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B4C-based double-layer ceramic composite material and preparation method thereof
The invention relates to a B4C-based double-layer ceramic composite material and a preparation method thereof, and belongs to the technical field of materials. The preparation method of the compositematerial comprises the steps of material preparing, mixing, drying, hot pressing sintering or pressureless sintering and the like, wherein material preparing is characterized by respectively weighingmaterials of a boron carbide ceramic layer and a toughening layer of the double-layer composite material in proportion, wherein for the boron carbide ceramic layer, respectively weighing B4C powder 1,Ti powder and C powder in proportion; and for the toughening layer, respectively weighing B4C powder 2, Ti3SiC2 powder, Si powder and B4C powder 3 and WC powder required for generating W2B5 through in-situ reaction according to a proportion; and mixing is characterized by respectively mixing the weighed raw materials in each layer, and then drying and sieving; and controlling the corresponding technological process, carrying out hot pressing or pressureless sintering, and cooling to room temperature to obtain the B4C-based double-layer ceramic composite material. According to the invention, ahot-pressing or pressureless layered compounding method is adopted, and through a macroscopic double-layer structure and a reaction self-generated multiphase composite toughening mechanism, the mechanical properties of the B4C ceramic material are greatly improved.
本发明的一种B4C基双层陶瓷复合材料及其制备方法，属于材料技术领域，该复合材料的制备方法包括配料、混料、干燥、热压烧结或无压烧结等步骤，配料：按比例分别称取双层复合材料的碳化硼陶瓷层和增韧层的配料，其中碳化硼陶瓷层分别按比例称取B4C粉1、Ti粉和C粉；增韧层分别按比例称取B4C粉2，Ti3SiC2粉，Si粉和用于原位反应生成W2B5所需要的B4C粉3和WC粉；混料：分别将每层称好的原料，混料后干燥过筛；控制相应工艺过程，采用热压或无压烧结后，冷却至室温，制得B4C基双层陶瓷复合材料。本发明采用热压或无压层状复合的方法，通过宏观双层结构以及反应自生多相复合增韧机制，大幅改善B4C陶瓷材料的力学性能。
B4C-based double-layer ceramic composite material and preparation method thereof
The invention relates to a B4C-based double-layer ceramic composite material and a preparation method thereof, and belongs to the technical field of materials. The preparation method of the compositematerial comprises the steps of material preparing, mixing, drying, hot pressing sintering or pressureless sintering and the like, wherein material preparing is characterized by respectively weighingmaterials of a boron carbide ceramic layer and a toughening layer of the double-layer composite material in proportion, wherein for the boron carbide ceramic layer, respectively weighing B4C powder 1,Ti powder and C powder in proportion; and for the toughening layer, respectively weighing B4C powder 2, Ti3SiC2 powder, Si powder and B4C powder 3 and WC powder required for generating W2B5 through in-situ reaction according to a proportion; and mixing is characterized by respectively mixing the weighed raw materials in each layer, and then drying and sieving; and controlling the corresponding technological process, carrying out hot pressing or pressureless sintering, and cooling to room temperature to obtain the B4C-based double-layer ceramic composite material. According to the invention, ahot-pressing or pressureless layered compounding method is adopted, and through a macroscopic double-layer structure and a reaction self-generated multiphase composite toughening mechanism, the mechanical properties of the B4C ceramic material are greatly improved.
本发明的一种B4C基双层陶瓷复合材料及其制备方法，属于材料技术领域，该复合材料的制备方法包括配料、混料、干燥、热压烧结或无压烧结等步骤，配料：按比例分别称取双层复合材料的碳化硼陶瓷层和增韧层的配料，其中碳化硼陶瓷层分别按比例称取B4C粉1、Ti粉和C粉；增韧层分别按比例称取B4C粉2，Ti3SiC2粉，Si粉和用于原位反应生成W2B5所需要的B4C粉3和WC粉；混料：分别将每层称好的原料，混料后干燥过筛；控制相应工艺过程，采用热压或无压烧结后，冷却至室温，制得B4C基双层陶瓷复合材料。本发明采用热压或无压层状复合的方法，通过宏观双层结构以及反应自生多相复合增韧机制，大幅改善B4C陶瓷材料的力学性能。
B4C-based double-layer ceramic composite material and preparation method thereof
一种B4C基双层陶瓷复合材料及其制备方法
YUE XINYAN (author) / RU HONGQIANG (author) / WANG JIANJUN (author) / WANG WEI (author) / ZHANG CUIPING (author) / HUANG YUNTAO (author)
2020-12-29
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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