Composite hard alloy material and preparing method thereof

A cemented carbide and nano-titanium carbide technology, applied in the field of composite materials, can solve the problems of low strength and toughness, limited application, etc., and achieve the effects of good thermal shock performance, inhibiting grain growth, and purifying grain boundaries.

Inactive Publication Date: 2015-08-12
梅照付
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with WC-Co cemented carbide, the lower strength and toughness of Ti (C, N)-based cermets greatly limits its application as tool materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0016] The composite cemented carbide material is prepared from the following components in parts by weight: 35 parts of nano-titanium carbide, 15 parts of nano-titanium nitride, 9 parts of tungsten carbide, 5 parts of niobium carbide, 3 parts of silicon carbide, 1 part of yttrium oxide, 3 parts of aluminum, 5 parts of titanium powder, 2 parts of tantalum carbide, 2 parts of zirconium carbide, 13 parts of cobalt powder, 0.5 parts of silicon powder, 2 parts of nickel powder, 6 parts of boron carbide, of which tungsten carbide, nickel powder, aluminum carbide, The particle size of nano titanium carbide and yttrium oxide is 0.8μm, the particle size of cobalt powder, silicon powder, tantalum carbide and silicon carbide is 1.0μm, in addition, tungsten carbide, cobalt powder, nickel powder, silicon powder, aluminum carbide, tantalum carbide , Nano titanium carbide, silicon carbide and yttrium oxide are all equal to 99.5% in purity.

[0017] The above weighed nano-titanium carbide, n...

specific Embodiment 2

[0019] The composite cemented carbide material is prepared from the following components in parts by weight: 40 parts of nano-titanium carbide, 5 parts of nano-titanium nitride, 7 parts of tungsten carbide, 8 parts of niobium carbide, 7 parts of silicon carbide, 3 parts of yttrium oxide, 1 part of aluminum, 1 part of titanium powder, 10 parts of tantalum carbide, 5 parts of zirconium carbide, 10 parts of cobalt powder, 1.5 parts of silicon powder, 1 part of nickel powder, 2 parts of boron carbide, of which tungsten carbide, nickel powder, aluminum carbide, The particle size of nano titanium carbide and yttrium oxide is 1.2μm, the particle size of cobalt powder, silicon powder, tantalum carbide and silicon carbide is 0.8μm, in addition, tungsten carbide, cobalt powder, nickel powder, silicon powder, aluminum carbide, tantalum carbide , Nano titanium carbide, silicon carbide and yttrium oxide are all equal to 99.7% in purity.

[0020] The above weighed nano-titanium carbide, nan...

specific Embodiment 3

[0022] The composite cemented carbide material is prepared from the following components in parts by weight: 38 parts of nano-titanium carbide, 10 parts of nano-titanium nitride, 8 parts of tungsten carbide, 6 parts of niobium carbide, 6 parts of silicon carbide, 2.5 parts of yttrium oxide, 2 parts of aluminum, 4 parts of titanium powder, 5 parts of tantalum carbide, 4 parts of zirconium carbide, 11 parts of cobalt powder, 1 part of silicon powder, 1.5 parts of nickel powder, 4 parts of boron carbide, of which tungsten carbide, nickel powder, aluminum carbide, The particle size of nano titanium carbide and yttrium oxide is 0.8μm, the particle size of cobalt powder, silicon powder, tantalum carbide and silicon carbide is 0.8μm, in addition, tungsten carbide, cobalt powder, nickel powder, silicon powder, aluminum carbide, tantalum carbide , Nano titanium carbide, silicon carbide and yttrium oxide are all equal to 99.3% in purity.

[0023] The above weighed nano-titanium carbide,...

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Abstract

The invention discloses a composite hard alloy material and relates to the field of composite materials. The composite hard alloy material comprises, by weight, 35 to 40 parts of nano titanium carbide, 5 to 15 parts of nano titanium nitride, 7 to 9 parts of tungsten carbide, 5 to 8 parts of niobium carbide, 3 to 7 parts of silicon carbide, 1 to 3 parts of yttrium oxide, 1 to 3 parts of aluminum carbide, 1 to 5 pats of titanium powder, 2 to 10 parts of tantalum carbide, 2 to 5 parts of zirconium carbide, 10 to 13 parts of cobalt powder, 0.5 to 1.5 parts of silicon powder, 1 to 2 parts of nickel powder, and 2 to 6 parts of boron carbide. By adding rare-earth elements more active than other elements in the hard alloy and prone to combination with impurities such as oxygen and sulfur in the hard alloy, the crystal boundary is purified, and the defects are eliminated; the prepared alloy has high strength, toughness, wear resistance and good thermal impact performance; the preparing method is suitable for preparation of composite hard alloy materials.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a composite hard alloy material and a preparation method thereof. Background technique [0002] Cemented carbide materials are used in processing tools in the manufacturing industry. They have high hardness, good high temperature performance and excellent wear resistance, and are known as industrial teeth. [0003] Tungsten carbide-based cemented carbide is widely used as cutting tools, mining tools and wear-resistant parts due to its high strength, high hardness, high wear resistance and high red hardness. From the comprehensive requirements of impact toughness and wear resistance , low-cobalt coarse grain alloy structure can meet this requirement. [0004] Cermets have gone through three generations so far. The first generation was during the "World War II", Germany produced cermets with Ni bonded TiC; The wettability of other carbides improves the toughness of the material...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C29/02C22C1/05
Inventor 梅照付
Owner 梅照付
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