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Preparation method of metal ceramic

A cermet and bonded metal technology, which is applied in the field of ceramic materials, can solve the problems of limited performance and few types of metal elements, and achieve the effects of low oxygen content, excellent performance and wide application range

Active Publication Date: 2014-04-30
XIAMEN TUNGSTEN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few types of metal elements, and the performance in the field of cutting processing is limited.

Method used

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  • Preparation method of metal ceramic
  • Preparation method of metal ceramic
  • Preparation method of metal ceramic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The weight percentage of each component of the cermet: 43%Ti+4.0%W+6%Ta+20%Mo+5%Co+9%Ni+10.5%C+2.5%N,

[0037] (1) Make a mixture with the above-mentioned weight percentage (Ti, W, Ta, Mo) (C, N) multi-element compound carbonitride powder and bonding metal Co, Ni powder;

[0038] (2) The above-mentioned mixture is wet-milled for 60-90 hours, dried under vacuum at 100-150°C, infiltrated with 3 to 5% of the weight of the mixture of paraffin wax, and molded at a pressure of 1 to 2.2 tons per square centimeter to obtain a compressed molding material ;

[0039] (3) The press-formed material is dewaxed at 300-500°C and sintered at 1430-1480°C to prepare a finished product.

[0040] The performance difference between the existing method and the alloy prepared in Example 1 was compared. See Table 1.

[0041] Table 1 Existing method and preparation method of Example 1 and alloy properties

[0042]

[0043] In the above table, X=0.2~0.8.

Embodiment 2

[0045] The weight percentage of each component of the cermet: 34%Ti+17.0%W+6%Ta+14%Mo+1%Cr+5%Co+11%Ni+9.5%C+2.5%N.

[0046] (1) The above weight percentages of (Ti, W, Ta, Mo, Cr) (C, N) multi-element compound carbonitrides and bonding metals Co and Ni are combined to make a mixture;

[0047] (2) The above-mentioned mixture is wet-milled for 60-90 hours, dried under vacuum at 100-150°C, infiltrated with 3 to 5% of the weight of the mixture of paraffin wax, and molded at a pressure of 1 to 2.2 tons per square centimeter to obtain a compressed molding material ;

[0048] (3) The press-formed material is dewaxed at 300-500°C and sintered at 1430-1480°C to prepare a finished product.

[0049] The performance difference between the existing method and the alloy prepared in Example 2 is compared. See Table 2.

[0050] Table 2 Existing methods and preparation methods and alloy properties of Example 2

[0051]

[0052] In the above table, X=0.2~0.8.

Embodiment 3

[0054] The weight percentage of each component of the cermet: 44%Ti+4.0%W+2%Ta+2%Nb+12%Mo+1%V+2%Zr+8%Co+8%Ni+12.5%C+ 4.5% N.

[0055] (1) The above weight percentage (Ti, W, Ta, Mo, Nb, V, Zr) (C, N) multi-element compound carbonitride and bonding metal Co, Ni are used to make a mixture;

[0056] (2) The above-mentioned mixture is wet-milled for 60-90 hours, dried under vacuum at 100-150°C, infiltrated with 3 to 5% of the weight of the mixture of paraffin wax, and molded at a pressure of 1 to 2.2 tons per square centimeter to obtain a compressed molding material ;

[0057] (3) The press-formed material is dewaxed at 300-500°C and sintered at 1430-1480°C to prepare a finished product.

[0058] The performance difference between the existing method and the alloy prepared in Example 3 is compared. See Table 3

[0059] Table 3 Existing method and preparation method and alloy properties of Example 3

[0060]

[0061] In the above table, X=0.2~0.8.

[0062] In the above embodiments, the bond...

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Abstract

The invention discloses a metal ceramic and a preparation method thereof. The metal ceramic comprises the following components in percentage by weight: 30 to 50 weight percent of Ti, 3 to 30 weight percent of W, 1 to 15 weight percent of Ta, 1 to 25 weight percent of Mo, 0 to 5 weight percent of Cr, 0 to 5 weight percent of V, 0 to 10 weight percent of Nb, 0 to 5 weight percent of Zr, 0 to 24 weight percent of Ni, 0 to 24 weight percent of Co, 0 to 10 weight percent of Fe, and the balance of C and N. (Ti, W, Ta, Mo and Me) (C and N) multi-element duplex carbonitrides are used as raw materials, and the preparation method comprises the following steps of: adding binding metal, performing wet milling, drying, doping a molding agent, and performing compression molding; and removing the molding agent and sintering and preparing the metal ceramic, wherein Me represents one or more of Cr, V, Nb, Zr and Mn. Compared with the prior art, the metal ceramic prepared by the preparation method has the advantages of low oxygen content, good performance and wide application range.

Description

Technical field [0001] The invention relates to the field of ceramic materials, in particular to a metal ceramic and a preparation method thereof. Background technique [0002] Cermet consists of two parts, the hard phase and the binder. The hard phase is used to improve the wear resistance and hardness, and the binder makes the hard phase tightly combined and acts as a bridge. Therefore, the combination of hard phase and binder is one of the key factors of alloy performance. [0003] The binder has good wettability to the hard phase, and the two are firmly combined. In the development process of cermet, it has experienced a leap, namely the introduction of Mo or Mo 2 C can improve the wettability of the binder Ni and the hard phase TiC or TiCN. But the improvement is not enough. In addition to the introduction of Mo, the introduction of other metal elements can further improve their wettability and increase the strength of the alloy. During the sintering process, the presence ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C29/04C22C1/05
Inventor 吴冲浒何旭东文晓肖满斗程登峰马丽丽吴飞龙肖伟
Owner XIAMEN TUNGSTEN