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Aluminum oxide-titanium carbide nitride-titanium nickel composite material and preparation method thereof

A technology of titanium carbonitride and composite materials, which is applied in the field of ceramic composite materials and its preparation, can solve problems such as high brittleness, low tensile strength, and poor impact resistance, and reduce sintering temperature, reduce agglomeration, increase density and The effect of mechanical properties

Inactive Publication Date: 2008-08-13
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Alumina ceramic materials have the characteristics of high melting point, high compressive strength and corrosion resistance, but due to Al 2 o 3 Ceramic materials are brittle, have low tensile strength and poor impact resistance, so as tool materials, in order to be widely used in practice, the mechanical properties of the material must be improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1 (Al 2 o 3 -5vol%TiC 0.5 N 0.5 )-1vol%(Ti+Ni) composites and their properties

[0018] in Al 2 o 3 Powder (particle size d 50 0.1 μm, purity > 99.90%), adding TiC with a volume percentage of 5 0.5 N 0.5 Powder (particle size d 50 0.1 μm, purity > 99.90%), using absolute ethanol as the ball milling medium, alumina balls as the balls, ball milling for 12 hours, and then drying in an oven at 60°C for 24 hours to obtain Al 2 o 3 -5vol%TiC 0.5 N 0.5 Mix powder. Mix Ti powder and Ni powder in an atomic ratio of 1:1, use absolute ethanol as the ball milling medium, and stainless steel balls as the balls, mill for 12 hours, and then put them in a vacuum oven at 60°C for 48 hours to dry at a vacuum degree of 1 ×10 -1 MPa to obtain Ti-Ni mixed powder. in the mixed Al 2 o 3 -5vol%TiC 0.5 N 0.5 Add the mixed Ti-Ni mixed powder with a volume percentage of 1 to the mixed powder, use absolute ethanol as the ball milling medium, and stainless steel balls ...

Embodiment 2

[0020] The composition of the alumina-based composite material in this embodiment is (Al 2 o 3 -25vol%TiC 0.3 N 0.7 )-8vol% (Ti+Ni) in Al 2 o 3 Powder (particle size d 50 0.5 μm, purity > 99.9%), adding TiC with a volume percentage of 25 0.3 N 0.7 Powder (particle size d 50 0.3 μm, purity > 99.9%), using deionized water as the ball milling medium, alumina balls as the balls, ball milling for 20 hours, and then drying in an oven at 120°C for 48 hours to obtain Al 2 o 3 -5vol%TiC 0.5 N 0.5 Mix powder. Ti powder (particle size d 50 0.5μm, purity>99.9%) and Ni powder (particle size d 50 0.5 μm, purity> 99.9%) were mixed according to the ratio of atomic ratio 1:2, with absolute ethanol as the ball milling medium, stainless steel balls as the balls, ball milled for 24 hours, then put into a 60 ℃ vacuum oven to dry for 24 hours, vacuum The degree is 1×10 -1 MPa to obtain Ti-Ni mixed powder. in the mixed Al 2 o 3 -25vol%TiC 0.5 N 0.5Add the mixed Ti-Ni mixed powder...

Embodiment 3

[0022] The composition of the alumina-based composite material in this embodiment is (Al 2 o 3 -35vol%TiC 0.3 N 0.7 )-12vol% (Ti+Ni) in Al 2 o 3 Powder (particle size d 50 3 μm, purity > 99.9%) was added TiC with a volume percentage of 35 0.5 N 0.5 Powder (particle size d 50 3μm, purity>99.9%), Al 2 o 3 -35vol%TiC 0.3 N 0.7 The powder mix was prepared as described in Example 1. Ti powder (particle size d 50 2μm, purity>99.9%) and Ni powder (particle size d 50 2 μm, purity>99.9%) were mixed at an atomic ratio of 1:4, and the preparation of the mixed powder was as described in Example 1. in the mixed Al 2 o 3 -35vol%TiC 0.3 N 0.7 Add the mixed Ti-Ni mixed powder with a volume percentage of 12 to the mixed powder, use absolute ethanol as the ball milling medium, and stainless steel balls as the balls, ball mill for 18 hours, and then put it in a vacuum oven at 60°C for 24 hours and dry it under vacuum. The degree is 1×10 -1 MPa. The mixed powder is hot-presse...

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PUM

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Abstract

The present invention relates to an aluminum oxide-carbon titanium nitride-titanium-nickle composite material and the preparing method thereof, the volume percentage of the composite material combination is as follows: Al2O3:60-94, Ti(C, N): 5-35, Ti+Ni: 1-12; the preparation technique process comprises the following two steps of: a first step of raw material mixing and drying: (1) mixing the raw material Al2O3 powder, TiCN powder, ball-grinding medium and surfactant, ball grinding and drying; (2) mixing the raw material Ti powder, Ni powder and ball-grinding medium, and ball-grinding, the ratio of titanium and nickel atom is 1:1-1:4; (3) adding ball-grinding medium into the powder which is mixed and dried in the procedure (1) and (2), ball-grinding and drying, the adding amount of Ti and Ni powder is 1-12vol%, the second step is powder molding and sintering: the mixed powder processed in the procedure (3) is added into the hot pressing stove and is hot pressed for molding in the argon atmosphere, temperature of 1400-1700DGE C and pressure of 25-35MPa. The material of the invention has the following advantages: evident increased material combined properties of hardness, strength and toughness, and the material is more suitable for the cutter material used in the mechanical industry.

Description

technical field [0001] The invention relates to a ceramic composite material and a preparation method thereof, in particular to an aluminum oxide-titanium carbonitride-titanium nickel composite material and a preparation method thereof. Background technique [0002] With the development of high and new technologies, the machining industry has put forward more stringent and demanding requirements for tool materials. For example, processing materials with higher hardness, higher cutting efficiency, finishing and realizing unmanned operation, etc., this requires improving the strength, toughness, wear resistance and thermal shock resistance of tool materials. Alumina ceramic materials have the characteristics of high melting point, high compressive strength and corrosion resistance, but due to Al 2 o 3 Ceramic materials are brittle, have low tensile strength and poor impact resistance, so as tool materials, in order to be widely used in practice, the mechanical properties of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10C04B35/622
Inventor 修稚萌孙旭东李晓东霍地李继光李乾王亚蓉茹红强左良
Owner NORTHEASTERN UNIV
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