Aluminum oxide-based nano-composite ceramic mold material and preparation method thereof

A composite ceramic mold and alumina technology, which is applied in the field of ceramic mold materials, can solve problems such as poor toughness, achieve the effects of preventing grain growth, improving comprehensive mechanical properties, and good comprehensive mechanical properties

Inactive Publication Date: 2017-12-08
SUZHOU HAOYAN PRECISION MOLD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problem of poor toughness of existing ceramic mold materials, and to provide an alumina-based nanocomposite ceramic mold material and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] An aluminum oxide-based nanocomposite ceramic mold material, the raw materials include in parts by weight: 80 parts of aluminum oxide, 0.8 parts of lecithin, 12 parts of silicon carbide, 18 parts of calcium sulfate whiskers, 2 parts of zirconia, 3 parts of titanium oxide, 0.8 parts of zinc oxide, 1 part of molybdenum, 0.5 parts of magnesium oxide, and 1 part of nickel.

[0021] Wherein, the particle size of the aluminum oxide is 20-80nm; the particle size of the silicon carbide is 5-10nm; the particle size of the zirconium oxide, titanium oxide and zinc oxide is 10-20nm.

[0022] The titanium oxide is doped with silicon oxide, and the specific modification method is as follows: prepare the titanium oxide into a 20g / L suspension, adjust the pH value of the suspension to 10 with 0.5M sodium hydroxide solution, ultrasonically disperse, and heat up To 85°C, add dropwise 1mol / L sodium silicate aqueous solution to the suspension under stirring condition, the dosage of sodium ...

Embodiment 2

[0032] An alumina-based nanocomposite ceramic mold material, the raw materials include: 90 parts by weight of alumina, 1.1 parts of lecithin, 15 parts of silicon carbide, 20 parts of calcium sulfate whiskers, 3 parts of zirconia, 4 parts of titanium oxide, 1.8 parts of zinc oxide, 2 parts of molybdenum, 0.8 parts of magnesium oxide, and 2 parts of nickel.

[0033] Wherein, the particle size of the aluminum oxide is 20-80nm; the particle size of the silicon carbide is 5-10nm; the particle size of the zirconium oxide, titanium oxide and zinc oxide is 10-20nm.

[0034] The titanium oxide is doped with silicon oxide, and the specific modification method is as follows: prepare the titanium oxide into a 20g / L suspension, adjust the pH value of the suspension to 10 with 0.5M sodium hydroxide solution, ultrasonically disperse, and heat up To 85°C, add dropwise 1mol / L sodium silicate aqueous solution to the suspension under stirring condition, the dosage of sodium silicate is m(SiO 2 ...

Embodiment 3

[0044] An alumina-based nanocomposite ceramic mold material, the raw materials include: 100 parts by weight of alumina, 1.5 parts of lecithin, 18 parts of silicon carbide, 22 parts of calcium sulfate whiskers, 4 parts of zirconia, 5 parts of titanium oxide, Zinc oxide 2.5 parts, molybdenum 3 parts, magnesium oxide 1.2 parts, nickel 3 parts.

[0045] Wherein, the particle size of the aluminum oxide is 20-80nm; the particle size of the silicon carbide is 5-10nm; the particle size of the zirconium oxide, titanium oxide and zinc oxide is 10-20nm.

[0046] The titanium oxide is doped with silicon oxide, and the specific modification method is as follows: prepare the titanium oxide into a 20g / L suspension, adjust the pH value of the suspension to 10 with 0.5M sodium hydroxide solution, ultrasonically disperse, and heat up To 85°C, add dropwise 1mol / L sodium silicate aqueous solution to the suspension under stirring condition, the dosage of sodium silicate is m(SiO 2 ):m(TiO 2 )=1:...

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Abstract

The invention provides an aluminum oxide-based nano-composite ceramic mold material and a preparation method thereof. The composite material is prepared from the raw materials: aluminum oxide, lecithin, silicon carbide, calcium sulfate whiskers, zirconium oxide, titanium oxide, zinc oxide, molybdenum, magnesium oxide and 1 to 3 parts of nickel. The preparation method comprises the steps of adding the aluminum oxide into absolute ethyl alcohol to prepare into suspension liquid A; adding the lecithin, the silicon carbide, the calcium sulfate whiskers, the zirconium oxide, the titanium oxide and the zinc oxide into the absolute ethyl alcohol to prepare into suspension liquid B; mixing the suspension liquid A and the suspension liquid B, adding the molybdenum, the magnesium oxide and the nickel, and carrying out ultrasonic dispersion; pouring the mixed suspension liquid into a ball-milling tank; utilizing a sintered carbide ball for mechanically ball-milling, vacuum drying the grinding liquid at 100 DEG C, sieving the obtained composite powder, and performing hot pressed sintering to obtain the aluminum oxide-based nano-composite ceramic mold material. Compared with an aluminum oxide ceramic mold material, the composite ceramic mold material provided by the invention has better integrated mechanical property and excellent antifriction and anti-wear properties.

Description

technical field [0001] The invention relates to a ceramic mold material, in particular to an alumina-based nanocomposite ceramic mold material and a preparation method thereof. Background technique [0002] At present, the mold materials commonly used in production are mainly mold steel, cemented carbide, and cermets. Due to their deformation during use, the dimensional stability and surface quality of the product are reduced, and their hardness and wear resistance are already very low. It is difficult to meet the needs of actual production, so the service life of the mold is low. Starting from improving the service performance and service life of the mould, a new type of nanocomposite ceramic mold is developed by taking advantage of the advantages of high room temperature and high temperature hardness, good wear resistance and high temperature strength of nanocomposite ceramics. Research out the technology of preparing nanocomposite ceramic mold materials with high stren...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/81C04B35/119
CPCC04B35/119C04B35/80C04B2235/3206C04B2235/3232C04B2235/3244C04B2235/3284C04B2235/3418C04B2235/3826C04B2235/404C04B2235/405C04B2235/448C04B2235/96
Inventor 刘浩张君张欢芬
Owner SUZHOU HAOYAN PRECISION MOLD CO LTD
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