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Titanium diboride-based nanometer composite cutter material and preparation method thereof
The invention discloses a titanium diboride-based nanometer composite cutter material and a preparation method. According to the invention, titanium diboride is used as a base material, nanometer oxide ceramic and nanometer carbide ceramic are used as sintering aids, and the effects of defect reinforced sintering and liquid-phase reinforced sintering are synergistically exerted; silicon carbide whisker doped graphene is used as a synergistic strengthening and toughening phase, graphene has a relatively large specific surface area and provides a carrier for silicon carbide whiskers and nanometer composite ceramic, and the silicon carbide whiskers are distributed on the surface of the graphene to function as a graphene aggregation blocking agent, so a contact area of silicon carbide whisker-graphene and a material matrix is remarkably increased, good compatibility is obtained, and a silicon carbide whisker/graphene/nanometer composite ceramic/titanium diboride matrix interface is formed;and a synergistic strengthening and toughening mechanism based on multi-element and multi-scale strong and weak hybrid interface regulation and control is introduced to obtain the high-density high-performance titanium diboride-based nanometer composite cutter material which is greatly improved in bending strength, Vickers hardness and fracture toughness.
本发明公开了一种二硼化钛基纳米复合刀具材料及制备方法，以二硼化钛为基料，采用纳米氧化物陶瓷及纳米碳化物陶瓷作为烧结助剂，协同发挥缺陷强化烧结与液相强化烧结作用；碳化硅晶须掺杂石墨烯作为协同强韧化相，石墨烯具有较大的比表面积，为碳化硅晶须及纳米复相陶瓷提供负载体，而碳化硅晶须分布在石墨烯表面，可起到石墨烯聚集阻隔剂的作用，从而显著增大碳化硅晶须‑石墨烯与材料基体的接触面积且相容性好，形成碳化硅晶须/石墨烯/纳米复相陶瓷/二硼化钛基体界面，引入基于多元多尺度强弱混杂界面调控的协同强韧化机理，得到高致密、高性能的二硼化钛基纳米复合刀具材料；制备得到的抗弯强度、维氏硬度和断裂韧性力学性能大大提高。
Titanium diboride-based nanometer composite cutter material and preparation method thereof
The invention discloses a titanium diboride-based nanometer composite cutter material and a preparation method. According to the invention, titanium diboride is used as a base material, nanometer oxide ceramic and nanometer carbide ceramic are used as sintering aids, and the effects of defect reinforced sintering and liquid-phase reinforced sintering are synergistically exerted; silicon carbide whisker doped graphene is used as a synergistic strengthening and toughening phase, graphene has a relatively large specific surface area and provides a carrier for silicon carbide whiskers and nanometer composite ceramic, and the silicon carbide whiskers are distributed on the surface of the graphene to function as a graphene aggregation blocking agent, so a contact area of silicon carbide whisker-graphene and a material matrix is remarkably increased, good compatibility is obtained, and a silicon carbide whisker/graphene/nanometer composite ceramic/titanium diboride matrix interface is formed;and a synergistic strengthening and toughening mechanism based on multi-element and multi-scale strong and weak hybrid interface regulation and control is introduced to obtain the high-density high-performance titanium diboride-based nanometer composite cutter material which is greatly improved in bending strength, Vickers hardness and fracture toughness.
本发明公开了一种二硼化钛基纳米复合刀具材料及制备方法，以二硼化钛为基料，采用纳米氧化物陶瓷及纳米碳化物陶瓷作为烧结助剂，协同发挥缺陷强化烧结与液相强化烧结作用；碳化硅晶须掺杂石墨烯作为协同强韧化相，石墨烯具有较大的比表面积，为碳化硅晶须及纳米复相陶瓷提供负载体，而碳化硅晶须分布在石墨烯表面，可起到石墨烯聚集阻隔剂的作用，从而显著增大碳化硅晶须‑石墨烯与材料基体的接触面积且相容性好，形成碳化硅晶须/石墨烯/纳米复相陶瓷/二硼化钛基体界面，引入基于多元多尺度强弱混杂界面调控的协同强韧化机理，得到高致密、高性能的二硼化钛基纳米复合刀具材料；制备得到的抗弯强度、维氏硬度和断裂韧性力学性能大大提高。
Titanium diboride-based nanometer composite cutter material and preparation method thereof
一种二硼化钛基纳米复合刀具材料及制备方法
SUN JIALIN (Autor:in) / HUANG ZHIFU (Autor:in) / YAN KE (Autor:in) / CHEN FEI (Autor:in) / JIAN YONGXIN (Autor:in) / YANG HEJIE (Autor:in) / LI BO (Autor:in)
19.05.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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