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Preparation method of polycrystalline cubic boron nitride with high wear resistance and high toughness
The invention discloses a preparation method of high-wear-resistance and high-toughness polycrystalline cubic boron nitride, and relates to the technical field of manufacturing of PcBN superhard wear-resistant materials, submicron cBN is used for synthesizing PcBN, the compactness is higher, the wear resistance is better, a sol-gel method is adopted for preparing SiC-cBN composite powder, SiC is used for coating the surface, a bridge effect is achieved at the cBN connecting position, and the service life of the SiC-cBN composite powder is prolonged. The toughness of the PcBN is improved; meanwhile, cBN is wrapped with SiC, and in the synthesis process, cBN can be prevented from being inversely converted into hBN; therefore, the wear resistance and toughness of the polycrystalline cubic boron nitride are further improved, and the durability of the cutter manufactured by the method is improved.
本发明公开了一种兼具高耐磨、高韧性聚晶立方氮化硼的制备方法，涉及PcBN超硬耐磨材料制造技术领域，使用亚微米级cBN合成PcBN，致密性更高，耐磨性更优，采用溶胶‑凝胶的方法，制备SiC‑cBN复合粉体，既利用SiC包覆表面，又在cBN连接处起到桥梁的作用，增加PcBN的韧性；同时采用SiC包裹cBN，合成过程中，能够阻止cBN逆转化为hBN；从而进一步的提升聚晶立方氮化硼的耐磨性能和韧性，提升以此方法制作刀具的耐久性。
Preparation method of polycrystalline cubic boron nitride with high wear resistance and high toughness
The invention discloses a preparation method of high-wear-resistance and high-toughness polycrystalline cubic boron nitride, and relates to the technical field of manufacturing of PcBN superhard wear-resistant materials, submicron cBN is used for synthesizing PcBN, the compactness is higher, the wear resistance is better, a sol-gel method is adopted for preparing SiC-cBN composite powder, SiC is used for coating the surface, a bridge effect is achieved at the cBN connecting position, and the service life of the SiC-cBN composite powder is prolonged. The toughness of the PcBN is improved; meanwhile, cBN is wrapped with SiC, and in the synthesis process, cBN can be prevented from being inversely converted into hBN; therefore, the wear resistance and toughness of the polycrystalline cubic boron nitride are further improved, and the durability of the cutter manufactured by the method is improved.
本发明公开了一种兼具高耐磨、高韧性聚晶立方氮化硼的制备方法，涉及PcBN超硬耐磨材料制造技术领域，使用亚微米级cBN合成PcBN，致密性更高，耐磨性更优，采用溶胶‑凝胶的方法，制备SiC‑cBN复合粉体，既利用SiC包覆表面，又在cBN连接处起到桥梁的作用，增加PcBN的韧性；同时采用SiC包裹cBN，合成过程中，能够阻止cBN逆转化为hBN；从而进一步的提升聚晶立方氮化硼的耐磨性能和韧性，提升以此方法制作刀具的耐久性。
Preparation method of polycrystalline cubic boron nitride with high wear resistance and high toughness
一种兼具高耐磨、高韧性聚晶立方氮化硼的制备方法
WANG XUEFENG (author) / LIU LU (author) / WAN ZHIKUN (author) / ZHANG XIAOYOU (author) / LIU WEI (author) / HAN SHUNLI (author) / MA WENXIANG (author) / CHEN XIN (author) / XUE HAIBIN (author) / GAO ZHENMIN (author)
2023-09-01
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2020
| European Patent Office | 2018