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

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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 an

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
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Example Embodiment

[0025] Example 1

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

[0027] Step 1: Pretreatment of ceramic column: First, the size is Al 2 O 3 The ceramic column is cleaned, and then the ball-milled mixed powder with a median diameter of 1.642 microns and a mass ratio of Mo, MnO, and Al with a mass ratio of 70:12:10.5:7.5 2 O 3 And SiO 2 Metallized mixed powder, ethylene oxalate and collodion solution are prepared in proportion of 5g: 6ml: 5ml, and the prepared Mo-Mn metallized paste is applied to the cleaned Al 2 O 3 The surface of the ceramic column, after being dried, is placed in a hydrogen furnace at 1450°C, holding for 50 minutes for metallization, then electroplating or electroless plating of 5-10μm Ni, and finally holding for 60 minutes in a vacuum furnace at 1000°C for sintering Ni treatment .

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

Example Embodiment

[0030] Example 2

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

[0032] Step 1: Pretreatment of ceramic column: First, the size is Al 2 O 3 The ceramic column is cleaned, and then the ceramic column is buried in NiSO with a mass ratio of 1:1 4 ·6H 2 O and Na 2 SO 4 In the mixed salt, then heat to 900℃ for 60 minutes to make NiSO 4 Melt and decompose, then cool, and then boil and wash to remove the salt on the ceramic surface.

[0033] Step 2: Fix the array: put the pre-processed Al 2 O 3 The ceramic columns are arranged alternately according to the center spacing of 10mm, and are directly inserted and fixed at the bottom of the sand mold.

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

Example Embodiment

[0035] Example 3

[0036] Al 2 O 3 , ZrO 2 And SiO 2 Preparation method of ceramic column array integrally reinforced Mg-based composite material

[0037] Step 1: Pretreatment of ceramic column: First, the size is Al 2 O 3 , ZrO and SiO 2 The ceramic column is cleaned and then ball-milled TiH with a median diameter of 2.785 microns 2 The proportion of powder, ethylene oxalate and collodion solution is 5g: 4ml: 4ml prepared TiH 2 The paste was coated on the surface of the three types of ceramic columns after cleaning, and then placed in a vacuum furnace at 1000°C after being dried, and kept for 30 minutes.

[0038] Step 2: Fix the array: put the pre-processed Al 2 O 3 , ZrO 2 And SiO 2 The ceramic columns are arranged alternately according to the center spacing of 10mm, and are directly inserted and fixed at the bottom of the sand mold.

[0039] (3) Metal casting: At a pouring temperature of about 700 ℃, the molten Mg alloy (brand name AZ91D) is poured into a preheated metal mold with ...

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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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