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Dispersion-strengthened ceramic composite material and preparation method thereof

A ceramic composite material and dispersion strengthening technology, applied in the field of composite materials and engineering ceramic materials, can solve the problems of poor corrosion resistance and wear resistance, increased production cost, easy to block nozzles, etc., and achieve low porosity and comprehensive mechanical properties. Improved, good mechanical properties

Active Publication Date: 2017-10-31
NORTHEASTERN UNIV LIAONING +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] As the key equipment for fluid transportation, centrifugal pumps are mainly made of cast steel, stainless steel, metal-lined rubber and metal-lined ceramics. Although wear-resistant duplex stainless steel has high strength and good plasticity, it is corrosive to solid-liquid during long-term transportation. Due to the poor corrosion resistance and wear resistance of the material in the medium, the loss of the fluid conveying equipment is relatively large, which not only increases the production cost, but also easily creates potential safety hazards
In order to solve this problem, the method of lining rubber or ceramics is often used, but due to the disadvantages of rubber and ceramic materials such as service life, easy falling off and easy clogging of nozzles, it is urgent to develop metals with strong wear resistance, corrosion resistance and high temperature resistance. New matrix composite materials and related preparation technologies

Method used

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  • Dispersion-strengthened ceramic composite material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A dispersion-strengthened ceramic composite material, which is composed of silicon carbide, calcium sulfate whiskers, metal titanium fibers with a passivation film on the surface, and a composite binder. In the ceramic composite material, silicon carbide particles of different shapes , calcium sulfate whiskers, metal titanium fibers and composite binder interweave and distribute; where:

[0052] According to the mass ratio, 1.5mm ± 0.5mm polyhedral silicon carbide particles: 450 μm ± 50 μm polyhedral silicon carbide particles: 15 μm ± 5 μm spherical silicon carbide: 100nm spherical nano-silicon carbide: calcium sulfate whiskers with an aspect ratio of 100 and a diameter of 1 μm: Metal titanium fibers with a passivation film on the surface of a diameter of 8 μm and a length of 1 mm: composite binder = 30:5:20:5:10:5:15;

[0053] Described composite binder is made up of epoxy resin and star-shaped block copolymer, by mass ratio, epoxy resin: star-shaped block copolymer=99...

Embodiment 2

[0065] A dispersion-strengthened ceramic composite material, which is composed of silicon carbide, calcium sulfate whiskers, metal titanium fibers with a passivation film on the surface, and a composite binder. In the ceramic composite material, silicon carbide particles of different shapes , calcium sulfate whiskers, metal titanium fibers and composite binder interweave and distribute; where:

[0066] According to the mass ratio, 2.5mm ± 0.5mm polyhedral silicon carbide particles: 450 μm ± 50 μm polyhedral silicon carbide particles: 15 μm ± 5 μm spherical silicon carbide: 90 nm spherical nano-silicon carbide: calcium sulfate whiskers with an aspect ratio of 90 and a diameter of 1.5 μm : 10 μm in diameter and 1.2 mm in length, titanium metal fibers with a passivation film on the surface: composite binder = 5: 30: 20: 1: 5: 5: 30;

[0067] Described composite binder is made up of epoxy resin and star-shaped block copolymer, by mass ratio, epoxy resin: star-shaped block copolyme...

Embodiment 3

[0079] A dispersion-strengthened ceramic composite material, which is composed of silicon carbide, calcium sulfate whiskers, metal titanium fibers with a passivation film on the surface, and a composite binder. In the ceramic composite material, silicon carbide particles of different shapes , calcium sulfate whiskers, metal titanium fibers and composite binder interweave and distribute; where:

[0080] According to the mass ratio, 2mm ± 0.5mm polyhedral silicon carbide particles: 450 μm ± 50 μm polyhedral silicon carbide particles: 15 μm ± 5 μm spherical silicon carbide: 90nm spherical nano-silicon carbide: calcium sulfate whiskers with an aspect ratio of 110 and a diameter of 0.5 μm: Metal titanium fibers with a passivation film on the surface of a diameter of 7 μm and a length of 2.4 mm: composite binder = 15: 15: 10: 3: 10: 0.5: 25;

[0081] Described composite binder is made up of epoxy resin and star-shaped block copolymer, by mass ratio, epoxy resin: star-shaped block co...

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Abstract

A dispersion-strengthened ceramic composite material and its preparation method, belonging to the field of composite materials and engineering ceramic materials; the composite material is composed of different forms of silicon carbide, calcium sulfate whiskers, metal fibers and composite adhesives. Different forms of carbonization Silicon particles, calcium sulfate whiskers, metal fibers and composite adhesives are interwoven and distributed; preparation method: 1) Mix silicon carbide, calcium sulfate whiskers, metal fibers and composite adhesives evenly under vacuum conditions to prepare Obtain slurry; 2) vibrate and pour the slurry into the mold under vacuum; 3) solidify the mold and the pouring slurry to prepare a dispersion-strengthened ceramic composite material; the present invention effectively solves the problem of highly corrosive solids. The problem of wear and corrosion of pump body materials when liquid media is transported. The prepared composite materials have the characteristics of strong adhesion to the metal matrix, high hardness, wear resistance, corrosion resistance, oxidation resistance and thermal shock resistance; used in chemical industry , pharmaceutical and paper making and other fields.

Description

technical field [0001] The invention belongs to the field of composite materials and engineering ceramic materials, and in particular relates to a dispersion-strengthened ceramic composite material and a preparation method thereof. Background technique [0002] As the key equipment for fluid transportation, centrifugal pumps are mainly made of cast steel, stainless steel, metal-lined rubber and metal-lined ceramics. Although wear-resistant duplex stainless steel has high strength and good plasticity, it is corrosive to solid-liquid during long-term transportation. Due to the poor corrosion resistance and wear resistance of the material in the medium, the loss of the fluid conveying equipment is relatively large, which not only increases the production cost, but also easily causes safety hazards. In order to solve this problem, the method of lining rubber or ceramics is often used, but due to the disadvantages of rubber and ceramic materials such as service life, easy falling...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/81C04B35/565C04B35/76
CPCC04B35/565C04B35/76C04B2235/96C04B2235/48C04B2235/5276C04B2235/5454C04B2235/5436C04B2235/5427
Inventor 姜茂发宋景尧史培阳范汇超陆建民
Owner NORTHEASTERN UNIV LIAONING
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