Ceramic composite material as well as preparation method and application thereof

A ceramic composite material and raw material technology, applied in the field of material processing, can solve problems such as low efficiency, reduced processing efficiency, and poor temperature resistance

Inactive Publication Date: 2018-01-16
陈凌
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The current cutting tools are generally made of cemented carbide materials. This material is effective in cutting common metal materials, but the efficiency is very low in the processing of superalloys and other superhard materials.
The main reason is that these materials h...

Method used

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  • Ceramic composite material as well as preparation method and application thereof
  • Ceramic composite material as well as preparation method and application thereof
  • Ceramic composite material as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Example 1 proposes a ceramic composite material, including the following raw materials in parts by weight: 80 parts of silicon nitride, 12 parts of yttrium oxide, 3 parts of aluminum oxide, 3 parts of titanium carbide and 0.5 part of ytterbium nitride.

[0026] The preparation method of the ceramic composite material of embodiment 1, comprises the steps:

[0027] (1) The raw materials are mixed and ball milled for 44 hours, then dried and passed through a 200-mesh sieve.

[0028] (2) Preparing the raw material processed in step (1) according to the preset size to prepare a green mold.

[0029] (3) Prepare a graphite mold according to a predetermined size, and then put the green blank mold into the graphite mold.

[0030] (4) Put the graphite mold processed in the step (3) into a hot-press sintering furnace, first raise the temperature to 980°C at a heating rate of 10°C / min, and then increase the temperature at a heating rate of 7°C / min The temperature was raised to 15...

Embodiment 2

[0033] Example 2 proposes a ceramic composite material, including the following raw materials in parts by weight: 90 parts of silicon nitride, 8 parts of yttrium oxide, 5 parts of aluminum oxide, 1 part of titanium carbide and 1.5 parts of ytterbium nitride.

[0034] The preparation method of the ceramic composite material of embodiment 2, comprises the steps:

[0035] (1) The raw materials are mixed and ball milled for 50 hours, then dried and passed through a 300-mesh sieve.

[0036] (2) Preparing the raw material processed in step (1) according to the preset size to prepare a green mold.

[0037] (3) Prepare a graphite mold according to a predetermined size, and then put the green blank mold into the graphite mold.

[0038] (4) Put the graphite mold processed in the step (3) into a hot press sintering furnace, first raise the temperature to 1200°C at a heating rate of 6°C / min, and then at a heating rate of 3°C / min The temperature was raised to 1620°C, and at the same time...

Embodiment 3

[0041] Example 3 proposes a ceramic composite material, including the following raw materials in parts by weight: 85 parts of silicon nitride, 10 parts of yttrium oxide, 4 parts of aluminum oxide, 2 parts of titanium carbide and 1 part of ytterbium nitride.

[0042] The preparation method of the ceramic composite material of embodiment 3, comprises the steps:

[0043] (1) The raw materials are mixed and ball milled for 48 hours, then dried and passed through a 250-mesh sieve.

[0044] (2) Preparing the raw material processed in step (1) according to the preset size to prepare a green mold.

[0045] (3) Prepare a graphite mold according to a predetermined size, and then put the green blank mold into the graphite mold.

[0046] (4) Put the graphite mold processed in the step (3) into a hot press sintering furnace, first raise the temperature to 1000°C at a heating rate of 8°C / min, and then increase the temperature at a heating rate of 5°C / min The temperature was raised to 1600...

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Abstract

The invention relates to a ceramic composite material as well as a preparation method and application thereof. The ceramic composite material comprises the following raw materials in parts by weight:80-90 parts of silicon nitride, 8-12 parts of yttrium oxide, 3-5 parts of aluminum oxide, 1-3 parts of titanium carbide and 0.5-1.5 parts of ytterbium nitride. The ceramic composite material is prepared from a ceramic material with silicon nitride as a main component through hot pressing sintering, the prepared ceramic composite material which is high in hardness and good in temperature resistancecan be adopted to manufacture various cutters, and the properties of the cutters are greatly prior to those of conventional alloy cutters.

Description

technical field [0001] The invention belongs to the technical field of material processing, and in particular relates to a ceramic composite material and its preparation method and application. Background technique [0002] The current cutting tools are generally made of cemented carbide materials. This material is effective in cutting common metal materials, but its efficiency is very low in the processing of superalloys and other superhard materials. Mainly because these materials have poor temperature resistance, only low-speed machine tools can be used to cool the cutter head and reduce the processing line speed to improve the service life of cutting tools, but once the above requirements are met, the processing efficiency will be reduced. Contents of the invention [0003] One object of the present invention is to propose a ceramic composite material. [0004] A ceramic composite material of the present invention comprises the following raw materials in parts by weig...

Claims

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Application Information

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IPC IPC(8): C04B35/584C04B35/622C04B35/645
Inventor 陈凌
Owner 陈凌
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