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Preparation method and application of high-toughness diboride-carbide complex-phase high-entropy ceramic
The invention discloses a preparation method and application of high-toughness diboride-carbide complex-phase high-entropy ceramic, belongs to the technical field of ceramic materials, and particularly relates to a preparation method and application of a high-toughness diboride-carbide complex-phase high-entropy ceramic material. The invention aims to solve the problems that the existing single-phase high-entropy ceramic material is difficult to sinter, low in density and poor in fracture toughness, and the application of the single-phase high-entropy ceramic material is limited. The method comprises the following steps: preparing mixed powder of diboride powder and titanium carbide; and 2, hot pressed sintering. The invention relates to application of high-strength and high-toughness diboride-carbide complex-phase high-entropy ceramic in the fields of nuclear reactors and ultrahigh temperature. The density of the prepared composite ceramic is larger than 97%, the strength and the toughness are remarkably improved, the hardness of the ceramic at the room temperature is 35-40 GPa, the three-point bending strength is 800-1100 MPa, and the fracture toughness is 6-8 MPa.m < 1/2 >. According to the invention, the diboride-carbide complex-phase high-entropy ceramic with high strength and toughness can be obtained.
一种高强韧二硼化物‑碳化物复相高熵陶瓷的制备方法和应用，它属于陶瓷材料技术领域，具体涉及一种高强韧的二硼化物‑碳化物复相高熵陶瓷材料的制备方法和应用。本发明的目的是要解决现有单相高熵陶瓷材料烧结困难，致密度低和断裂韧性差，限制了其应用的问题。方法：制备二硼化物粉体和碳化钛的混合粉末；二、热压烧结。一种高强韧二硼化物‑碳化物复相高熵陶瓷在核反应堆和超高温领域中应用。本发明制备的复相陶瓷的致密度均大于97％，强度和韧性均得到显著提升，室温下陶瓷的硬度为35～40GPa，三点弯曲强度为800～1100MPa，断裂韧性为6～8MPa·m1/2。本发明可获得一种高强韧二硼化物‑碳化物复相高熵陶瓷。
Preparation method and application of high-toughness diboride-carbide complex-phase high-entropy ceramic
The invention discloses a preparation method and application of high-toughness diboride-carbide complex-phase high-entropy ceramic, belongs to the technical field of ceramic materials, and particularly relates to a preparation method and application of a high-toughness diboride-carbide complex-phase high-entropy ceramic material. The invention aims to solve the problems that the existing single-phase high-entropy ceramic material is difficult to sinter, low in density and poor in fracture toughness, and the application of the single-phase high-entropy ceramic material is limited. The method comprises the following steps: preparing mixed powder of diboride powder and titanium carbide; and 2, hot pressed sintering. The invention relates to application of high-strength and high-toughness diboride-carbide complex-phase high-entropy ceramic in the fields of nuclear reactors and ultrahigh temperature. The density of the prepared composite ceramic is larger than 97%, the strength and the toughness are remarkably improved, the hardness of the ceramic at the room temperature is 35-40 GPa, the three-point bending strength is 800-1100 MPa, and the fracture toughness is 6-8 MPa.m < 1/2 >. According to the invention, the diboride-carbide complex-phase high-entropy ceramic with high strength and toughness can be obtained.
一种高强韧二硼化物‑碳化物复相高熵陶瓷的制备方法和应用，它属于陶瓷材料技术领域，具体涉及一种高强韧的二硼化物‑碳化物复相高熵陶瓷材料的制备方法和应用。本发明的目的是要解决现有单相高熵陶瓷材料烧结困难，致密度低和断裂韧性差，限制了其应用的问题。方法：制备二硼化物粉体和碳化钛的混合粉末；二、热压烧结。一种高强韧二硼化物‑碳化物复相高熵陶瓷在核反应堆和超高温领域中应用。本发明制备的复相陶瓷的致密度均大于97％，强度和韧性均得到显著提升，室温下陶瓷的硬度为35～40GPa，三点弯曲强度为800～1100MPa，断裂韧性为6～8MPa·m1/2。本发明可获得一种高强韧二硼化物‑碳化物复相高熵陶瓷。
Preparation method and application of high-toughness diboride-carbide complex-phase high-entropy ceramic
一种高强韧二硼化物-碳化物复相高熵陶瓷的制备方法和应用
HUO SIJIA (author) / CHEN LEI (author) / WANG YUJIN (author) / KONG QINGYI (author) / ZHOU YU (author)
2022-04-01
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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