| PCBN材料的组织结构与力学性能 |
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| 引用本文： | 张彬,郭宏毅. PCBN材料的组织结构与力学性能[J]. 金刚石与磨料磨具工程, 2022, 42(6): 699-704. DOI: 10.13394/j.cnki.jgszz.2022.0078 |
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| 作者姓名： | 张彬 郭宏毅 |
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| 作者单位： | 1.河南省特种设备安全检测研究院, 郑州 4500462.开封市质量技术监督检验测试中心, 河南 开封475000 |
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| 摘 要： | 以CBN-TiN-Ti-Al2O3为初始原料,采用高温高压法在1500 ℃不同保温时间下制备PCBN材料,探讨其在不同保温时间下的物相组成、显微结构、力学性能和切削性能。结果表明:保温时间对PCBN材料物相组成无明显影响,但有助于提高其结晶度,实现其烧结均匀化和致密化;在保温时间为9.00 min时,能获得综合性能最佳的PCBN材料,其相对密度为99.1%,抗弯强度为910.9 MPa,磨耗比为7120,显微硬度为33.5 GPa;用此PCBN做成的刀具加工模具钢零件,最多可加工365个。
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| 关 键 词： | 聚晶立方氮化硼 高温高压 力学性能 切削 |
| 收稿时间： | 2022-05-25 |
Microstructures and mechanical properties of PCBN materials |
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| ZHANG Bin,GUO Hongyi. Microstructures and mechanical properties of PCBN materials[J]. Diamond & Abrasives Engineering, 2022, 42(6): 699-704. DOI: 10.13394/j.cnki.jgszz.2022.0078 |
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| Authors: | ZHANG Bin GUO Hongyi |
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| Affiliation: | 1.Henan Institute of Special Equipment Safety Inspection and Testing, Zhengzhou 450046, China2.Kaifeng Quality and Technical Supervision Inspection and Testing Center, Kaifeng 475000, Henan, China |
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| Abstract: | The PCBN material was prepared by high temperature and high pressure method at 1 500℃ and different holding times with CBN-TiN-Ti-Al2O3 as the initial raw material. The phase compositions, microstructures, mechanical properties and cutting performance of PCBN under different sintering holding times were discussed. The results show that the holding time has no obvious effect on the phase compositions of PCBN, but it is helpful to improve its crystallinity and to realize its sintering uniformity and densification. When the holding time is 9.00 min, the PCBN material with the best comprehensive performance can be obtained with the relative density of 99.1%, the bending strength of 910.9 MPa, the wear ratio of 7120 and the microhardness of 33.5 GPa. The tool made of this PCBN can process up to 365 die steel parts. |
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