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Micro-nano composite ceramic die material and preparation method thereof

A composite ceramic mold, micro-nano technology, used in ceramic molding machines, manufacturing tools, etc., can solve problems such as poor heat resistance, wear resistance, toughness, etc., to improve strength, improve mechanical properties and performance, improve The effect of the dispersion effect

Inactive Publication Date: 2008-04-23
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] From the existing research on ceramic molds, it can be seen that the excellent properties of ceramic materials such as high hardness, heat resistance, and wear resistance are far from being brought into play due to their poor toughness, and can only be used with no or little impact. On the mold of load and tensile stress, the forming equipment is mostly static load equipment such as extrusion machine or hydraulic press, and the shape of the mold is generally relatively simple, and the material is limited to ZTA, TZP, Sialon ceramics, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Micro-nano composite ceramic mold material, the volume percentage of each component is: α-Al 2 o 3 79.5%, Ti(C,N) 15%, Mo2.5%, Ni2.5%, MgO0.5%. The preparation method is as follows:

[0029] Will Al 2 o 3 , Ti(C,N) single-phase powder, polyethylene glycol with a molecular weight of 2000 as a dispersant, and α-Al 2 o 3 Or the mass of Ti(C, N) as the base number, the addition amount of dispersant is 1wt% respectively, and the appropriate amount of absolute ethanol is used as the dispersion medium, and the corresponding α-Al 2 o 3 Or Ti(C,N) single-phase suspension, fully stirred with a stirrer, ultrasonically dispersed, respectively, with HCl and NH 4 OH to adjust the pH of the suspension to 3.0. Then the resulting α-Al 2 o 3 It is mixed with the suspension of Ti(C, N) powders to obtain a multi-phase suspension. After the mixed multiphase suspension was ultrasonically dispersed, its pH value was adjusted to 3.0 again. Then add sintering aids such as Mo, Ni and...

Embodiment 2

[0031] Micro-nano composite ceramic mold material, the volume percentage of each component is: α-Al 2 o 3 84.3%, Ti(C,N) 10%, Mo 1.5%, Ni 3.5%, MgO 0.7%. The preparation method is as follows:

[0032] Will Al 2 o 3 , Ti(C,N) single-phase powder, polyethylene glycol with a molecular weight of 2000 as a dispersant, and α-Al 2 o 3 Or the mass of Ti(C, N) as the base number, the addition amount of dispersant is 1.5wt% respectively, and the appropriate amount of absolute ethanol is used as the dispersion medium, and the corresponding α-Al 2 o 3 Or Ti(C,N) single-phase suspension, fully stirred with a stirrer, ultrasonically dispersed, respectively, with HCl and NH 4 OH to adjust the pH of the suspension to 2.9. Then α-Al 2 o 3 It is mixed with the suspension of Ti(C, N) powders to obtain a multi-phase suspension. After the mixed multiphase suspension was ultrasonically dispersed, its pH value was adjusted to 2.9 again. Then add sintering aids such as Mo, Ni and MgO. Af...

Embodiment 3

[0034] Micro-nano composite ceramic mold material, the volume percentage of each component is: α-Al 2 o 3 74.1%, Ti(C,N) 20%, Mo4%, Ni1.5%, MgO0.4%. The preparation method is as follows:

[0035] Will Al 2 o 3 , Ti(C,N) single-phase powder, polyethylene glycol with a molecular weight of 2000 as a dispersant, and α-Al 2 o 3 Or the mass of Ti(C, N) as the base number, the addition amount of dispersant is 0.8wt% respectively, and the appropriate amount of absolute ethanol is used as the dispersion medium, and the corresponding α-Al 2 o 3 Or Ti(C,N) single-phase suspension, fully stirred with a stirrer, ultrasonically dispersed, with HCl and NH 4 OH to adjust the pH of the suspension to 3.2. Then α-Al 2 o 3 It is mixed with the suspension of Ti(C, N) powders to obtain a multi-phase suspension. After the mixed multiphase suspension was ultrasonically dispersed, its pH value was adjusted to 3.2 again. Then add sintering aids such as Mo, Ni and MgO. After mixing the raw ...

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Abstract

This invention relates to the micron nanometer composite ceramic die material, and its preparation method. In this invention, micron grade Al2O3 ceramic is used as basic material, added are nanometer grade Ti (C,N) ceramic hard granules as dispersing material, Mo, Ni and MgO as agglutinant assistant. The preparation steps are: the powder of Al2O3 and Ti(C,N) are dispersed in the unified dispersing medium, then being proceeded the ball-milling, drying and hot-pressing sintering. This invention method benefits the dispersing effect of the powder with advantages of: simple operation and low cost. This product can be used for making compressing die or drawing die and the like with its comprehensive mechanical properties and abradability being better than that of prior art ceramic die material.

Description

technical field [0001] The invention relates to a ceramic mold material and a preparation method thereof, in particular to a nanometer titanium carbonitride (Ti(C 7 N 3 )) Toughened and reinforced micron alumina (Al 2 o 3 ) micro-nano composite ceramic mold material and its preparation method. Background technique [0002] Ceramic materials have excellent thermal stability and wear resistance, and are ideal materials for making forming molds. They have great development prospects, but their toughness is poor, so they have not been widely used in the mold industry. Ceramic materials are expensive and lack experience in production. However, with the development of science and technology, the improvement of manufacturing technology and the increase of consumption, the cost will definitely decrease, and the application will become more and more extensive. From a long-term point of view, research and development of advanced ceramic mold materials should be started. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/117C04B35/622B28B3/00
Inventor 许崇海肖光春张荣波冯曰美
Owner QILU UNIV OF TECH
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