Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing ceramic connecting piece by combining nano transient eutectic liquid phase with surface oxidation and application of ceramic connecting piece
The invention belongs to the technical field of ceramic connection, and discloses a method for preparing a ceramic connecting piece by combining a nano transient eutectic liquid phase with surface oxidation and application of the ceramic connecting piece. The method comprises the following steps: weighing oxide powder, ball-milling, mixing and drying to obtain powder, preserving the heat of the powder at 1200-1500 DEG C for 1-6 hours, performing water quenching to obtain a sintering aid, grinding and sieving the sintering aid, and weighing the sintering aid and nano ceramic powder to obtain NITE phase powder; the NITE phase powder and the SiC ceramic subjected to surface oxidation are attached to form a prefabricated connecting piece of a ceramic-connecting powder-ceramic sandwich structure, and connection is carried out under the conditions that the temperature is 1200-1500 DEG C, the pressure is 0-10 MPa, and heat preservation is carried out for 10-60 min. The obtained ceramic connecting piece is high in shear strength, has good hydrothermal corrosion resistance, and can be widely applied to the field of packaging of heat exchange pipes, hot end parts of aero-engines, thermal protection structures of aerospace vehicles or cladding pipes of nuclear power stations.
本发明属于陶瓷连接技术领域，公开了一种纳米瞬态共晶液相结合表面氧化制备陶瓷连接件的方法与应用。该方法是将氧化物粉体称量后球磨混合干燥后得到的粉体在1200～1500℃保温1～6小时经水淬后制得烧结助剂，烧结助剂经研磨过筛后与纳米陶瓷粉体称量后得到NITE相粉体，将NITE相粉体与经表面氧化SiC陶瓷贴合形成陶瓷‑连接粉体‑陶瓷三明治结构的预制连接件，在1200～1500℃和0～10MPa保温10～60min的条件下进行连接。得到的陶瓷连接件剪切强度高，具有良好的抗水热腐蚀性能，可广泛应用于热交换管、航空发动机的热端部件、航空航天器的热防护结构或核电站的包壳管封装领域。
Method for preparing ceramic connecting piece by combining nano transient eutectic liquid phase with surface oxidation and application of ceramic connecting piece
The invention belongs to the technical field of ceramic connection, and discloses a method for preparing a ceramic connecting piece by combining a nano transient eutectic liquid phase with surface oxidation and application of the ceramic connecting piece. The method comprises the following steps: weighing oxide powder, ball-milling, mixing and drying to obtain powder, preserving the heat of the powder at 1200-1500 DEG C for 1-6 hours, performing water quenching to obtain a sintering aid, grinding and sieving the sintering aid, and weighing the sintering aid and nano ceramic powder to obtain NITE phase powder; the NITE phase powder and the SiC ceramic subjected to surface oxidation are attached to form a prefabricated connecting piece of a ceramic-connecting powder-ceramic sandwich structure, and connection is carried out under the conditions that the temperature is 1200-1500 DEG C, the pressure is 0-10 MPa, and heat preservation is carried out for 10-60 min. The obtained ceramic connecting piece is high in shear strength, has good hydrothermal corrosion resistance, and can be widely applied to the field of packaging of heat exchange pipes, hot end parts of aero-engines, thermal protection structures of aerospace vehicles or cladding pipes of nuclear power stations.
本发明属于陶瓷连接技术领域，公开了一种纳米瞬态共晶液相结合表面氧化制备陶瓷连接件的方法与应用。该方法是将氧化物粉体称量后球磨混合干燥后得到的粉体在1200～1500℃保温1～6小时经水淬后制得烧结助剂，烧结助剂经研磨过筛后与纳米陶瓷粉体称量后得到NITE相粉体，将NITE相粉体与经表面氧化SiC陶瓷贴合形成陶瓷‑连接粉体‑陶瓷三明治结构的预制连接件，在1200～1500℃和0～10MPa保温10～60min的条件下进行连接。得到的陶瓷连接件剪切强度高，具有良好的抗水热腐蚀性能，可广泛应用于热交换管、航空发动机的热端部件、航空航天器的热防护结构或核电站的包壳管封装领域。
Method for preparing ceramic connecting piece by combining nano transient eutectic liquid phase with surface oxidation and application of ceramic connecting piece
一种纳米瞬态共晶液相结合表面氧化制备陶瓷连接件的方法与应用
GUO WEIMING (Autor:in) / HE SHENGJIN (Autor:in) / ZHAN CHUANGTIAN (Autor:in) / SU LINGFENG (Autor:in) / CHEN XIUBING (Autor:in) / ZHU LINLIN (Autor:in) / LIN HUATAI (Autor:in)
03.03.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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