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Lost foam casting method of three-dimensional network ceramic-iron-based composite material

An iron-based composite material and lost foam casting technology, which is applied in the direction of casting molding equipment, molds, and mold components, can solve the problems of poor economy, poor wettability between ceramics and metal substrates, etc., and achieve poor wettability , Improving the comprehensive mechanical properties and hindering the effect of interface reaction

Active Publication Date: 2017-11-28
SHENYANG POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process is flexible, and it is relatively easy to control the volume fraction, structure and spatial distribution of the ceramic body in the composite material, and can prepare composite materials with complex shapes. The disadvantage is that the economy is slightly poor.
[0007] Summarizing the above various preparation methods, the wettability of ceramics and metal substrates is poor, and the interface reaction at high temperature is still a major problem restricting the development and application of ceramic-metal composites

Method used

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  • Lost foam casting method of three-dimensional network ceramic-iron-based composite material
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  • Lost foam casting method of three-dimensional network ceramic-iron-based composite material

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Experimental program
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Effect test

Embodiment 1

[0053] (1) Perform surface roughening, neutralization, sensitization, activation and reduction pretreatment on the three-dimensional network ceramic 3 at room temperature, so that hypophosphite ions are attached to the surface of the ceramic, and the plating solution with nickel sulfate as the main salt includes: Nickel sulfate solution 20g / L, sodium hypophosphite solution 30g / L, sodium acetate solution 20g / L, sodium citrate solution 5g / L and lead chloride solution 0.003g / L configure the electroless plating solution and heat up to 70°C. Nickel ions are chemically reduced to metal nickel, deposited on the surface of the ceramic and form a Ni-P composite coating, and electroless nickel plating is performed on the surface of the three-dimensional network ceramic 3; after plating, the surface appearance of the three-dimensional network ceramic 3 is as follows image 3 As shown, the obtained Ni-P composite coating is uniform, dense, and firmly attached to the surface of the three-di...

Embodiment 2

[0063] (1) Perform surface roughening, neutralization, sensitization, activation and reduction pretreatment on the three-dimensional network ceramic 3 at room temperature, so that hypophosphite ions are attached to the surface of the ceramic, and the plating solution with nickel sulfate as the main salt includes: Nickel sulfate solution 28g / L, sodium hypophosphite solution 35g / L, sodium acetate solution 25g / L, sodium citrate solution 10g / L and lead chloride solution 0.010g / L configure the chemical plating solution and heat up to 80°C. Nickel ions are chemically reduced to metal nickel, deposited on the surface of the ceramic and form a Ni-P composite coating, and electroless nickel plating is performed on the surface of the three-dimensional network ceramic 3; after plating, the surface appearance of the three-dimensional network ceramic 3 is as follows Figure 4 As shown, the obtained Ni-P composite coating is uniform, dense, and firmly attached to the surface of the three-dim...

Embodiment 3

[0073] (1) Perform surface roughening, neutralization, sensitization, activation and reduction pretreatment on the three-dimensional network ceramic 3 at room temperature, so that hypophosphite ions are attached to the surface of the ceramic, and the plating solution with nickel sulfate as the main salt includes: Nickel sulfate solution 25g / L, sodium hypophosphite solution 32g / L, sodium acetate solution 22g / L, sodium citrate solution 8g / L and lead chloride solution 0.005g / L configure the electroless plating solution and heat up to 75°C. Nickel ions are chemically reduced to metal nickel, deposited on the surface of the ceramic and form a Ni-P composite coating, and electroless nickel plating is performed on the surface of the three-dimensional network ceramic 3; after plating, the surface appearance of the three-dimensional network ceramic 3 is as follows Figure 5 As shown, the obtained Ni-P composite coating is uniform, dense, and firmly attached to the surface of the three-d...

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Abstract

The invention discloses a lost foam casting method of a three-dimensional network ceramic-iron-based composite material. The method comprises the steps of performing surface treatment and chemical plating on three-dimensional network ceramic, manufacturing a model cluster, brushing fire-resistant coating on the model cluster and drying the model cluster, performing modeling, burying sand, performing vibrating, smelting a metal matrix, sucking a sand box to gain negative pressure, performing spheroidization and inoculation on an iron matrix, performing casting, opening the sand box and cleaning sand. The main components of foam ceramic are SiC and Al2O3. Smelting of the metal is carried out in an intermediate frequency furnace. According to the lost foam casting method of the three-dimensional network ceramic-iron-based composite material, compared with an existing preparation method, the method is simpler in operation, short in production technology and lower in technology cost; and the method is suitable for preparation of castings with various sizes, and castings of different ceramic reinforcing parts, with different ceramic contents and different shape requirements can be prepared.

Description

technical field [0001] The invention belongs to the field of material preparation, and relates to a method for preparing a ceramic-reinforced metal-based composite material, in particular to a method for preparing a three-dimensional network ceramic-reinforced iron-based composite material. Background technique [0002] Ceramic-reinforced iron-based composites not only have the excellent properties of ceramic materials such as wear resistance, high temperature resistance, and corrosion resistance, but also have the excellent properties of high toughness, electrical conductivity and heat conduction of metal substrates, so ceramic-reinforced iron-based composites will be used in wear-resistant It has important applications in the fields of damage, high temperature resistance, and corrosion resistance. According to the type of ceramic reinforced metal matrix composites, it can be divided into: zero-dimensional reinforcement (particle reinforcement), one-dimensional reinforcemen...

Claims

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Application Information

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IPC IPC(8): B22D19/02B22C9/04B22C3/00B22D1/00
CPCB22C3/00B22C9/04B22D1/00B22D19/02
Inventor 曲迎东刘靓张震何文昌赵宇黄靖轩
Owner SHENYANG POLYTECHNIC UNIV
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