TiC ceramic with laminated structure, and preparation method of TiC ceramic

Abstract

The invention provides a TiC ceramic with a laminated structure, and a preparation method of the TiC ceramic. The TiC ceramic with the laminated structure sequentially comprises a Ti layer, a Ti-C gradual change transition layer, a C layer, a Ti-C gradual change transition layer, a Ti layer... a Ti-C gradual change transition layer, a C layer, a Ti-C gradual change transition layer and a Ti layerfrom bottom to top. The TiC ceramic with the laminated structure has the toughness of titanium and the hardness of carbon, and has good ductility, heat resistance, wear resistance and impact resistance. According to the invention, printing is conducted layer by layer through 3D printing equipment according to the stacking sequence of the Ti layer, the C layer, the Ti layer, the C layer and the Tilayer, and an interface between the Ti layer and the C layer is subjected to rapid cold machining treatment through ultra-strong pulse energy beams or particle beams to form a Ti-C gradient transitionlayer combining the Ti layer and the C layer is formed, so that the problems of poor chemical compatibility and wettability of a titanium nano material and a carbon nano material can be solved, compounding of the titanium nano material and the carbon nano material can be well achieved, and then the TiC ceramic which is high in interface bonding and has a laminated structure is formed.

Description

technical field [0001] The invention belongs to the technical field of metal-ceramic composite materials, and in particular relates to a TiC ceramic with a laminated structure and a preparation method thereof. Background technique [0002] Titanium metal and its alloys have light weight, high strength, good biocompatibility and corrosion resistance, and are widely used in aviation, medical and other fields. Carbon nanomaterials have excellent mechanical, thermal, and electrical properties, and their strength modulus and thermal conductivity are much higher than existing metal materials. Therefore, carbon nanomaterials have become one of the best choices for metal matrix ceramic composite reinforcements. Combining carbon nanomaterials and titanium alloys can greatly improve the mechanical strength, electrical conductivity, and thermal conductivity of the titanium matrix by adjusting the content and distribution of the carbon nano-reinforced phase, and obtain a structurally fu...

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Problems solved by technology

[0003] At present, in the process of compounding carbon nanomaterials and titanium matrix, due to the poor chemical compatibility and wettability of titanium materials and carbon nanomaterials, it is easy to react at the interface between titanium nanomaterials and carbon nanomaterials to generate many defects, such as TiCx, etc. , seriously reducing the performance of carbon-titanium composites

Moreover, the thermal expansion coefficient of carbon nanomaterials is quite different from that of titanium, which can easily cause thermodynamic mismatch at the composite interface formed between carbon nanomaterials and titanium, resulting in stress concentration, resulting in the formation of carbon nanomaterials and titanium. Cracks or voids occur at the interface, resulting in a serious decline in the hardness, impact resistance, wear resistance, fatigue resistance and other properties of carbon nanomaterials-titanium composites

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