Pan Zhang, Xiong-Jun Liu, Guang-Yu He, Fu-Kuo Chiang, Hui Wang, Yuan Wu, Sui-He Jiang, Xiao-Bin Zhang, Zhao-Ping Lu
{"title":"耐烧蚀性更强的新型高熵超高温陶瓷","authors":"Pan Zhang, Xiong-Jun Liu, Guang-Yu He, Fu-Kuo Chiang, Hui Wang, Yuan Wu, Sui-He Jiang, Xiao-Bin Zhang, Zhao-Ping Lu","doi":"10.1007/s12598-024-02904-5","DOIUrl":null,"url":null,"abstract":"<div><p>Ultra-high temperature ceramics (UHTCs) offer great potential for applications in extreme service environments, such as hypersonic vehicles, rockets and re-entry spacecraft. However, the severe ablation caused by high-speed heat flow scouring and high-temperature oxidation limits the engineering application of UHTCs. In this work, we report a novel high-entropy UHTC (Ti<sub>0.2</sub>Zr<sub>0.2</sub>V<sub>0.2</sub>Nb<sub>0.2</sub>Cr<sub>0.2</sub>)(C<sub>0.5</sub>N<sub>0.5</sub>), which exhibits superior ablation resistance and light weight compared with traditional UHTCs. Specifically, at a temperature of 2650 K, the mass ablation rate of the material was measured as 1.025 × 10<sup>−2</sup> g·s<sup>−1</sup>, and the density was calculated to be 6.7 g·cm<sup>−3</sup>. The impressive ablation resistance of (Ti<sub>0.2</sub>Zr<sub>0.2</sub>V<sub>0.2</sub>Nb<sub>0.2</sub>Cr<sub>0.2</sub>)(C<sub>0.5</sub>N<sub>0.5</sub>) is attributed to the incorporation of a self-healing mechanism, which is associated with the in-situ formation of a medium-entropy oxide (TiVCr)O<sub>2</sub> during the ablation process. The medium-entropy oxide can seal pores and cracks to retard oxygen diffusion and prevent the material from fragmentation, thereby resulting in outstanding ablation resistance.</p><h3>Graphical abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"43 12","pages":"6559 - 6570"},"PeriodicalIF":9.6000,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Novel high-entropy ultra-high temperature ceramics with enhanced ablation resistance\",\"authors\":\"Pan Zhang, Xiong-Jun Liu, Guang-Yu He, Fu-Kuo Chiang, Hui Wang, Yuan Wu, Sui-He Jiang, Xiao-Bin Zhang, Zhao-Ping Lu\",\"doi\":\"10.1007/s12598-024-02904-5\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Ultra-high temperature ceramics (UHTCs) offer great potential for applications in extreme service environments, such as hypersonic vehicles, rockets and re-entry spacecraft. However, the severe ablation caused by high-speed heat flow scouring and high-temperature oxidation limits the engineering application of UHTCs. In this work, we report a novel high-entropy UHTC (Ti<sub>0.2</sub>Zr<sub>0.2</sub>V<sub>0.2</sub>Nb<sub>0.2</sub>Cr<sub>0.2</sub>)(C<sub>0.5</sub>N<sub>0.5</sub>), which exhibits superior ablation resistance and light weight compared with traditional UHTCs. Specifically, at a temperature of 2650 K, the mass ablation rate of the material was measured as 1.025 × 10<sup>−2</sup> g·s<sup>−1</sup>, and the density was calculated to be 6.7 g·cm<sup>−3</sup>. The impressive ablation resistance of (Ti<sub>0.2</sub>Zr<sub>0.2</sub>V<sub>0.2</sub>Nb<sub>0.2</sub>Cr<sub>0.2</sub>)(C<sub>0.5</sub>N<sub>0.5</sub>) is attributed to the incorporation of a self-healing mechanism, which is associated with the in-situ formation of a medium-entropy oxide (TiVCr)O<sub>2</sub> during the ablation process. The medium-entropy oxide can seal pores and cracks to retard oxygen diffusion and prevent the material from fragmentation, thereby resulting in outstanding ablation resistance.</p><h3>Graphical abstract</h3>\\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":749,\"journal\":{\"name\":\"Rare Metals\",\"volume\":\"43 12\",\"pages\":\"6559 - 6570\"},\"PeriodicalIF\":9.6000,\"publicationDate\":\"2024-07-22\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Rare Metals\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s12598-024-02904-5\",\"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://link.springer.com/article/10.1007/s12598-024-02904-5","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}
Novel high-entropy ultra-high temperature ceramics with enhanced ablation resistance
Ultra-high temperature ceramics (UHTCs) offer great potential for applications in extreme service environments, such as hypersonic vehicles, rockets and re-entry spacecraft. However, the severe ablation caused by high-speed heat flow scouring and high-temperature oxidation limits the engineering application of UHTCs. In this work, we report a novel high-entropy UHTC (Ti0.2Zr0.2V0.2Nb0.2Cr0.2)(C0.5N0.5), which exhibits superior ablation resistance and light weight compared with traditional UHTCs. Specifically, at a temperature of 2650 K, the mass ablation rate of the material was measured as 1.025 × 10−2 g·s−1, and the density was calculated to be 6.7 g·cm−3. The impressive ablation resistance of (Ti0.2Zr0.2V0.2Nb0.2Cr0.2)(C0.5N0.5) is attributed to the incorporation of a self-healing mechanism, which is associated with the in-situ formation of a medium-entropy oxide (TiVCr)O2 during the ablation process. The medium-entropy oxide can seal pores and cracks to retard oxygen diffusion and prevent the material from fragmentation, thereby resulting in outstanding ablation resistance.
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.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
