微波-熔盐热处理在CBN表面形成TiN类石墨烯晶体

基金项目:

国家国际科技合作专项项目（2015DFR50620）；河南省高校创新团队项目（15IRTSTHN004）。

TiN graphene crystals on the surface of CBN by microwave-salt molten treatment

1. School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 451191, China;
2. National and Local Joint Laboratory of Engineering of Diamond Technology, Zhengzhou 451191, China;
3. Science and Technology Department, Zhongyuan University of Technology, Zhengzhou 451191, China;
4. Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China;
5. Isharp Abrasives Tools Science Institute, Zhengzhou 450006, China

摘要: 用Ti和CBN粉体，通过微波-熔盐处理法在CBN表面反应生成氮化物材料，利用XRD、SEM和EDS对涂层的化学组成、相组成和微观结构进行分析和表征。结果表明：经过熔盐处理，在CBN表面形成TiN、Ti₂N、TiN_0.3和TiB₂组织。粗粒度的CBN表面形成的涂层厚度约2.8 μm，涂层表面有许多微小孔洞；当CBN较细时，CBN表面形成纳米花蕾状组织，花蕾状涂层组织由许多氮化钛纳米棒和片状组织构成。此外，CBN颗粒间还存在许多TiN类石墨烯晶体组织，厚度约40~90 nm。
- 熔盐处理 /
- 立方氮化硼(CBN) /
- 石墨烯晶体
Abstract: Titanium nitride on the surface of cubic boron nitride (CBN) was obtained by heat treatment of Ti and CBN with microwave and salt molten. Chemical compositions, phase compositions and microstructures were analyzed and characterized using XRD, SEM and EDS methods. The results show that TiN, Ti₂N, TiN_0.3 and TiB₂ organization were formed on the surface of CBN by molten-salt treatment. The coating of CBN with a coarser size had a thickness of about 2.8 μm. There were many micro pores on this coating. Flower bud nanometer coating was formed on the fine-grained CBN surface. This coating had many titanium nitride nano-rods and nano sheets. In addition to, some TiN graphene crystals, 40-90 nm thick were obtained among CBN particles.
- salt molten treatment /
- cubic boron nitride (CBN) /
- graphene crystals