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Copper infiltration technology, copper infiltration material prepared through copper infiltration technology, and application

A copper infiltration and process technology, applied in the field of metal composite material preparation, can solve the problems of low product qualification rate, high production cost, long copper infiltration cycle, etc., and achieve the effects of high product qualification rate, low cost and short process cycle.

Inactive Publication Date: 2019-02-22
北京九土科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with this copper infiltration process is that special copper infiltration equipment is required, the copper infiltration cycle is long, the production cost is high, and the product qualification rate is low

Method used

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  • Copper infiltration technology, copper infiltration material prepared through copper infiltration technology, and application
  • Copper infiltration technology, copper infiltration material prepared through copper infiltration technology, and application
  • Copper infiltration technology, copper infiltration material prepared through copper infiltration technology, and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as image 3 As shown in the schematic diagram of the copper infiltration process, the tungsten copper infiltration material described in this embodiment is prepared by the following process, which specifically includes the following steps:

[0044] (1) Fill the metal tungsten powder in the mold for powder molding, press molding under the pressure condition of 200MPa, prepare the tungsten skeleton green body, demold the prepared skeleton green body, reshape it, install it in the furnace, and sinter it under the hydrogen atmosphere, Control the sintering temperature to 2400°C, keep it warm for 5 hours, and cool to obtain the required porous tungsten skeleton 1 sintered billet;

[0045] (2) The porous tungsten skeleton 1 prepared above is burnt into a selected graphite crucible 3 to ensure that there is a gap between them, and electrolytic copper is added to the crucible as an infiltration agent 2. In this embodiment , calculate the amount of electrolytic copper adde...

Embodiment 2

[0049] Such as image 3 As shown in the schematic diagram of the copper infiltration process, the tungsten copper infiltration material described in this embodiment is prepared by the following process, which specifically includes the following steps:

[0050] (1) Fill the metal tungsten powder in the mold for powder molding, press molding under the pressure condition of 200MPa, prepare the tungsten skeleton green body, demold the prepared skeleton green body, reshape it, install it in the furnace, and sinter it under the hydrogen atmosphere, Control the sintering temperature to 2200°C, keep it warm for 4 hours, and cool to obtain the required porous tungsten skeleton 1 sintered billet;

[0051] (2) The porous tungsten skeleton 1 prepared above is burnt into a selected graphite crucible 3 to ensure that there is a gap between them, and electrolytic copper is added to the crucible as an infiltration agent 2. In this embodiment , calculate the amount of electrolytic copper adde...

Embodiment 3

[0055] Such as image 3 As shown in the schematic diagram of the copper infiltration process, the molybdenum copper infiltration material described in this embodiment is prepared by the following process, which specifically includes the following steps:

[0056] (1) Fill metal molybdenum powder in a mold for powder molding, press molding under 150MPa pressure condition, prepare molybdenum skeleton green body, demould and shape the prepared molybdenum skeleton green body, put into furnace for sintering under hydrogen atmosphere , control the sintering temperature to 1700°C, carry out heat preservation and sintering for 5 hours, and cool to obtain the required porous molybdenum skeleton 1 sintered billet;

[0057] (2) The porous molybdenum skeleton 1 prepared above is burnt into the selected graphite boat crucible 3 to ensure that there is a gap between them, and electrolytic copper is added to the crucible as the infiltration agent 2. In this embodiment , calculate the amount ...

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Abstract

The invention relates to a copper infiltration technology, and a copper infiltration material prepared through the copper infiltration technology. According to the copper infiltration technology, through the mode that a porous metal framework and an infiltration agent are simultaneously added into a selected crucible, the infiltration agent is heated and melted so as to infiltrate into pores of the metal framework, the specific temperature gradient is built in the cooling process, it is ensured that the infiltration agent provides liquid phase compensation in the metal framework from the bottom, and directional solidification is conducted from top to bottom. Through the technology, the pore filling rate and the copper infiltration uniformity of the porous metal framework can be effectivelyimproved, and the technology has the advantages that operation is easy and convenient, equipment is simple, the technology is flexible, the cost and energy consumption are low, the machining period is short, the product performance quality is good, and the percent of pass is high; a prepared anti-ablation material has the thermal shock resistance, ablation resistance and transpiration cooling effects, and can be used for solid rocket engine jet vanes, protective plates, fasteners, connection plates, throat linings and / or space counter weights, and the industrial application field of the material is further broadened.

Description

technical field [0001] The invention belongs to the technical field of metal composite material preparation, and in particular relates to a copper infiltration process and a copper infiltration material prepared by it, and further discloses that the copper infiltration material is used to prepare ablation-resistant materials and components for solid rocket motors and / or Or the use of aerospace counterweights. Background technique [0002] Ablation-resistant materials for solid rocket motors, including gas rudders, guard plates, fasteners, connecting plates and / or throat liners, etc., work in high-temperature, high-speed and high-density engine gas flows, and require high Thermal shock, anti-erosion ablation and other characteristics. Aerospace counterweight materials, such as ends, leading edges, and reentry components, are used in high-speed, heavy-duty aircraft, and must withstand severe acceleration, vibration, impact, and certain aerodynamic heating temperatures, requir...

Claims

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Application Information

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IPC IPC(8): C23C10/22
CPCC23C10/22
Inventor 邝用庚
Owner 北京九土科技有限公司
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