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Fiber-like composite phase ceramic and preparation method

A technology of multiphase ceramics and fibrous body, applied in the field of fibrous body multiphase ceramics and preparation, can solve the problems of complicated preparation process and limited improvement of the toughness of ceramic materials, etc.

Active Publication Date: 2019-08-30
NINGBO VULCAN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patent with application number 201810820198.6 mentions a preparation method of boron carbide / silicon carbide layered composite ceramic material, which is first formed layer by layer by gel injection molding, and then sintered by hot pressing forming process. The preparation process is complex, and the layered structure ceramics prepared by this process still have limited improvement in the toughness of ceramic materials

Method used

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  • Fiber-like composite phase ceramic and preparation method
  • Fiber-like composite phase ceramic and preparation method
  • Fiber-like composite phase ceramic and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Slice and layer the fiber-like ceramic model to be prepared, and design it according to the composition of the composite ceramics as attached figure 1 The printing programs of the two complementary paths A and B are shown, and the program is imported into the printing device program; 74.5wt% silicon carbide powder, 0.5wt% boron carbide powder, 0.5wt% ammonium polyacrylate, 0.5wt% phenolic resin , 24wt% deionized water ball milling and mixing for 24 hours, then vacuum defoaming the slurry in a vacuum defoaming machine for 10 minutes to prepare the first ceramic slurry; according to step 2, select boron carbide powder to prepare the second ceramic slurry ;Add the first ceramic slurry to the first barrel, and the second ceramic slurry to the second barrel, and heat the printing nozzle to 50°C, choose a square nozzle with an aperture of 0.3mm, the nozzle of the 3D printer Under the control of the printing program, the ceramic slurry is extruded into a filamentous unit body,...

Embodiment 2

[0028] Slicing and layering the fiber-like ceramic model to be prepared, and designing the composite ceramic model as attached figure 2 The printing programs of the two complementary paths A and B are shown, and the program is imported into the printing device program; 84wt% alumina powder, 1wt% zirconia powder, 0.2wt% polyethylene glycol, 0.8wt% agarose, 14wt% deionized water was ball milled and mixed for 24 hours, and then the slurry was vacuum defoamed in a vacuum defoaming machine for 10 minutes to prepare the first ceramic slurry; according to step 2, the zirconia powder was selected to prepare the second ceramic slurry; Add the first ceramic slurry into the first barrel, add the second ceramic slurry into the second barrel, and heat the printing nozzle to 50°C. Choose a square nozzle with an aperture of 0.3mm. The nozzle of the 3D printer is in the Under the control of the printing program, the ceramic slurry is extruded into a filamentary unit body, and gradually piled...

Embodiment 3

[0030] Slicing and layering the fiber-like ceramic model to be prepared, and designing the composite ceramic model as attached image 3The printing programs of the two complementary paths A and B are shown, and the program is imported into the printing device program; 84wt% alumina powder, 1wt% zirconia powder, 0.2wt% polyethylene glycol, 0.8wt% agarose, 14wt% deionized water was ball milled and mixed for 24 hours, and then the slurry was vacuum defoamed in a vacuum defoaming machine for 10 minutes to prepare the first ceramic slurry; according to step 2, the zirconia powder was selected to prepare the second ceramic slurry; Add the first ceramic slurry into the first barrel, add the second ceramic slurry into the second barrel, and heat the printing nozzle to 50°C. Choose a square nozzle with an aperture of 0.3mm. The nozzle of the 3D printer is in the Under the control of the printing program, the ceramic slurry is extruded into a filamentary unit body, and gradually piled u...

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Abstract

The invention discloses a fiber-like composite phase ceramic and a preparation method. The ceramic is of a multi-layer piling structure, wherein each layer of the ceramic consists of 1-50 one-dimensional silk-like first ceramics printed according to a printing path of a 3D printer, and 1-50 one-dimensional silk-like second ceramics printed according to another printing path of the 3D printer, in parallel distribution; and printing paths between two adjacent layers are perpendicular to each other or are in a certain included angle. By adopting the ceramic, the toughness of the ceramic can be greatly improved, the toughness of the ceramic is remarkably prior to that of a laminated composite phase ceramic, and in case of mechanical impact, energy can be greatly absorbed by interferences formed by phase constitution differences of silk-like ceramic units, and cracking development can be prevented.

Description

technical field [0001] The invention relates to the technical field of ceramic preparation, in particular to a fiber-like composite phase ceramic and a preparation method. Background technique [0002] Ceramic materials have high hardness, high strength, high wear resistance, low thermal expansion coefficient and excellent chemical stability, making them widely used in armor protection, petrochemical, iron and steel metallurgy, mechanical electronics, aerospace and other industrial fields. However, the brittleness of ceramic materials has become its fatal shortcoming, which makes it very easy to crack during the impact process, resulting in the failure of the material. Improving the toughness of ceramic materials is one of the important hotspots in the research of ceramic materials. [0003] At present, the structural design of layered ceramics, through the interface formed by the difference in composition between different layers, can absorb the energy generated during the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/48C04B35/563C04B35/565C04B35/622C04B35/10B33Y70/00B33Y10/00B28B1/00
CPCB28B1/001B33Y10/00B33Y70/00C04B35/10C04B35/48C04B35/563C04B35/565C04B35/622C04B2235/6026C04B2235/77
Inventor 邬国平熊礼俊谢方民焦永峰戚明杰郭岱东于明亮杨连江肖清
Owner NINGBO VULCAN TECH CO LTD
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