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Ceramic column array reinforced metal based composite material or part and preparation method thereof

A technology of composite materials and ceramic columns, which is applied in heat exchange equipment, rotors, cylinders, etc., can solve the problems of complex process, reinforcement phase shedding, and difficulty in achieving a high volume fraction, and achieve simple preparation process, improved wear resistance, The effect of improving reliability

Inactive Publication Date: 2012-07-18
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ceramic particles, fibers and whisker reinforcement phases are the most common reinforcements, but it is difficult to achieve a high volume fraction in the matrix, and form a discontinuous interface with metal composites, which is easy to cause the reinforcement phase to fall off during use
Three-dimensional network ceramics reinforced metal matrix composites are research hotspots in recent years. However, due to the complicated preparation process of network ceramics, it is difficult to realize the preparation of large samples.
[0003] Chinese patent CN101912957A "Network interpenetrating ceramic-metal composite material and its preparation method" relates to network interpenetrating ceramic-reinforced metal matrix composite materials, but its ceramics only refer to SiC ceramic supports, and the ceramics have not undergone any surface treatment
Chinese Patent CN101463182A " A composite material with ultrafine piezoelectric ceramic array structure and its preparation method The concept of ceramic array is also mentioned in ", but the array of this patent belongs to the microscopic category and is used to prepare functional materials, which is different from the preparation of structural materials by macroscopic ceramic arrays in this patent.

Method used

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  • Ceramic column array reinforced metal based composite material or part and preparation method thereof
  • Ceramic column array reinforced metal based composite material or part and preparation method thereof
  • Ceramic column array reinforced metal based composite material or part and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Al 2 o 3 Preparation method of ceramic pillar array integrally reinforced Al-based composite material

[0027] Step 1: Pretreatment of Ceramic Columns: First, the dimensions are Al 2 o 3 Clean the ceramic column, and then use Mo, MnO, Al with a mass ratio of 70:12:10.5:7.5 and a mass ratio of 70:12:10.5:7.5 for the mixed powder that has been ball-milled. 2 o 3 and SiO 2 Metallization mixed powder, ethylene oxalate and collodion solution in the ratio of 5g: 6ml: 5ml prepared Mo-Mn metallization paste coated on the cleaned Al 2 o 3 On the surface of the ceramic column, after drying, place it in a hydrogen furnace at 1450°C, keep it warm for 50 minutes for metallization, then perform electroplating or electroless plating of 5-10μm Ni, and finally heat it in a vacuum furnace at 1000°C for 60 minutes for sintering Ni treatment .

[0028] Step 2: Fixing of the ceramic array: metallized Al 2 o 3 The ceramic columns are arranged regularly according to the center spa...

Embodiment 2

[0031] Al 2 o 3 Preparation method of ceramic pillar array integrally reinforced Al-based composite material

[0032] Step 1: Pretreatment of Ceramic Columns: First, the dimensions are Al 2 o 3 The ceramic column was cleaned, and then the ceramic column was buried in NiSO with a mass ratio of 1:1 4 ·6H 2 O and Na 2 SO 4 mixed salt, and then heated to 900 ° C for 60 minutes to make NiSO 4 Melt and decompose, then cool, and then boil to wash off the salt on the surface of the ceramic.

[0033] Step 2: Fixation of the array: the pretreated Al 2 o 3 The ceramic pillars are alternately arranged with a center distance of 10 mm, and are directly inserted and fixed at the bottom of the sand mold.

[0034] Step 3: Metal casting: At a pouring temperature of 780 ° C, the molten Al alloy (brand ZL104) is poured into a preheated metal mold with a ceramic column array by using a negative pressure casting method, and the ceramic array and Al Alloy composite as a whole.

Embodiment 3

[0036] Al 2 o 3 , ZrO 2 and SiO 2 Preparation method of ceramic pillar array integrally reinforced Mg-based composite material

[0037] Step 1: Pretreatment of Ceramic Columns: First, the dimensions are Al 2 o 3 , ZrO and SiO 2 The ceramic column is cleaned, and then the ball-milled TiH with a median diameter of 2.785 microns is used 2 Powder, ethylene oxalate and collodion solution in the ratio of 5g: 4ml: 4ml prepared TiH 2 The ointment was applied to the surfaces of the three kinds of ceramic columns after cleaning, and after drying, they were placed in a vacuum furnace at 1000°C and kept warm for 30 minutes.

[0038] Step 2: Fixation of the array: the pretreated Al 2 o 3 , ZrO 2 and SiO 2 The ceramic pillars are alternately arranged with a center distance of 10 mm, and are directly inserted and fixed at the bottom of the sand mold.

[0039] (3) Metal casting: At a pouring temperature of about 700 ° C, the molten Mg alloy (brand AZ91D) is poured into a preheat...

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Abstract

The invention discloses a ceramic column array reinforced metal based composite material or part and a preparation method thereof. The ceramic column array reinforced metal based composite material or part comprises a metal base body and ceramic columns regularly arranged in the metal base body, wherein the ceramic columns are integrally or locally compounded with the metal base body. The preparation method comprises the steps of: pretreating the ceramic columns, fixing a ceramic array and metal-casing, wherein a ceramic surface metallization, ceramic or ceramic and metallization method is adopted in the pretreatment of the ceramic columns. By adopting the preparation method provided by the invention, ceramic integrally or locally reinforced metal composite materials or parts with different ceramic reinforcement contents and types can be easily prepared. The ceramic column array reinforced metal based composite material or part has macro-uniformity of the ceramic reinforcements, has the characteristics of high reliability, excellent ceramic / metal interface bonding and the like in the use process, and can be used in the fields such as bearing, friction wear and the like.

Description

technical field [0001] The invention relates to the technical field of preparation of ceramic / metal composite materials and parts, in particular to a ceramic column array reinforced metal matrix composite material or part and a preparation method thereof. Background technique [0002] Ceramic-reinforced metal-matrix composites or components formed by combining ceramics and metals can give full play to the performance advantages of the two types of materials to a certain extent, such as the high strength, high hardness, abrasion resistance, wear resistance, high temperature resistance and other characteristics of ceramic materials and metal The high toughness and high ductility of the material make it widely used in load-bearing, wear-resistant, high-temperature, and corrosive environments. The uniformity of ceramic reinforcement and its reliability during use directly affect the performance of ceramic reinforced metal matrix composites, and its reliability is closely related...

Claims

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Application Information

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IPC IPC(8): B22D19/00
Inventor 刘桂武乔冠军王倩史忠旗王继平王红洁杨建锋
Owner XI AN JIAOTONG UNIV
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