Metal ceramic composite material and preparation method thereof

A composite material and cermet technology, applied in the field of composite materials, can solve problems such as unsatisfactory, Rockwell hardness and flexural strength need to be further improved, and achieve excellent performance, suitable for large-scale popularization and application, and excellent wear resistance. and high temperature resistance

Inactive Publication Date: 2015-03-04
SUZHOU NETABHAPE COMPOSITE MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the improvement of the performance of cermets in my country is still not ideal, and the Rockwell hardness and bending strength of existing cermets still need to be further improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Metal-ceramic composite materials, including the following raw materials in parts by mass: 20 parts of nanomolybdenum carbide, 5 parts of cobalt, 8 parts of chromium, 5 parts of niobium carbide, 1 part of zirconia, 3 parts of silicon carbide, 4 parts of copper, and cerium oxide 10 parts, 1 part alumina, 1 part titanium powder.

[0023] The preparation method of the cermet composite material comprises the following steps: according to the mass ratio, after mixing nanometer molybdenum carbide, cobalt, chromium, niobium carbide, zirconia, silicon carbide, copper, cerium oxide, aluminum oxide and titanium powder Grinding for 1 hour, drying the obtained material at 100°C, pressing at 500MPa, sintering at 1230°C for 1 hour in a nitrogen atmosphere, and cooling naturally to obtain the metal-ceramic composite material.

[0024]

Embodiment 2

[0026] Metal-ceramic composite materials, including the following raw materials in parts by mass: 30 parts of nano-molybdenum carbide, 15 parts of cobalt, 17 parts of chromium, 18 parts of niobium carbide, 3 parts of zirconia, 13 parts of silicon carbide, 9 parts of copper, and cerium oxide 12 parts, 3 parts of alumina, 5 parts of titanium powder.

[0027] The preparation method of the cermet composite material comprises the following steps: according to the mass ratio, after mixing nanometer molybdenum carbide, cobalt, chromium, niobium carbide, zirconia, silicon carbide, copper, cerium oxide, aluminum oxide and titanium powder Grinding for 2 hours, drying the obtained material at 200°C, pressing at 600MPa, sintering at 1280°C for 2 hours in a nitrogen atmosphere, and cooling naturally to obtain the metal-ceramic composite material.

[0028]

Embodiment 3

[0030] Metal-ceramic composite materials, including the following raw materials in parts by mass: 22 parts of nanomolybdenum carbide, 6 parts of cobalt, 9 parts of chromium, 6 parts of niobium carbide, 1 part of zirconia, 4 parts of silicon carbide, 5 parts of copper, and cerium oxide 11 parts, 1 part alumina, 2 parts titanium powder.

[0031] The preparation method of the cermet composite material comprises the following steps: according to the mass ratio, after mixing nanometer molybdenum carbide, cobalt, chromium, niobium carbide, zirconia, silicon carbide, copper, cerium oxide, aluminum oxide and titanium powder Grind for 1.5 hours, dry the obtained material at 150°C, press at 550MPa, sinter at 1250°C for 1.5h in a nitrogen atmosphere, and cool naturally to obtain the metal-ceramic composite material.

[0032]

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Abstract

The invention relates to a metal ceramic composite material and a preparation method thereof, and belongs to the field of composite materials. The metal ceramic composite material comprises the following raw materials in part by mass: 20-30 parts of nanometer molybdenum carbide, 5-15 parts of cobalt, 8-17 parts of chromium, 5-18 parts of niobium carbide, 1-3 parts of zirconium oxide, 3-13 parts of silicon carbide, 4-9 parts of copper, 10-12 parts of cerium oxide, 1-3 parts of aluminium oxide, and 1-5 parts of titanium powder. The metal ceramic composite material has the advantages that the performance is excellent, the bending strength can reach up to 2500 MPa, and the Rockwell hardness can reach 93; the composite material further has excellent wear resistance and high temperature resistance; the preparation method is simple, feasible, and suitable for large-range popularization and application.

Description

technical field [0001] The invention belongs to the field of composite materials, and in particular relates to a metal-ceramic composite material and a preparation method thereof. Background technique [0002] Cermet is a composite material composed of ceramic hard phase and metal or alloy binder phase. Cermet not only maintains the characteristics of high strength, high hardness, wear resistance, high temperature resistance, oxidation resistance and chemical stability of ceramics, but also Has good metal toughness and plasticity. [0003] 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; the third generation of cermets introduces nitrides into the hard phase of the alloy and changes the single phase into a composite phase. The binder phase is also improved by adding Co phase and other elements. Anothe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/05C22C29/02
Inventor 刘莉王爽邱晶刘晓东黄明明
Owner SUZHOU NETABHAPE COMPOSITE MATERIALS
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