Xue-Qin Zhang, Ru-Yue Su, Xiong Gao, Jing-Yi Chen, Guo Liu, Ru-Jie He, Ying Li
{"title":"通过与聚脲复合避免 3D 打印 Al2O3 蜂窝陶瓷结构的脆性","authors":"Xue-Qin Zhang, Ru-Yue Su, Xiong Gao, Jing-Yi Chen, Guo Liu, Ru-Jie He, Ying Li","doi":"10.1007/s12598-024-02850-2","DOIUrl":null,"url":null,"abstract":"<p>Benefiting from excellent mechanical properties and low density, cellular ceramic structures (CCSs) are competitive candidates as structural components. However, inherent brittleness from strong chemical bonds among atoms extremely impeded CCSs’ application. Natural materials occupied outstanding strength and toughness simultaneously due to the dual-phase interpenetrated structure. Inspired by natural materials, it was proposed to fabricate coating covered and fulfilled polyurea/CCS interpenetrated composites (C/CCSs and B/CCSs) to circumvent the brittleness of 3D-printed Al<sub>2</sub>O<sub>3</sub> CCSs. It was demonstrated that polyurea coating had less effect on the compressive strength of C/CCSs but tremendously improved their energy-absorbing ability. The energy-absorbing ability of C/CCSs was improved from 26.48–52.57 kJ·m<sup>−3</sup> of CCSs to 1.04–1.89 MJ·m<sup>−3</sup> because of the extended plateau stage. Furthermore, compressive strength and energy-absorbing ability of B/CCSs were strengthened to 1.33–1.36 and 2.84–4.61 times of C/CCSs, respectively. Besides, failure mode of C/CCSs changed from localized deformation to fracturing entirely with the increase in relative density of CCSs inside, which was the same as that of CCSs. However, with the help of polyurea coating, C/CCSs were still intact at strains up to 60%, which would never fail catastrophically as CCSs at low strains. B/CCSs tended to fracture as a whole, which was not influenced by relative density of pristine CCSs. It was believed that this work provided a creative way to circumvent the brittleness of CCSs and improve their mechanical performances.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\n","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":null,"pages":null},"PeriodicalIF":9.6000,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Circumventing brittleness of 3D-printed Al2O3 cellular ceramic structures via compositing with polyurea\",\"authors\":\"Xue-Qin Zhang, Ru-Yue Su, Xiong Gao, Jing-Yi Chen, Guo Liu, Ru-Jie He, Ying Li\",\"doi\":\"10.1007/s12598-024-02850-2\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Benefiting from excellent mechanical properties and low density, cellular ceramic structures (CCSs) are competitive candidates as structural components. However, inherent brittleness from strong chemical bonds among atoms extremely impeded CCSs’ application. Natural materials occupied outstanding strength and toughness simultaneously due to the dual-phase interpenetrated structure. Inspired by natural materials, it was proposed to fabricate coating covered and fulfilled polyurea/CCS interpenetrated composites (C/CCSs and B/CCSs) to circumvent the brittleness of 3D-printed Al<sub>2</sub>O<sub>3</sub> CCSs. It was demonstrated that polyurea coating had less effect on the compressive strength of C/CCSs but tremendously improved their energy-absorbing ability. The energy-absorbing ability of C/CCSs was improved from 26.48–52.57 kJ·m<sup>−3</sup> of CCSs to 1.04–1.89 MJ·m<sup>−3</sup> because of the extended plateau stage. Furthermore, compressive strength and energy-absorbing ability of B/CCSs were strengthened to 1.33–1.36 and 2.84–4.61 times of C/CCSs, respectively. Besides, failure mode of C/CCSs changed from localized deformation to fracturing entirely with the increase in relative density of CCSs inside, which was the same as that of CCSs. However, with the help of polyurea coating, C/CCSs were still intact at strains up to 60%, which would never fail catastrophically as CCSs at low strains. B/CCSs tended to fracture as a whole, which was not influenced by relative density of pristine CCSs. It was believed that this work provided a creative way to circumvent the brittleness of CCSs and improve their mechanical performances.</p><h3 data-test=\\\"abstract-sub-heading\\\">Graphical abstract</h3>\\n\",\"PeriodicalId\":749,\"journal\":{\"name\":\"Rare Metals\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":9.6000,\"publicationDate\":\"2024-06-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Rare Metals\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1007/s12598-024-02850-2\",\"RegionNum\":1,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Rare Metals","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1007/s12598-024-02850-2","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Circumventing brittleness of 3D-printed Al2O3 cellular ceramic structures via compositing with polyurea
Benefiting from excellent mechanical properties and low density, cellular ceramic structures (CCSs) are competitive candidates as structural components. However, inherent brittleness from strong chemical bonds among atoms extremely impeded CCSs’ application. Natural materials occupied outstanding strength and toughness simultaneously due to the dual-phase interpenetrated structure. Inspired by natural materials, it was proposed to fabricate coating covered and fulfilled polyurea/CCS interpenetrated composites (C/CCSs and B/CCSs) to circumvent the brittleness of 3D-printed Al2O3 CCSs. It was demonstrated that polyurea coating had less effect on the compressive strength of C/CCSs but tremendously improved their energy-absorbing ability. The energy-absorbing ability of C/CCSs was improved from 26.48–52.57 kJ·m−3 of CCSs to 1.04–1.89 MJ·m−3 because of the extended plateau stage. Furthermore, compressive strength and energy-absorbing ability of B/CCSs were strengthened to 1.33–1.36 and 2.84–4.61 times of C/CCSs, respectively. Besides, failure mode of C/CCSs changed from localized deformation to fracturing entirely with the increase in relative density of CCSs inside, which was the same as that of CCSs. However, with the help of polyurea coating, C/CCSs were still intact at strains up to 60%, which would never fail catastrophically as CCSs at low strains. B/CCSs tended to fracture as a whole, which was not influenced by relative density of pristine CCSs. It was believed that this work provided a creative way to circumvent the brittleness of CCSs and improve their mechanical performances.
期刊介绍:
Rare Metals is a monthly peer-reviewed journal published by the Nonferrous Metals Society of China. It serves as a platform for engineers and scientists to communicate and disseminate original research articles in the field of rare metals. The journal focuses on a wide range of topics including metallurgy, processing, and determination of rare metals. Additionally, it showcases the application of rare metals in advanced materials such as superconductors, semiconductors, composites, and ceramics.