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Preparation method used for laser 3D printing metal ceramic composite powder

A 3D printing and cermet technology, applied in metal processing equipment, additive manufacturing, additive processing, etc., can solve the problems of low in-situ synthesis chemical reaction rate and in-situ synthesis failure, and achieve excellent high-temperature oxidation resistance, The effect of uniform dispersion distribution combination, uniform and dense tissue

Active Publication Date: 2020-05-08
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a powder preparation method for laser 3D printing metal-ceramic composite materials. The technical problem that the site synthesis is not carried out according to the stoichiometric ratio; specifically includes the following steps:

Method used

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  • Preparation method used for laser 3D printing metal ceramic composite powder
  • Preparation method used for laser 3D printing metal ceramic composite powder
  • Preparation method used for laser 3D printing metal ceramic composite powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A preparation method for laser 3D printing metal-ceramic composite powder, specifically comprising the following steps:

[0026] (1) According to the mass ratio m(Ti):m(B 4 C)=2.6:1, take by weighing the pure Ti powder and pure B preserved in vacuum seal 4 C powder is compounded; the Ti powder is a spherical particle with a particle size of 20 μm, and the purity is not less than 99.99%; the B 4 C powder is an amorphous angular ceramic particle with an equivalent particle size of 15 μm, and the purity is not lower than 99.99%.

[0027] (2) PVA binder solution: take by weighing a beaker with a mass fraction of 5% PVA particles and 95% deionized water, then use a magnetic stirrer to fully stir it to prepare the PVA binder solution, the magnetic stirrer The stirring speed is 40rpm, the stirring time is 30min, and the temperature of the PVA solution is stirred to 90°C.

[0028] (3) in Ti / B 4 Add PVA binder solution to the mixed powder of C, wherein, the mass fraction of ...

Embodiment 2

[0031] A preparation method for laser 3D printing metal-ceramic composite powder, specifically comprising the following steps:

[0032] (1) According to the mass ratio m(Ti):m(B 4 C)=2.6:1, weigh the pure Ti powder and pure B 4 C powder is used for compounding, the Ti powder is a spherical particle with a particle size of 13.5 μm, and the purity is not less than 99.99%; the B 4 C powder is an amorphous angular ceramic particle with an equivalent particle size of 10 μm, and the purity is not lower than 99.99%.

[0033] (2) PVA binder solution: use a beaker to weigh 7% PVA particles and 93% deionized water with a beaker, then use a magnetic stirrer to fully stir it to prepare the PVA binder, the magnetic stirrer The parameter setting is consistent with that in Example 1.

[0034] (3) in Ti / B 4 Add PVA binder solution to the mixed powder of C, wherein, the mass fraction of PVA binder solution is 15%, Ti / B 4 The mass fraction of the C mixed powder is 85%, and it is stirred ev...

Embodiment 3

[0037] A preparation method for laser 3D printing metal-ceramic composite powder, specifically comprising the following steps:

[0038] (1) According to the mass ratio m(Ti):m(B 4 C)=2.6:1, weigh the pure Ti powder and pure B 4 C powder is used for compounding, the Ti powder is a spherical particle with a particle size of 10 μm, and the purity is not less than 99.99%; the B 4 C powder is an amorphous angular ceramic particle with an equivalent particle size of 5 μm, and the purity is not lower than 99.99%.

[0039] (2) PVA binder solution: take by weighing a beaker with a mass fraction of 10% PVA particles and 90% deionized water, then use a magnetic stirrer to fully stir it to prepare the PVA binder, the magnetic stirrer The parameter setting is consistent with that in Example 1.

[0040] (3) in Ti / B 4 Add PVA binder solution to the mixed powder of C, wherein, the mass fraction of PVA binder solution is 15%, Ti / B 4 The mass fraction of the C mixed powder is 85%, and the ...

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Abstract

The invention discloses a preparation method used for laser 3D printing metal ceramic composite powder, and belongs to the field of preparation of powder materials for laser 3D printing. Through the physical method, pure Ti powder and pure B4C powder particles are coated (or bonded) according to the mass ratio of 2.6:1, drying and ball grinding crushing treatment are carried out in sequence, and aTi / B4C composite powder material is prepared; and then the powder material and AlSi1-Mg powder are added into a ball grinder to be subjected to vacuum ball grinding, and finally the evenly-mixed powder for the laser 3D printing metal ceramic composite is prepared. By means of the preparation method, the technical problem that in the 3D printing process of an existing metal ceramic composite, dualwild phases cannot be synthesized is solved, the reaction rate of Ti and B4C particles in the laser 3D printing process is increased, and the content of a ceramic wild phase in the dual-phase composite is increased; and the prepared composite powder can be used for laser near-net forming or selective laser melting and other high-energy beam 3D printing processes.

Description

technical field [0001] The invention relates to a method for preparing metal-ceramic composite material powder for laser 3D printing, and belongs to the technical field of powder preparation for laser 3D printing. Background technique [0002] For a long time, metal-ceramic composite parts have excellent engineering application potential in the fields of aerospace, nuclear energy and automobile manufacturing due to their high specific strength and specific stiffness, excellent corrosion resistance, wear resistance and good high-temperature mechanical properties . At present, the preparation methods of metal-ceramic composite parts mainly include the method of adding ceramic phase and in-situ generation of ceramic phase. Interfacial relationship, finer grains and higher structural stability, so that the comprehensive performance of composite materials can be improved. [0003] After searching the existing technical literature, researchers at home and abroad have made some a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/05C22C1/10C22C21/02C22C32/00B22F1/00B22F9/04B22F3/105B33Y70/10
CPCC22C1/055C22C21/02C22C32/0047B22F9/04B33Y70/00B22F2009/043B22F10/00B22F1/052B22F1/10B22F10/34B22F10/25B22F10/28Y02P10/25
Inventor 张晓伟易俊超肖静宇刘洪喜蒋业华黎振华
Owner KUNMING UNIV OF SCI & TECH
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