Rong Tu , Xiangyu Chen , Yingqiu Zheng , Chao Song , Xiaoping Guo , Meijun Yang , Guoqiang Luo , Song Zhang , Takashi Goto
{"title":"雾状 CVD 制造的钆稳定氧化锆纳米粒子对 SPS 烧结陶瓷机械性能的影响","authors":"Rong Tu , Xiangyu Chen , Yingqiu Zheng , Chao Song , Xiaoping Guo , Meijun Yang , Guoqiang Luo , Song Zhang , Takashi Goto","doi":"10.1016/j.mtla.2024.102216","DOIUrl":null,"url":null,"abstract":"<div><p>Zirconia is an engineering ceramic material with excellent comprehensive properties. However, it suffers from the inherent disadvantage of low fracture toughness. To improve its fracture toughness, Gd<sub>2</sub>O<sub>3</sub> is an effective stabilizer. In the present study, Gd<sub>2</sub>O<sub>3</sub>–ZrO<sub>2</sub> composite powders were synthesized using the Mist CVD method. Following synthesis, these powders were pressed through spark plasma sintering. The crystallinity of the Gd<sub>2</sub>O<sub>3</sub>–ZrO<sub>2</sub> powders improved as the deposition temperature increased from 600°C to 900°C. The tetragonality (c/<span><math><msqrt><mn>2</mn></msqrt></math></span>a) of the Gd–TZP composites increased from 0.99941 to 1.01571 as the Gd<sub>2</sub>O<sub>3</sub> content increased from 2 mol% to 4 mol%, but it decreased when the content reached 5 mol%. The Gd<sub>2</sub>O<sub>3</sub>–ZrO<sub>2</sub> nanoparticles produced via the Mist CVD approach presented a unique hollow spherical structure. Under moist chemical vapor deposition (CVD) conditions with 4 mol% Gd<sub>2</sub>O<sub>3</sub> at 1400°C, the Gd–TZP composites exhibited fracture toughness and hardness values of approximately 12.03 ± 0.15 MPa·m<sup>1/2</sup> and 12.16 ± 0.17 GPa, respectively.</p></div>","PeriodicalId":47623,"journal":{"name":"Materialia","volume":"37 ","pages":"Article 102216"},"PeriodicalIF":3.0000,"publicationDate":"2024-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effect of gadolinia–stabilized zirconia nanoparticles manufactured from Mist CVD on the mechanical properties of ceramics sintered by SPS\",\"authors\":\"Rong Tu , Xiangyu Chen , Yingqiu Zheng , Chao Song , Xiaoping Guo , Meijun Yang , Guoqiang Luo , Song Zhang , Takashi Goto\",\"doi\":\"10.1016/j.mtla.2024.102216\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Zirconia is an engineering ceramic material with excellent comprehensive properties. However, it suffers from the inherent disadvantage of low fracture toughness. To improve its fracture toughness, Gd<sub>2</sub>O<sub>3</sub> is an effective stabilizer. In the present study, Gd<sub>2</sub>O<sub>3</sub>–ZrO<sub>2</sub> composite powders were synthesized using the Mist CVD method. Following synthesis, these powders were pressed through spark plasma sintering. The crystallinity of the Gd<sub>2</sub>O<sub>3</sub>–ZrO<sub>2</sub> powders improved as the deposition temperature increased from 600°C to 900°C. The tetragonality (c/<span><math><msqrt><mn>2</mn></msqrt></math></span>a) of the Gd–TZP composites increased from 0.99941 to 1.01571 as the Gd<sub>2</sub>O<sub>3</sub> content increased from 2 mol% to 4 mol%, but it decreased when the content reached 5 mol%. The Gd<sub>2</sub>O<sub>3</sub>–ZrO<sub>2</sub> nanoparticles produced via the Mist CVD approach presented a unique hollow spherical structure. Under moist chemical vapor deposition (CVD) conditions with 4 mol% Gd<sub>2</sub>O<sub>3</sub> at 1400°C, the Gd–TZP composites exhibited fracture toughness and hardness values of approximately 12.03 ± 0.15 MPa·m<sup>1/2</sup> and 12.16 ± 0.17 GPa, respectively.</p></div>\",\"PeriodicalId\":47623,\"journal\":{\"name\":\"Materialia\",\"volume\":\"37 \",\"pages\":\"Article 102216\"},\"PeriodicalIF\":3.0000,\"publicationDate\":\"2024-08-24\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Materialia\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2589152924002138\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materialia","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2589152924002138","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Effect of gadolinia–stabilized zirconia nanoparticles manufactured from Mist CVD on the mechanical properties of ceramics sintered by SPS
Zirconia is an engineering ceramic material with excellent comprehensive properties. However, it suffers from the inherent disadvantage of low fracture toughness. To improve its fracture toughness, Gd2O3 is an effective stabilizer. In the present study, Gd2O3–ZrO2 composite powders were synthesized using the Mist CVD method. Following synthesis, these powders were pressed through spark plasma sintering. The crystallinity of the Gd2O3–ZrO2 powders improved as the deposition temperature increased from 600°C to 900°C. The tetragonality (c/a) of the Gd–TZP composites increased from 0.99941 to 1.01571 as the Gd2O3 content increased from 2 mol% to 4 mol%, but it decreased when the content reached 5 mol%. The Gd2O3–ZrO2 nanoparticles produced via the Mist CVD approach presented a unique hollow spherical structure. Under moist chemical vapor deposition (CVD) conditions with 4 mol% Gd2O3 at 1400°C, the Gd–TZP composites exhibited fracture toughness and hardness values of approximately 12.03 ± 0.15 MPa·m1/2 and 12.16 ± 0.17 GPa, respectively.
期刊介绍:
Materialia is a multidisciplinary journal of materials science and engineering that publishes original peer-reviewed research articles. Articles in Materialia advance the understanding of the relationship between processing, structure, property, and function of materials.
Materialia publishes full-length research articles, review articles, and letters (short communications). In addition to receiving direct submissions, Materialia also accepts transfers from Acta Materialia, Inc. partner journals. Materialia offers authors the choice to publish on an open access model (with author fee), or on a subscription model (with no author fee).