Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention discloses a method for improving melt siliconizing uniformity of an MI-SiC-SiC preform, and aims to solve the technical problem that a preform cannot be uniformly filled with melt silicon for a large-size and complex-shape component. According to the technical scheme, the method comprises the following steps: preparing a SiC fiber prepreg tape or prepreg cloth, laminating to form a prefabricated body, curing to form a cured prefabricated body, punching the cured prefabricated body, inserting a wick array, carrying out heat treatment to form a carbonized prefabricated body, and carrying out melt siliconizing to form the MI-SiC-SiC composite material. According to the wick array, liquid silicon rapidly permeates into the prefabricated body, the siliconizing speed and the siliconizing uniformity are remarkably improved, and the problem that fusion siliconizing of large-size and complex-shape components is incomplete is effectively solved.
本发明公开了一种提高MI‑SiC‑SiC预制体熔融渗硅均匀性的方法，目的是解决针对大尺寸形状复杂的构件熔融硅无法均匀填充预制体的技术问题，技术方案为：它包括制备SiC纤维预浸带或者预浸布、层叠形成预制体、固化形成固化预制体、在固化后的预制体上打孔并插入灯芯阵列，热处理形成碳化预制体、熔融渗硅形成MI‑SiC‑SiC复合材料。本发明灯芯阵列使液硅迅速渗入预制体，显著提升渗硅速度和渗硅均匀性，有效解决大尺寸以及形状复杂构件熔融渗硅不完全的难题。
The invention discloses a method for improving melt siliconizing uniformity of an MI-SiC-SiC preform, and aims to solve the technical problem that a preform cannot be uniformly filled with melt silicon for a large-size and complex-shape component. According to the technical scheme, the method comprises the following steps: preparing a SiC fiber prepreg tape or prepreg cloth, laminating to form a prefabricated body, curing to form a cured prefabricated body, punching the cured prefabricated body, inserting a wick array, carrying out heat treatment to form a carbonized prefabricated body, and carrying out melt siliconizing to form the MI-SiC-SiC composite material. According to the wick array, liquid silicon rapidly permeates into the prefabricated body, the siliconizing speed and the siliconizing uniformity are remarkably improved, and the problem that fusion siliconizing of large-size and complex-shape components is incomplete is effectively solved.
本发明公开了一种提高MI‑SiC‑SiC预制体熔融渗硅均匀性的方法，目的是解决针对大尺寸形状复杂的构件熔融硅无法均匀填充预制体的技术问题，技术方案为：它包括制备SiC纤维预浸带或者预浸布、层叠形成预制体、固化形成固化预制体、在固化后的预制体上打孔并插入灯芯阵列，热处理形成碳化预制体、熔融渗硅形成MI‑SiC‑SiC复合材料。本发明灯芯阵列使液硅迅速渗入预制体，显著提升渗硅速度和渗硅均匀性，有效解决大尺寸以及形状复杂构件熔融渗硅不完全的难题。
| Europäisches Patentamt | 2023
Reducing cylindrical ceramic matrix composite melt siliconizing tool and method
| Europäisches Patentamt | 2024