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Composite rare earth-stabilized zirconia-based multielement nano/micro composite ceramic tool and die material and preparation method thereof

A technology of composite ceramics and tools and molds, which is applied in the field of composite rare earth stabilized zirconia-based multi-component nano-micron composite ceramic tool and mold materials and its preparation, and can solve the problems of nanocomposite performance and price advantages that cannot be fully utilized in the field of tools and molds. , to achieve the effect of improving mechanical properties and performance, high aging resistance and defect resistance, and good comprehensive performance

Inactive Publication Date: 2012-11-14
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] It can be seen from the existing research that the performance and price advantages of nanocomposites, especially nanocomposite ceramics, have not been fully utilized in the field of tools and molds.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Nano-micron composite ceramic tooling material, the volume percentage of raw material components is: 49% ZrO 2 , 20%Ti(C,N), 15%α-Al 2 o 3 , 3%Y 2 o 3 , 6% CeO 2 , 3.6% Ni, 2.4% Mo, 1% MgO. The preparation method is as follows:

[0038] Weigh micron ZrO in proportion 2 and α-Al 2 o 3 Powder, with an appropriate amount of absolute ethanol as the dispersion medium, respectively made into ZrO 2 and α-Al 2 o 3 Suspension, fully stirred with a stirrer, ultrasonically dispersed for 30 minutes; nano-TiC powder was weighed in proportion, polyethylene glycol (PEG4000) with a molecular weight of 4000 was used as a dispersant, and the amount of dispersant added was based on the mass of the TiC powder 0.4wt%, with an appropriate amount of ethanol as the dispersion medium, made into a TiC suspension, fully stirred with a stirrer, ultrasonically dispersed for 30min, and then HCl and NH 4 OH to adjust the pH value of the suspension to 4; the resulting ZrO 2 , Ti(C,N) and ...

Embodiment 2

[0041] Nano-micron composite ceramic tooling material, the volume percentage of raw material components is: 61.8% ZrO 2 , 15%Ti(C,N), 10%α-Al 2 o 3 , 2%Y 2 o 3 , 4% CeO 2 , 2% Ni, 4% Mo, 1.2% MgO. The preparation method is as follows:

[0042] Weigh micron ZrO in proportion 2 and α-Al 2 o 3 Powder, with an appropriate amount of absolute ethanol as the dispersion medium, respectively made into ZrO 2 and α-Al 2 o 3 Suspension, fully stirred with a stirrer, ultrasonically dispersed for 20 minutes; nano-TiC powder was weighed in proportion, polyethylene glycol (PEG4000) with a molecular weight of 4000 was used as a dispersant, and the amount of dispersant added was based on the mass of the TiC powder 0.2wt%, with an appropriate amount of absolute ethanol as the dispersion medium, made into a TiC suspension, fully stirred with a stirrer, ultrasonically dispersed for 25min, and then HCl and NH 4 OH to adjust the pH value of the suspension to 3; the resulting ZrO 2 , Ti(...

Embodiment 3

[0044] Nano-micron composite ceramic tooling material, the volume percentage of raw material components is: 55.2% ZrO 2 , 20%Ti(C,N), 10%α-Al 2 o 3 , 3%Y 2 o 3 , 5% CeO 2 , 3% Ni, 3% Mo, 0.8% MgO. The preparation method is as follows:

[0045] Weigh micron ZrO in proportion 2 and α-Al 2 o 3 Powder, with an appropriate amount of absolute ethanol as the dispersion medium, respectively made into ZrO 2 and α-Al 2 o 3 Suspension, fully stirred with a stirrer, ultrasonically dispersed for 25 minutes; nano-TiC powder was weighed in proportion, polyethylene glycol (PEG4000) with a molecular weight of 4000 was used as a dispersant, and the amount of dispersant added was based on the mass of the TiC powder 0.8wt%, with an appropriate amount of absolute ethanol as the dispersion medium, made into a TiC suspension, fully stirred with a stirrer, ultrasonically dispersed for 30min, and then HCl and NH 4 OH to adjust the pH value of the suspension to 4; the resulting ZrO 2 , Ti(...

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Abstract

The invention relates to a nano / micro composite ceramic tool and die material and a preparation method thereof. The preparation method of the material adopts nano / micro composition method, uses micro-ZrO2 as matrix, adds nano-TiC and micro-alpha-Al2O3 as reinforcement phase, uses micro-Y2O3 and micro-CeO2 as stabilizers and micro-Mo, micro-Ni and micro-MgO as sintering additives to perform hot-pressing sintering and obtain the material. The preparation method comprises the following steps: respectively dispersing micro-ZrO2, nano-TiC and micro-alpha-Al2O3 powder, performing ball-milling, drying to obtain powder, and adopting hot-pressing method to sinter. By using the method, the mechanical properties of the material is easy to improve and the method has the advantages of simple preparation method, convenient operation and low cost. The obtained nano / micro composite ceramic tool and die material has good comprehensive mechanical properties and antifriction and wear resistance and can be used for preparing the ceramic tools and dies such as squeezing dies, drawing dies and cutting tools.

Description

technical field [0001] The invention relates to a ceramic mold material and a preparation method thereof, in particular to a composite rare earth stabilized zirconia-based multi-component nano-micron composite ceramic mold material and a preparation method thereof. Background technique [0002] Ceramic cutting tools have high hardness and wear resistance, and exhibit excellent cutting performance in high-speed cutting and dry cutting, and are a class of cutting tool materials with great development prospects. However, most of the currently used ceramic tool materials are limited to micro-composite ceramics, and the mechanical properties of the materials, especially the strength and toughness, still need to be further improved. According to the Hall-petch relationship: the smaller the grain size, the higher the strength of the ceramic material. Therefore, the research and development of nano-modified and nano-micro composite ceramic tool materials will be one of the main dir...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/488C04B35/622
Inventor 许崇海赵诗奎衣明东王兴海张会发
Owner QILU UNIV OF TECH