Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing carbonitride-silicide solid solution composite ceramic at low temperature by reaction hot pressing sintering technology
The invention relates to a method for preparing carbonitride-silicide solid solution composite ceramic at a low temperature by a reaction hot pressing sintering technology, and belongs to the field of multiphase ceramic materials. The invention aims to solve the technical problems of poor sinterability and high-temperature performance of the existing multiphase ceramic. The method comprises the following steps: 1, mixing carbide powder, carbonitride powder and silicon powder, and carrying out ball milling to obtain composite powder; and 2, sintering the composite powder obtained in the step 1 to obtain the carbonitride-silicide solid solution composite ceramic. Fourth subgroup carbides and carbonitride capable of generating solid-phase exchange are selected, the solid-phase reaction and the solid-solution coupling synergistic process of original powder in the sintering process are fully utilized, an anion-cation dual solid solution or split-phase solid solution can be formed, and compared with a traditional means, the sintering temperature can be reduced by 300-500 DEG C. And the relatively low sintering temperature ensures that the material prepared by the method has a fine average grain size, and the strength and the hardness of the material are remarkably improved.
一种反应热压烧结法低温制备碳氮化物‑硅化物固溶体复相陶瓷的方法。本发明属于复相陶瓷材料领域。本发明的目的是为了解决现有复相陶瓷的烧结性和高温性能差的技术问题。方法：步骤1：将碳化物粉体、碳氮化物粉体和硅粉体混合，球磨，得到复合粉体；步骤2：将步骤1得到的复合粉体进行烧结，得到碳氮化物‑硅化物固溶体复相陶瓷。本发明选择能够发生固相交换的第四副族碳化物和碳氮化物，充分利用原始粉末在烧结过程中固相反应及其固溶耦合协同过程，可形成阴阳离子双重固溶体或分相固溶体，与传统手段相比本发明能够降低烧结温度300℃～500℃。且较低的烧结温度保证了经此方法制备的材料具有细小平均晶粒尺寸，并使得其强度和硬度均得到显著提升。
Method for preparing carbonitride-silicide solid solution composite ceramic at low temperature by reaction hot pressing sintering technology
The invention relates to a method for preparing carbonitride-silicide solid solution composite ceramic at a low temperature by a reaction hot pressing sintering technology, and belongs to the field of multiphase ceramic materials. The invention aims to solve the technical problems of poor sinterability and high-temperature performance of the existing multiphase ceramic. The method comprises the following steps: 1, mixing carbide powder, carbonitride powder and silicon powder, and carrying out ball milling to obtain composite powder; and 2, sintering the composite powder obtained in the step 1 to obtain the carbonitride-silicide solid solution composite ceramic. Fourth subgroup carbides and carbonitride capable of generating solid-phase exchange are selected, the solid-phase reaction and the solid-solution coupling synergistic process of original powder in the sintering process are fully utilized, an anion-cation dual solid solution or split-phase solid solution can be formed, and compared with a traditional means, the sintering temperature can be reduced by 300-500 DEG C. And the relatively low sintering temperature ensures that the material prepared by the method has a fine average grain size, and the strength and the hardness of the material are remarkably improved.
一种反应热压烧结法低温制备碳氮化物‑硅化物固溶体复相陶瓷的方法。本发明属于复相陶瓷材料领域。本发明的目的是为了解决现有复相陶瓷的烧结性和高温性能差的技术问题。方法：步骤1：将碳化物粉体、碳氮化物粉体和硅粉体混合，球磨，得到复合粉体；步骤2：将步骤1得到的复合粉体进行烧结，得到碳氮化物‑硅化物固溶体复相陶瓷。本发明选择能够发生固相交换的第四副族碳化物和碳氮化物，充分利用原始粉末在烧结过程中固相反应及其固溶耦合协同过程，可形成阴阳离子双重固溶体或分相固溶体，与传统手段相比本发明能够降低烧结温度300℃～500℃。且较低的烧结温度保证了经此方法制备的材料具有细小平均晶粒尺寸，并使得其强度和硬度均得到显著提升。
Method for preparing carbonitride-silicide solid solution composite ceramic at low temperature by reaction hot pressing sintering technology
一种反应热压烧结法低温制备碳氮化物-硅化物固溶体复相陶瓷的方法
WEI BOXIN (Autor:in) / ZHANG MENGMENG (Autor:in) / LI XUEWEN (Autor:in) / FANG WENBIN (Autor:in)
01.02.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
| Europäisches Patentamt | 2022
| Europäisches Patentamt | 2023
ZrN-based composite ceramic and hot pressing reaction sintering preparation method thereof
| Europäisches Patentamt | 2021
| Europäisches Patentamt | 2021
| Europäisches Patentamt | 2024