How to make nitride boron ceramic?
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To make nitride boron ceramic, several methods can be employed based on the desired properties of the ceramic. One method involves using boron nitride powder and boron oxide powder in specific proportions for sintering through double-heating-mode, ensuring uniform temperature fields . Another approach combines boron nitride and boron carbide powders, followed by vacuum sintering to create a boron nitride-boron carbide composite ceramic with high strength and toughness . Additionally, a method involving nitridation sintering after pre-pressing forming is utilized to produce nitride modified boron carbide composite ceramic with enhanced density, bending strength, and hardness . For high-strength boron nitride ceramic, nano cubic boron nitride powder is sintered using spark plasma or hot-pressing equipment . Lastly, a low-oxygen-content boron nitride ceramic is prepared by heat treatment and hot pressing sintering with nitrogen introduction to reduce oxygen content .
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| Papers (5) | Insight |
|---|---|
| To make nitride boron ceramic, heat treat boron nitride powder in an atmosphere, then conduct hot pressing sintering while introducing nitrogen to reduce oxygen content to less than 0.1 wt%. | |
| To make high-strength boron nitride ceramic, use single-particle-size nano cubic boron nitride powder, conduct pre-pressing forming, then sinter in spark plasma or hot-pressing equipment, and finally cool and demold. | |
| Boron nitride ceramic is made from 95-99% boron nitride powder and 1-5% boron oxide powder through double-heating-mode sintering involving current and radiation heating, achieving high density and compactness. | |
| To make boron nitride-boron carbide composite ceramic, mix boric acid and urea, ball mill, heat at 950-1200°C for boron nitride powder, then add boron carbide, ball mill, and sinter. | |
| The nitride modified boron carbide composite ceramic is made by matching ceramic raw materials, pre-pressing forming, and vacuum nitridation sintering, resulting in high density, bending strength of 338 MPa, and hardness of 32.10 GPa. |
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