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A low-cost titanium-based porous material fabrication process with high energy absorption properties

A technology of porous materials and absorption characteristics, which is applied in the field of low-cost titanium-based porous material preparation technology, can solve the problems of high cost and low strength, and achieve the effect of improving bonding strength, low density, and increasing bonding area

Active Publication Date: 2022-01-28
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing metal porous impact protection materials include titanium alloy honeycomb material, foamed aluminum porous material, etc. The former is made of titanium thin plate machine, and the cost is high, while the latter has low strength and high cost

Method used

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  • A low-cost titanium-based porous material fabrication process with high energy absorption properties
  • A low-cost titanium-based porous material fabrication process with high energy absorption properties

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] This embodiment includes the following steps:

[0023] Step 1. Pre-compressing the accumulated titanium chips along the thickness direction at room temperature to obtain a titanium-based porous green body; the porosity of the titanium-based porous green body is 80%;

[0024] Step 2. Place the titanium-based porous green body obtained in step 1 in a vacuum furnace at a temperature of 1200° C. and a vacuum degree of 1×10 -2 Under the condition of Pa, heat preservation for 2 hours for high-temperature vacuum sintering, so that the node parts in the titanium-based porous green body are metallurgically bonded, and the titanium-based porous green body is obtained after cooling;

[0025] Step 3, inject 502 glue into the pores of the titanium-based porous body obtained in step 2 at room temperature to fill each node area, and obtain a titanium-based porous material after drying at room temperature; the equivalent pores of the titanium-based porous material The degree is 70%. ...

Embodiment 2

[0035] This embodiment includes the following steps:

[0036] Step 1. Pre-compressing the accumulated titanium chips along the thickness direction at room temperature to obtain a titanium-based porous green body; the porosity of the titanium-based porous green body is 87%;

[0037] Step 2. Place the titanium-based porous green body obtained in step 1 in a vacuum furnace at a temperature of 1200° C. and a vacuum degree of 1×10 -2 Under the condition of Pa, heat preservation for 2 hours for high-temperature vacuum sintering, so that the node parts in the titanium-based porous green body are metallurgically bonded, and the titanium-based porous green body is obtained after cooling;

[0038] Step 3, inject 502 glue into the pores of the titanium-based porous body obtained in step 2 at room temperature to fill each node area, and obtain a titanium-based porous material after drying at room temperature; the equivalent pores of the titanium-based porous material The degree is 77%. ...

Embodiment 3

[0042] This embodiment includes the following steps:

[0043] Step 1. Pre-compressing the aggregated titanium chips along the thickness direction at room temperature to obtain a titanium-based porous green body; the porosity of the titanium-based porous green body is 72%;

[0044] Step 2. Place the titanium-based porous green body obtained in step 1 in a vacuum furnace at a temperature of 1200° C. and a vacuum degree of 1×10 -2 Under the condition of Pa, heat preservation for 2 hours for high-temperature vacuum sintering, so that the node parts in the titanium-based porous green body are metallurgically bonded, and the titanium-based porous green body is obtained after cooling;

[0045] Step 3, inject 502 glue into the pores of the titanium-based porous body obtained in step 2 at room temperature to fill each node area, and obtain a titanium-based porous material after drying at room temperature; the equivalent pores of the titanium-based porous material The degree is 64%.

[...

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Abstract

The invention discloses a low-cost titanium-based porous material preparation process with high energy absorption characteristics. The process includes: 1. Precompressing the accumulated titanium-based scraps along the thickness direction to obtain a titanium-based porous green body; 2. The titanium-based porous green body is sintered in high temperature vacuum to obtain a titanium-based porous body; 3. Inject 502 glue into the pores of the titanium-based porous body to fill each node area, and dry at room temperature to obtain a titanium-based porous material. The present invention uses titanium-based scraps as raw materials, and adopts powder metallurgy technology to prepare titanium-based porous blanks, so that nodes and metallurgical bonds are formed between iron filings, and 502 glue is injected into the pores of titanium-based porous blanks to improve the The bonding area between titanium-based scraps can be improved, thereby improving the overall bonding strength. The compressive strength and energy absorption characteristics of the obtained titanium-based porous materials are significantly improved, and the density is low, which is suitable for impact protection of vehicles and aircrafts. At the same time, the cost of raw materials Greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of titanium-based porous materials, and in particular relates to a preparation process of low-cost titanium-based porous materials with high energy absorption characteristics. Background technique [0002] Impact protection materials can effectively protect personnel and key components from impact stress damage in the event of high-speed impact accidents, so they are widely used in vehicles and aircraft. Impact protection materials not only need to have high energy absorption performance, but also need to have characteristics such as low density, high strength, and low cost, so as to reduce the additional weight and cost of vehicles and aircraft. Existing metal porous impact protection materials include titanium alloy honeycomb material, aluminum foam porous material, etc. The former is made of titanium thin plate machine, and the cost is high, while the latter has low strength and high cost. Therefore, it ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/11B22F3/10B22F3/26B22F8/00
CPCB22F3/11B22F3/1007B22F3/26B22F8/00B22F2999/00B22F2201/20Y02W30/50
Inventor 马军王建忠敖庆波李烨吴琛
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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