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Zirconium oxide-based nano ceramic tool and die material added with titanium boride and preparation method thereof

A nano-ceramic and tooling technology, which is applied in the field of ceramic tooling materials and its preparation, can solve the problems of fully exerting the performance advantages of nano-composite ceramics, and achieve the effects of improving oxidation resistance, high strength, and reducing friction coefficient

Inactive Publication Date: 2012-07-25
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen from the existing research that the performance advantages of nanocomposite ceramics have not yet been fully utilized in the fields of tools and molds.

Method used

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  • Zirconium oxide-based nano ceramic tool and die material added with titanium boride and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Nano-ceramic tooling and mold materials, the volume percentage of raw material components is: 81% 5Y-ZrO 2 , 8%TiB 2 , 7% α-Al 2 o 3 , 1.1% Mo, 1.9% Ni, 1% MgO. The preparation method is as follows:

[0037] Weigh 5Y-ZrO in proportion 2 Nano-powder, polyethylene glycol (PEG4000) with a molecular weight of 4000 as a dispersant, with 5Y-ZrO 2 The mass of nano-powder is the base number, and the addition amount of the dispersant is 0.6wt%; with an appropriate amount of absolute ethanol as the dispersion medium, it is made into 5Y-ZrO 2 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 raw material TiB 2 and α-Al 2 o 3 The powders were individually ball-milled for 70 hours, and then dried continuously in an electric vacuum oven at 110°C. After complete drying, they were sieved in an inert gas flow and sealed for later use. Weigh the prepared TiB in proportion 2 ...

Embodiment 2

[0039] Nano-ceramic tooling and mold materials, the volume percentage of raw material components is: 86.7% 5Y-ZrO 2 , 5%TiB 2 , 5% α-Al 2 o 3 , 1% Mo, 1.5% Ni, 0.8% MgO. The preparation method is as follows:

[0040] Weigh 5Y-ZrO in proportion 2 Nano-powder, polyethylene glycol (PEG4000) with a molecular weight of 4000 as a dispersant, with 5Y-ZrO 2 The mass of nano-powder is the base number, and the addition amount of the dispersant is 0.3wt%; with an appropriate amount of absolute ethanol as the dispersion medium, it is made into 5Y-ZrO 2 Suspension, fully stirred with a stirrer, ultrasonically dispersed for 20min, and then HCl and NH 4 OH to adjust the pH of the suspension to 4; the TiB 2 and α-Al 2 o 3 The powders were individually ball-milled for 60 hours, and then dried continuously in an electric vacuum oven at 120°C. After complete drying, they were sieved in an inert gas flow and sealed for later use. Weigh the prepared TiB in proportion 2 Powder, add absol...

Embodiment 3

[0042] Nano-ceramic tooling and mold materials, the volume percentage of raw material components is: 72.8% 5Y-ZrO 2 , 12%TiB 2 , 10% α-Al 2 o 3 , 1.5% Mo, 2.5% Ni, 1.2% MgO. The preparation method is as follows:

[0043] Weigh 5Y-ZrO in proportion 2 Nano-powder, polyethylene glycol (PEG4000) with a molecular weight of 4000 as a dispersant, with 5Y-ZrO 2 The mass of nano-powder is the base number, and the addition amount of the dispersant is 0.8wt%; with an appropriate amount of absolute ethanol as the dispersion medium, it is made into 5Y-ZrO 2 Suspension, fully stirred with a stirrer, ultrasonically dispersed for 30min, and then HCl and NH 4 OH to adjust the pH of the suspension to 3; the TiB 2 and α-Al 2 o 3 The powders were individually ball-milled for 80 hours, and then dried continuously in an electric vacuum oven at 110°C. After complete drying, they were sieved in an inert gas flow, and sealed for later use. Weigh the prepared TiB in proportion 2 Powder, add ...

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Abstract

The invention relates to a nano ceramic tool and die material and a preparation method thereof. The ceramic tool and die material is sintered from yttrium stabilized nano ZrO2 serving as matrix, added micro TiB2 and micro alpha-Al2O3 serving as enhancing phases and micro molybdenum, nickel and magnesium oxide serving as sintering aids. The preparation method comprises the following steps: dispersing the nano ZrO2, micro TiB2 and micro alpha-Al2O3 powder respectively, ball-mixing and drying the power to obtain a powdery material, and sintering the powdery material by adopting a hot-pressing method. The method is favorable for improving the mechanical property of the material, and has the advantages of simple preparation, convenient operation and the like. The obtained nano ceramic tool anddie material has good comprehensive mechanical property, friction reduction and abrasion resistance, and can be used for manufacturing cutting tools, dies and other abrasion and corrosion resistant parts.

Description

technical field [0001] The invention relates to a ceramic mold material and a preparation method thereof, in particular to a zirconia-based nanometer ceramic mold material added with titanium boride and a preparation method thereof. Background technique [0002] Ceramic materials have excellent thermal stability and wear resistance, making them ideal materials for making tools such as knives and molds. CN1332262A provides a kind of cermet mold material, chemical composition (weight %) is: w10-60%, Cr38.5-80%, Al 2 o 3 1-30%, La 2 o 3 0-15%, any one of Ni, Co, Fe or the sum of any two or more is 0.5-20%. The material has high red hardness, good thermal stability, excellent oxidation resistance and wear resistance, good toughness, and excellent resistance to rapid cooling and rapid heating. [0003] 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 toughnes...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/48C04B35/622
Inventor 许崇海衣明东张静婕王兴海张会发
Owner QILU UNIV OF TECH
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