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High-entropy composite strengthening and toughening gradient ceramic cutter material as well as preparation method and application thereof
The invention discloses a high-entropy composite strengthening and toughening gradient ceramic cutter material as well as a preparation method and application thereof, and belongs to the technical field of ceramic cutter materials. The composite material has a symmetrical five-layer structure which sequentially comprises a surface layer, a transition layer, a core layer, a transition layer and a surface layer, the surface layer comprises the following components in parts by mass: 85-91 parts of aluminum oxide and 9-15 parts of high-entropy carbide; the transition layer is prepared from 82.8 to 90.8 parts of aluminum oxide, 6 to 12 parts of high-entropy carbide, 3 to 5 parts of zirconium dioxide and 0.2 part of graphene; and the core layer comprises 82-91 parts of aluminum oxide, 3-9 parts of high-entropy carbide and 6-9 parts of high-entropy alloy. The high-hardness, high-toughness and high-entropy composite strengthening and toughening gradient ceramic cutter material is obtained through liquid phase and solid phase two-step sintering by organically combining thermal stress relief and surface residual compressive stress characteristics of a gradient structure with multiple strengthening and toughening mechanisms introduced by graphene high-entropy composite, and the adaptability and resistance of a cutter to high-speed cutting are remarkably improved.
本发明公开了一种高熵复合强韧化梯度陶瓷刀具材料及其制备方法与应用，属于陶瓷刀具材料技术领域。其具有对称的五层结构，依次为表层、过渡层、芯层、过渡层和表层；按质量份数计，表层包括三氧化二铝85～91份、高熵碳化物9～15份；过渡层包括三氧化二铝82.8～90.8份、高熵碳化物6～12份、二氧化锆3～5份、石墨烯0.2份；芯层包括三氧化二铝82～91份、高熵碳化物3～9份、高熵合金6～9份。将梯度结构的热应力缓解及表面残余压应力特性与石墨烯高熵复合引入的多种强韧化机制有机结合，通过液相+固相二步烧结，获得高硬度、高强韧高熵复合强韧化梯度陶瓷刀具材料，显著提升刀具对于高速切削的适应和抵抗能力。
High-entropy composite strengthening and toughening gradient ceramic cutter material as well as preparation method and application thereof
The invention discloses a high-entropy composite strengthening and toughening gradient ceramic cutter material as well as a preparation method and application thereof, and belongs to the technical field of ceramic cutter materials. The composite material has a symmetrical five-layer structure which sequentially comprises a surface layer, a transition layer, a core layer, a transition layer and a surface layer, the surface layer comprises the following components in parts by mass: 85-91 parts of aluminum oxide and 9-15 parts of high-entropy carbide; the transition layer is prepared from 82.8 to 90.8 parts of aluminum oxide, 6 to 12 parts of high-entropy carbide, 3 to 5 parts of zirconium dioxide and 0.2 part of graphene; and the core layer comprises 82-91 parts of aluminum oxide, 3-9 parts of high-entropy carbide and 6-9 parts of high-entropy alloy. The high-hardness, high-toughness and high-entropy composite strengthening and toughening gradient ceramic cutter material is obtained through liquid phase and solid phase two-step sintering by organically combining thermal stress relief and surface residual compressive stress characteristics of a gradient structure with multiple strengthening and toughening mechanisms introduced by graphene high-entropy composite, and the adaptability and resistance of a cutter to high-speed cutting are remarkably improved.
本发明公开了一种高熵复合强韧化梯度陶瓷刀具材料及其制备方法与应用，属于陶瓷刀具材料技术领域。其具有对称的五层结构，依次为表层、过渡层、芯层、过渡层和表层；按质量份数计，表层包括三氧化二铝85～91份、高熵碳化物9～15份；过渡层包括三氧化二铝82.8～90.8份、高熵碳化物6～12份、二氧化锆3～5份、石墨烯0.2份；芯层包括三氧化二铝82～91份、高熵碳化物3～9份、高熵合金6～9份。将梯度结构的热应力缓解及表面残余压应力特性与石墨烯高熵复合引入的多种强韧化机制有机结合，通过液相+固相二步烧结，获得高硬度、高强韧高熵复合强韧化梯度陶瓷刀具材料，显著提升刀具对于高速切削的适应和抵抗能力。
High-entropy composite strengthening and toughening gradient ceramic cutter material as well as preparation method and application thereof
一种高熵复合强韧化梯度陶瓷刀具材料及其制备方法与应用
SUN JIALIN (Autor:in) / ZHANG KUIYIN (Autor:in) / XU XIN (Autor:in)
20.02.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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