Boron-based metal ceramic material and preparation method thereof

A cermet and weight ratio technology, applied in the field of ceramic materials, can solve the problems of low mechanical strength and achieve the effect of improving strength and service time

Active Publication Date: 2015-05-20
WUJIANG HUACHENG COMPOSITE MATERIAL SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the mechanical strength of boron-based cermet materials is low, and there is still room for improvement.

Method used

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  • Boron-based metal ceramic material and preparation method thereof
  • Boron-based metal ceramic material and preparation method thereof
  • Boron-based metal ceramic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Take molybdenum boride 35Kg, zirconium boride 24Kg, titanium boride 13Kg, tungsten powder 16Kg, nickel oxide 8Kg, manganese silicide 12Kg, chromium powder 13Kg by weight respectively, and above-mentioned each material is mixed to uniform; ( 2) Perform ball milling on the above-mentioned homogeneously mixed mixed materials, put the above-mentioned materials into a ball mill jar, add grinding balls, and carry out ball milling. The ball milling time is 5 hours; (3) After ball milling, press the cermet material in a pressing mold , the pressing pressure is 160MPa, and the pressing time is 5h; (4) high-temperature sintering, the sintering temperature is 940°C, and the sintering time is 3h; it is lowered to room temperature, and the boron-based cermet material is prepared.

Embodiment 2

[0023] (1) Take molybdenum boride 16Kg, zirconium boride 36Kg, titanium boride 7Kg, tungsten powder 6Kg, nickel oxide 15Kg, manganese silicide 5Kg, chromium powder 7Kg by weight respectively, and above-mentioned each material is mixed to uniform; ( 2) The above-mentioned uniformly mixed mixed materials are then ball-milled, and the above-mentioned materials are put into a ball-milling tank, and grinding balls are added to carry out ball-milling. The ball-milling time is 12 hours; (3) After ball-milling, press the cermet material in a pressing mold , the pressing pressure is 130MPa, and the pressing time is 8h; (4) high-temperature sintering, the sintering temperature is 910°C, and the sintering time is 7h; when it is lowered to room temperature, it is the prepared boron-based cermet material.

Embodiment 3

[0025] (1) Take molybdenum boride 30Kg, zirconium boride 28Kg, titanium boride 8Kg, tungsten powder 13Kg, nickel oxide 10Kg, manganese silicide 10Kg, chromium powder 11Kg by weight respectively, and above-mentioned each material is mixed to uniform; ( 2) Perform ball milling on the above-mentioned homogeneously mixed mixed materials, put the above-mentioned materials into a ball mill jar, add grinding balls, and carry out ball milling. The ball milling time is 5 hours; (3) After ball milling, press the cermet material in a pressing mold , the pressing pressure is 160MPa, and the pressing time is 5h; (4) high-temperature sintering, the sintering temperature is 940°C, and the sintering time is 3h; it is lowered to room temperature, and the boron-based cermet material is prepared.

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Abstract

The invention discloses a boron-based metal ceramic material and a preparation method thereof. The metal ceramic material comprises the following components in parts by weight: 16-35 parts of molybdenum boride, 24-36 parts of zirconium boride, 7-13 parts of titanium boride, 6-16 parts of tungsten powder, 8-15 parts of nickel oxide, 5-12 parts of manganese silicide and 7-13 parts of chromium powder. The preparation method comprises the following steps: (1) respectively weighing 16-35 parts of molybdenum boride, 24-36 parts of zirconium boride, 7-13 parts of titanium boride, 6-16 parts of tungsten powder, 8-15 parts of nickel oxide, 5-12 parts of manganese silicide and 7-13 parts of chromium powder according to weights, and mixing uniformly; (2) then performing ball milling on mixed materials which are uniformly mixed; (3) pressing a metal ceramic material in a pressing mold after ball milling; and (4) then performing high-temperature sintering under the conditions that the sintering temperature is 910-940 DEG C and the sintering time is 3-7 hours, and cooling to room temperature to prepare the boron-based metal ceramic material.

Description

technical field [0001] The invention belongs to the field of ceramic materials, and relates to a ceramic material and a preparation method thereof, in particular to a boron-based cermet material and a preparation method thereof. Background technique [0002] Cermet has the advantages of both metal and ceramics. It has low density, high hardness, wear resistance, good thermal conductivity, and will not be brittle due to sudden cooling or heat. In addition, coating a layer of ceramic coating with good air tightness, high melting point and poor heat transfer performance on the metal surface can also prevent the metal or alloy from being oxidized or corroded at high temperature. Cermet not only has the toughness, high thermal conductivity and good thermal stability of metal, but also has the characteristics of high temperature resistance, corrosion resistance and wear resistance of ceramics. Cermets are widely used in rockets, missiles, shells of supersonic aircraft, flame vent...

Claims

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Application Information

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IPC IPC(8): C22C29/14C22C1/05
CPCC22C1/051C22C29/14
Inventor 费金华
Owner WUJIANG HUACHENG COMPOSITE MATERIAL SCI & TECH
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