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• • 英国萨里大学与空客公司推出新型空间应用涂层

引用 abcdef 2021-4-22 12:52

针对传统包埋法制备的C/C复合材料硅基陶瓷涂层基体损伤严重，涂层厚度不均，晶粒粗大，陶瓷相含量和分布均匀性、致密度不理想，高低温交变易开裂等问题，为了克服陶瓷涂层与C/C复合材料在热交变环境中热膨胀失配开裂以及玻璃层在高温长时间服役过程中稳定性差的问题，本课题利用酚醛树脂作为粘结剂及碳源先配备陶瓷料浆，接着涂覆C/C基体，然后通过所设计的坩埚构造微正压气相渗硅环境，最终制备出SiC-HfB2-Si抗氧化涂层C/C复合材料。 相关工作（西北工业大学李贺军院士课题组付前刚教授、程春玉博士（共同通讯作者）在Surface & Coatings Technology （表面及涂层技术 ( IF 3.192 ) 在线日期：2020-01-11 、DOI：10.1016/j.surfcoat.2020.125335 文章主页）385 (2020) 125335上以题为“Oxidation behavior of SiC-HfB2-Si coating on C/C composites prepared by slurry dipping combined with gaseous Si infiltration”的文章发表。研究人员采用料浆浸渍和气相渗硅(SD+GSI)相结合的方法，设计并制备了一种有效的SiC-HfB2-Si单层涂层，用于C/C复合材料的长时间氧化防护。所制备的涂层致密，与C/C基体结合良好，这与形成的锯齿状SiC过渡层有关。在静态空气中1773 K氧化>538 h后，SiC-HfB2-Si涂层样品的质量损失仅为0.69%。热力学计算表明，SiC-HfB 2-Si涂层样品的氧化过程主要受氧扩散控制，稳定的氧化产物为HfO 2+B2O3+SiO 2+CO。优异的抗氧化能力主要归功于涂层表面形成了一层复合的Hf-Si-O玻璃层来修复裂纹和孔隙。本文第一作者为博士生张佩。

引用 abcdef 2021-5-3 14:35

1 .  Oxidation behavior of SiC-HfB2-Si coating on C/C composites prepared by slurry dipping combined with gaseous Si infiltration
Surf. Coat. Technol.  ( IF 3.784 ) 2020-01-11 ; DOI:10.1016/j.surfcoat.2020.125335 ; https://www.x-mol.com/paper/1216894956885266432   
Pei Zhang, Qian-gang Fu, Dou Hu, Chun-yu Cheng, Xiao-fei Zhu;
2 .  Microstructure and oxidation behavior of plasma sprayed WSi2-mullite-MoSi2 coating on niobium alloy at 1500 °C
Surf. Coat. Technol.  ( IF 3.784 ) 2020-07-18 ; DOI:10.1016/j.surfcoat.2020.126210 ; https://www.x-mol.com/paper/1284630124900827136   
Guangpeng Zhang, Jia Sun, Qiangang Fu;
3 .  Comparing oxidation behaviors at 1773 K and 1973 K of HfB2-MoSi2/SiC-Si coating prepared by a combination method of pack cementation, slurry painting and in-situ synthesis
Surf. Coat. Technol.  ( IF 3.784 ) 2020-09-13 ; DOI:10.1016/j.surfcoat.2020.126418 ; https://www.x-mol.com/paper/1305229769791737856   
Pei Zhang, Qiangang Fu, Chunyu Cheng, Xiaofei Zhu, Jinguo Huang, Jiaping Zhang, Wei Li;

引用 abcdef 2021-5-3 14:35

1 .  Oxidation behavior of SiC-HfB2-Si coating on C/C composites prepared by slurry dipping combined with gaseous Si infiltration
Surf. Coat. Technol. ( IF 3.784 ) 2020-01-11 ; DOI:10.1016/j.surfcoat.2020.125335 ; https://www.x-mol.com/paper/1216894956885266432   
Pei Zhang, Qian-gang Fu, Dou Hu, Chun-yu Cheng, Xiao-fei Zhu;
2 .  Microstructure and oxidation behavior of plasma sprayed WSi2-mullite-MoSi2 coating on niobium alloy at 1500 °C
Surf. Coat. Technol. ( IF 3.784 ) 2020-07-18 ; DOI:10.1016/j.surfcoat.2020.126210 ; https://www.x-mol.com/paper/1284630124900827136   
Guangpeng Zhang, Jia Sun, Qiangang Fu;
3 .  Comparing oxidation behaviors at 1773 K and 1973 K of HfB2-MoSi2/SiC-Si coating prepared by a combination method of pack cementation, slurry painting and in-situ synthesis
Surf. Coat. Technol. ( IF 3.784 ) 2020-09-13 ; DOI:10.1016/j.surfcoat.2020.126418 ; https://www.x-mol.com/paper/1305229769791737856   
Pei Zhang, Qiangang Fu, Chunyu Cheng, Xiaofei Zhu, Jinguo Huang, Jiaping Zhang, Wei Li;

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