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Metal-ceramic composite lattice manufacturing method and metal-ceramic composite lattice structure

A composite lattice and manufacturing method technology, applied in the field of metal-ceramic composite lattice manufacturing and metal-ceramic composite lattice structure, can solve the problems of poor corrosion resistance, low high temperature strength, etc., and achieve enhanced service performance, high ratio Effects of strength and specific stiffness, good corrosion resistance

Active Publication Date: 2022-03-25
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above problems, the present application proposes a metal-ceramic composite lattice manufacturing method on the one hand, which can generate a ceramic layer in situ on a metal material with a three-dimensional lattice structure, and overcome the low high-temperature strength and poor corrosion resistance of traditional metal materials The problem

Method used

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  • Metal-ceramic composite lattice manufacturing method and metal-ceramic composite lattice structure
  • Metal-ceramic composite lattice manufacturing method and metal-ceramic composite lattice structure
  • Metal-ceramic composite lattice manufacturing method and metal-ceramic composite lattice structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0092] (1) Use SLM to print 316L stainless steel into a BCC (the body-centered cubic) lattice structure;

[0093] (2) Wash the BCC lattice structure sequentially with ultrasonic water for 5 minutes, acetone for 5 minutes, dilute hydrochloric acid for 5 minutes, ultrasonic water for 5 minutes, and dry;

[0094] (3) Put the dried BCC lattice structure into a vacuum furnace, use a vacuum system to evacuate the vacuum furnace to 7Pa, and then inject acetylene into the vacuum furnace in a pulse form with a partial pressure ratio of 1:3 and nitrogen, the furnace pressure is about 200Pa to stop;

[0095] (4) Use the control system to raise the temperature in the furnace to 910±10°C; hold for 7 hours;

[0096] (5) Utilize the cooling system to lower the temperature in the furnace to be room temperature;

[0097] (6) Utilize the control system to raise the temperature in the furnace to 650°C and keep it warm for 3 hours;

[0098] (7) Utilize the cooling system to lower the temperatu...

Embodiment 2

[0104] The difference from Example 1 is that the 316L stainless steel is printed into a BCCz (Z-direction enhanced-the body-centered cubic, Z-direction enhanced body-centered cube) lattice structure by using the selective laser melting technology SLM, and the metal-ceramic composite BCCz dots are obtained. array structure. The remaining operations and principles are consistent with Embodiment 1.

Embodiment 3

[0106] The difference from Example 1 is that the dried BCC lattice structure is put into a vacuum furnace, and the vacuum furnace is evacuated to 7Pa by using a vacuum system, and then simultaneously injected into the vacuum furnace with a partial pressure ratio of 1:3 to Inject ethane and nitrogen in the form of pulses, and stop at a furnace pressure of about 200 Pa to obtain a metal-ceramic composite BCC lattice structure. The remaining operations and principles are consistent with Embodiment 1.

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Abstract

The invention provides a metal-ceramic composite dot matrix manufacturing method and a metal-ceramic composite dot matrix structure, and the method comprises the following steps: selecting a metal raw material, and preparing the metal raw material into a metal material with a three-dimensional dot matrix structure through an additive manufacturing technology; residual impurities in the metal material are cleaned and then dried; the dried metal material is transferred into a vacuum furnace, a medium is injected into the vacuum furnace, reaction parameters in the vacuum furnace are set, the medium and the metal material are subjected to a thermal chemical reaction, and a metal-ceramic composite lattice structure with the ceramic performance on the surface is obtained; wherein the medium comprises any one of a carbon source and a nitrogen source; the reaction parameters at least comprise temperature parameters, pressure parameters and time parameters. According to the manufacturing method of the metal-ceramic composite lattice structure, the metal-ceramic composite lattice structure with high-temperature strength, low-temperature plasticity and good corrosion resistance can be obtained, and the service performance of the metal lattice structure is enhanced.

Description

technical field [0001] The present application relates to the field of composite materials, in particular to a metal-ceramic composite lattice manufacturing method and a metal-ceramic composite lattice structure. Background technique [0002] Metal materials have the characteristics of good plasticity and toughness, excellent electrical conductivity, high specific modulus and specific strength, and good processing performance, and are widely used in the fields of life, industry, and medicine. Especially in the fields of aerospace, marine and transportation, there are strict requirements for the lightweight and multi-functionality of metal materials, so the concept of metal lattice structure came into being. Due to its advantages of light weight, high rigidity, energy absorption and noise reduction, the lattice structure has attracted more and more attention in the application of metal materials. And with the vigorous development of additive manufacturing technology in recen...

Claims

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Application Information

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IPC IPC(8): B22F10/60B22F10/64B22F12/55B22F10/28B28B1/00B33Y10/00B33Y70/10
CPCB22F10/60B22F10/64B22F10/28B22F12/55B28B1/001B33Y10/00B33Y70/10B22F2207/03Y02P10/25
Inventor 崔一南吴俊豪刘长猛陈莹
Owner TSINGHUA UNIV
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