property at 1200 °C. Results show that the rapid decomposition of Hf<sub>6</sub>Ta<sub>2</sub>O<sub>17</sub> occurred during the spraying process. As the increased spraying power, more HfO<sub>2</sub> phases were observed in the Hf<sub>6</sub>Ta<sub>2</sub>O<sub>17</sub>/YSZ TBCs. Besides, the porosity of the Hf<sub>6</sub>Ta<sub>2</sub>O<sub>17</sub> ceramic top coat decreased with the increased spraying power, resulting in the elastic modulus of the Hf<sub>6</sub>Ta<sub>2</sub>O<sub>17</sub> ceramic top coat enhancement. The highest cycles at 1200 °C were obtained for the Hf<sub>6</sub>Ta<sub>2</sub>O<sub>17</sub>/YSZ TBCs with the lowest elastic modulus and least HfO<sub>2</sub> phases, and were twice as long as the cycles of the single YSZ TBCs. The chemical reaction between HfO<sub>2</sub> and Hf<sub>6</sub>Ta<sub>2</sub>O<sub>17</sub> might have contributed to the cracking of the Hf<sub>6</sub>Ta<sub>2</sub>O<sub>17</sub>/YSZ TBCs. This work provides a new option for the preparation and development of the ternary oxides by APS.</p></div>\",\"PeriodicalId\":22081,\"journal\":{\"name\":\"Surfaces and Interfaces\",\"volume\":\"53 \",\"pages\":\"Article 105050\"},\"PeriodicalIF\":5.7000,\"publicationDate\":\"2024-09-09\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Surfaces and Interfaces\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2468023024012069\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Surfaces and Interfaces","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2468023024012069","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Thermal cycling property of the novel Hf6Ta2O17/YSZ TBCs prepared by atmospheric plasma spraying technology
Hf6Ta2O17, with low thermal conductivity, high thermal expansion coefficient, and excellent fracture toughness, was a promising candidate ceramic top coat material of thermal barrier coating (TBC). A novel Hf6Ta2O17/YSZ double ceramic top coat prepared by atmospheric plasma spraying (APS) was applied to study the role of the microstructure and mechanical property on the thermal cycling property at 1200 °C. Results show that the rapid decomposition of Hf6Ta2O17 occurred during the spraying process. As the increased spraying power, more HfO2 phases were observed in the Hf6Ta2O17/YSZ TBCs. Besides, the porosity of the Hf6Ta2O17 ceramic top coat decreased with the increased spraying power, resulting in the elastic modulus of the Hf6Ta2O17 ceramic top coat enhancement. The highest cycles at 1200 °C were obtained for the Hf6Ta2O17/YSZ TBCs with the lowest elastic modulus and least HfO2 phases, and were twice as long as the cycles of the single YSZ TBCs. The chemical reaction between HfO2 and Hf6Ta2O17 might have contributed to the cracking of the Hf6Ta2O17/YSZ TBCs. This work provides a new option for the preparation and development of the ternary oxides by APS.
期刊介绍:
The aim of the journal is to provide a respectful outlet for ''sound science'' papers in all research areas on surfaces and interfaces. We define sound science papers as papers that describe new and well-executed research, but that do not necessarily provide brand new insights or are merely a description of research results.
Surfaces and Interfaces publishes research papers in all fields of surface science which may not always find the right home on first submission to our Elsevier sister journals (Applied Surface, Surface and Coatings Technology, Thin Solid Films)