A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Preparation method of rare earth doped anti-ablation C/C-ZrC-SiC composite material
The invention provides a method for preparing a rare earth doped anti-ablation C/C-ZrC-SiC composite material by combining a novel fused salt with a reactive infiltration method, which comprises the following steps of: doping rare earth components such as yttrium, lanthanum and the like into the C/C-ZrC-SiC composite material by combining the novel fused salt with the reactive infiltration method; the prepared modified composite material is of a multiphase ceramic structure composed of ZrC, SiC, YF3, LaF3 and other high-melting-point rare earth fluorides. The YF3-doped modified C/C-ZrC-SiC composite material prepared by the method provided by the invention can form a solid solution in which Y2O3 is dissolved in ZrO2 in an ablation process, and the ablation product can maintain a tetragonal crystal form in a rapid temperature change process, so that an oxidation film is prevented from being broken and failed due to homogeneous multiphase transformation, the stability of the oxidation film is enhanced, and the service life of the oxidation film is prolonged. The oxidation and ablation resistance of the composite material is improved, and wide-temperature-range, long-time-efficiency and reliable oxidation resistance and ablation resistance protection are achieved.
本发明提供了一种新型熔盐结合反应熔渗法制备稀土掺杂抗烧蚀C/C‑ZrC‑SiC复合材料的方法，对C/C‑ZrC‑SiC复合材料通过新型熔盐结合反应熔渗法向材料内掺杂钇、镧等稀土成分，制备得到的改性复合材料由为ZrC、SiC以及YF3、LaF3等高熔点稀土氟化物组成的复相陶瓷结构。采用本发明提供的方法制备的YF3掺杂改性C/C‑ZrC‑SiC复合材料能够在烧蚀过程中形成Y2O3固溶于ZrO2的固溶体，此烧蚀产物能够在温度急剧变化过程中维持四方晶型，避免同质多相转变导致的氧化膜破碎失效，增强氧化膜的稳定性，提高了复合材料的抗氧化烧蚀性能，实现宽温域、长时效可靠抗氧化和抗烧蚀防护。
Preparation method of rare earth doped anti-ablation C/C-ZrC-SiC composite material
The invention provides a method for preparing a rare earth doped anti-ablation C/C-ZrC-SiC composite material by combining a novel fused salt with a reactive infiltration method, which comprises the following steps of: doping rare earth components such as yttrium, lanthanum and the like into the C/C-ZrC-SiC composite material by combining the novel fused salt with the reactive infiltration method; the prepared modified composite material is of a multiphase ceramic structure composed of ZrC, SiC, YF3, LaF3 and other high-melting-point rare earth fluorides. The YF3-doped modified C/C-ZrC-SiC composite material prepared by the method provided by the invention can form a solid solution in which Y2O3 is dissolved in ZrO2 in an ablation process, and the ablation product can maintain a tetragonal crystal form in a rapid temperature change process, so that an oxidation film is prevented from being broken and failed due to homogeneous multiphase transformation, the stability of the oxidation film is enhanced, and the service life of the oxidation film is prolonged. The oxidation and ablation resistance of the composite material is improved, and wide-temperature-range, long-time-efficiency and reliable oxidation resistance and ablation resistance protection are achieved.
本发明提供了一种新型熔盐结合反应熔渗法制备稀土掺杂抗烧蚀C/C‑ZrC‑SiC复合材料的方法，对C/C‑ZrC‑SiC复合材料通过新型熔盐结合反应熔渗法向材料内掺杂钇、镧等稀土成分，制备得到的改性复合材料由为ZrC、SiC以及YF3、LaF3等高熔点稀土氟化物组成的复相陶瓷结构。采用本发明提供的方法制备的YF3掺杂改性C/C‑ZrC‑SiC复合材料能够在烧蚀过程中形成Y2O3固溶于ZrO2的固溶体，此烧蚀产物能够在温度急剧变化过程中维持四方晶型，避免同质多相转变导致的氧化膜破碎失效，增强氧化膜的稳定性，提高了复合材料的抗氧化烧蚀性能，实现宽温域、长时效可靠抗氧化和抗烧蚀防护。
Preparation method of rare earth doped anti-ablation C/C-ZrC-SiC composite material
一种稀土掺杂抗烧蚀C/C-ZrC-SiC复合材料的制备方法
SUN WEI (author) / SHEN YUZHU (author) / XU YONGLONG (author) / XIONG XIANG (author) / ZHANG HONGBO (author)
2022-04-15
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Preparation method of rare earth doped IZO target material
| European Patent Office | 2023
| European Patent Office | 2021
Radiation-proof concrete doped with rare earth composite material
| European Patent Office | 2021
Rare earth doped cordierite ceramic material and preparation method thereof
| European Patent Office | 2023
Anti-ablation carbon/carbon composite material and preparation method thereof
| European Patent Office | 2024