Hf₀.₉₅Nb₀.₀₅B₂ composite ceramics

Densified at 1500 °C

Incorporating SiC enables densification at 1500 °C with ultrafine grains and high-density defects, endowing exceptional hardness and markedly improved fracture toughness.

Zhu, Qiqi · Zou, Ji · Wang, Weimin · Zhang, Jinyong · Guo, Weiming · Lin, Huatay · Ji, Wei · Fu, Zhengyi

Journal of the European Ceramic Society 2023

Specifications

晶粒尺寸

{'zh': '300', 'en': ''} nm

硬度

{'zh': '32', 'en': ''} GPa

断裂韧性

{'zh': '5.2', 'en': ''} MPa·m

Advantages

Not fully densified at 2000 °C/30 MPa

Densified at 1700 °C/200 MPa

Densified at 1500 °C