Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of SiC-HfB2 double-layer composite material
The invention provides a preparation method of a SiC-HfB2 double-layer composite material. The prepapration method comprises the following steps: respectively carrying out ultrasonic cleaning on SiC powder, HfO2 powder and B4C powder with absolute ethyl alcohol, drying, mixing the SiC powder, HfO2 powder and B4C powder with a first sintering aid, carrying out pre-pressing molding to obtain a SiC pre-pressed layer, mixing the HfO2 powder and B4C powder with a second sintering aid, forming slurry with deionized water, coating the surface of the SiC pre-pressed layer with the slurry, pre-pressing to form an SiC-HfO2-B4C pre-pressing assembly, sintering the SiC-HfO2-B4C pre-pressing assembly to obtain a SiC-HfB2 double-layer composite material preparation body, and carrying out surface treatment on the SiC-HfB2 double-layer composite material preparation body to obtain the SiC-HfB2 double-layer composite material. The SiC-HfB2 double-layer composite material prepared by the preparation method disclosed by the invention is beneficial to avoiding the problems of non-uniform distribution of HfB2 particles and relatively low relative content caused by poor sintering property of the HfB2 due to direct addition of the HfB2, so that the SiC-HfB2 double-layer composite material has the characteristics of high bonding strength, high hardness and the like.
本发明提供了一种SiC‑HfB2双层复合材料的制备方法，其包括将SiC粉末、HfO2粉末、B4C粉末分别用无水乙醇进行超声清洗并烘干后，SiC粉末、HfO2粉末和B4C粉末与第一烧结助剂混合并预压成型得到SiC预压层，HfO2粉末和B4C粉末与第二烧结助剂混合与去离子水形成浆料，覆在SiC预压层表面，预压形成SiC‑HfO2‑B4C预压组合体，对SiC‑HfO2‑B4C预压组合体进行烧结后得到SiC‑HfB2双层复合材料预备体，SiC‑HfB2双层复合材料预备体表面处理后得到SiC‑HfB2双层复合材料。本发明所述的制备方法制备的SiC‑HfB2双层复合材料，有利于规避直接添加HfB2因其本身烧结性差引起的HfB2颗粒分布不均匀，且相对含量较低的问题，由此使得SiC‑HfB2双层复合材料具有结合强度高、硬度高等特性。
Preparation method of SiC-HfB2 double-layer composite material
The invention provides a preparation method of a SiC-HfB2 double-layer composite material. The prepapration method comprises the following steps: respectively carrying out ultrasonic cleaning on SiC powder, HfO2 powder and B4C powder with absolute ethyl alcohol, drying, mixing the SiC powder, HfO2 powder and B4C powder with a first sintering aid, carrying out pre-pressing molding to obtain a SiC pre-pressed layer, mixing the HfO2 powder and B4C powder with a second sintering aid, forming slurry with deionized water, coating the surface of the SiC pre-pressed layer with the slurry, pre-pressing to form an SiC-HfO2-B4C pre-pressing assembly, sintering the SiC-HfO2-B4C pre-pressing assembly to obtain a SiC-HfB2 double-layer composite material preparation body, and carrying out surface treatment on the SiC-HfB2 double-layer composite material preparation body to obtain the SiC-HfB2 double-layer composite material. The SiC-HfB2 double-layer composite material prepared by the preparation method disclosed by the invention is beneficial to avoiding the problems of non-uniform distribution of HfB2 particles and relatively low relative content caused by poor sintering property of the HfB2 due to direct addition of the HfB2, so that the SiC-HfB2 double-layer composite material has the characteristics of high bonding strength, high hardness and the like.
本发明提供了一种SiC‑HfB2双层复合材料的制备方法，其包括将SiC粉末、HfO2粉末、B4C粉末分别用无水乙醇进行超声清洗并烘干后，SiC粉末、HfO2粉末和B4C粉末与第一烧结助剂混合并预压成型得到SiC预压层，HfO2粉末和B4C粉末与第二烧结助剂混合与去离子水形成浆料，覆在SiC预压层表面，预压形成SiC‑HfO2‑B4C预压组合体，对SiC‑HfO2‑B4C预压组合体进行烧结后得到SiC‑HfB2双层复合材料预备体，SiC‑HfB2双层复合材料预备体表面处理后得到SiC‑HfB2双层复合材料。本发明所述的制备方法制备的SiC‑HfB2双层复合材料，有利于规避直接添加HfB2因其本身烧结性差引起的HfB2颗粒分布不均匀，且相对含量较低的问题，由此使得SiC‑HfB2双层复合材料具有结合强度高、硬度高等特性。
Preparation method of SiC-HfB2 double-layer composite material
SiC-HfB2双层复合材料的制备方法
ZHAO YUHUI (Autor:in) / LI JIANCHAO (Autor:in) / AN JIANLIANG (Autor:in) / ZHANG QIAN (Autor:in) / TIAN SHANSHAN (Autor:in) / GUO YANFEI (Autor:in) / SHEN LIYUE (Autor:in)
03.12.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
Preparation method of antioxidant SiCf/SiC-HfB2 composite material
| Europäisches Patentamt | 2023
C/HfB2-HfC-Cu composite material and preparation method thereof
| Europäisches Patentamt | 2023
| Europäisches Patentamt | 2021
B4C-HfB2-SiC ternary high-temperature eutectic composite ceramic material and preparation method
| Europäisches Patentamt | 2015
Method for preparation of dense HfC(Si)—HfB2 composite ceramic
| Europäisches Patentamt | 2021