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A kind of preparation method of al4cu9 single crystal particles

A single crystal particle, al4cu9 technology, applied in the field of metal materials, can solve complex and cumbersome problems, and achieve the effect of simple process, good quality, and feasible operation method

Active Publication Date: 2020-03-31
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many existing methods for preparing single crystals, but they are all complicated and cumbersome.

Method used

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  • A kind of preparation method of al4cu9 single crystal particles
  • A kind of preparation method of al4cu9 single crystal particles
  • A kind of preparation method of al4cu9 single crystal particles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] (1) Weigh 0.56422g of high-purity Al powder and 3.00850g of Cu powder according to the atomic ratio (Al:Cu=30:70), mix the two powders evenly and put them into a cemented carbide mold with an inner diameter of Φ9.6mm , use a powder tablet press to press 3MPa and keep it for 180s to obtain a prefabricated block with a diameter of Φ9.6mm and a height of 10mm;

[0017] (2) The graphite furnace is a tubular furnace body with a height of 16.6mm and an outer diameter of Φ14mm and an inner diameter of Φ12mm. Both ends are sealed with a boron nitride sheet of Φ12mm and a thickness of 3.3mm. The graphite furnace is equipped with a boron nitride crucible with a height of 10mm and an outer diameter of Φ12mm and an inner diameter of Φ9.6mm. , both ends are sealed with boron nitride sheets with a diameter of Φ9.6mm and a thickness of 1.2mm. Together with the pyrophyllite cubes and conductive steel rings used in the six-sided top press, put them in a drying oven at 180°C for 3 hours ...

Embodiment 2

[0023] (1) Weigh 0.50738g of high-purity Al powder and 3.09259g of Cu powder according to the atomic ratio (Al:Cu=28:72), mix the two powders evenly and put them into a cemented carbide mold with an inner diameter of Φ9.6mm , use a powder tablet press to press 3MPa and keep it for 180s to obtain a prefabricated block with a diameter of Φ9.6mm and a height of 10mm;

[0024] (2) The graphite furnace is a tubular furnace body with a height of 16.6mm and an outer diameter of Φ14mm and an inner diameter of Φ12mm. Both ends are sealed with a boron nitride sheet of Φ12mm and a thickness of 3.3mm. The graphite furnace is equipped with a boron nitride crucible with a height of 10mm and an outer diameter of Φ12mm and an inner diameter of Φ9.6mm. , Both ends are sealed with boron nitride sheets with a diameter of Φ9.6mm and a thickness of 1.2mm. Put the graphite furnace, boron nitride crucible, boron nitride sheet, pyrophyllite square and conductive steel ring used together with the six-...

Embodiment 3

[0029] (1) Weigh 0.55768g of high-purity Al powder and 2.94231g of Cu powder according to the atomic ratio (Al:Cu=31:69), mix the two powders evenly and put them into a cemented carbide mold with an inner diameter of Φ9.6mm , use a powder tablet press to press 3MPa and keep it for 180s to obtain a prefabricated block with a diameter of Φ9.6mm and a height of 10mm;

[0030] (2) The graphite furnace is a tubular furnace body with a height of 16.6mm and an outer diameter of Φ14mm and an inner diameter of Φ12mm. Both ends are sealed with a boron nitride sheet of Φ12mm and a thickness of 3.3mm. The graphite furnace is equipped with a boron nitride crucible with a height of 10mm and an outer diameter of Φ12mm and an inner diameter of Φ9.6mm. , both ends are sealed with boron nitride sheets with a diameter of Φ9.6mm and a thickness of 1.2mm. Together with the pyrophyllite squares and conductive steel rings used in the six-sided top press, put them in a drying oven at a temperature of...

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Abstract

The invention provides a preparation method of an Al4Cu9 single-crystal particle. The atom ratio of the chemical components of AAl4Cu9 single crystal is as follows: 28-31% of Al and 69-72% of Cu; the preparation method of the Al4Cu9 single-crystal particle mainly comprises the steps of after evenly mixing high-purity aluminum powder and copper powder, putting the mixture into a hard alloy die, and using a powder compressing machine to apply 3MPa pressure and maintaining the pressure for 180 s to obtain a prefabricated block; putting the prepared prefabricated block into a boron nitride crucible, after assembling the boron nitride crucible, a tubular graphite furnace, graphite sheets and boron nitride sheets in sequence, placing the assembly into a cubic press, and maintaining the temperature for 30 min, wherein the pressure is set in the range of 3-5 GPa and the peak temperature is controlled in the range of 1100-1150 DEG C; when the temperature is reduced to 800-950 DEG C, maintaining the temperature for 1-2 h. The preparation method of the Al4Cu9 single-crystal particle has the advantages of simple process, true feasibility, common experiment equipment and good generated-single-crystal quality.

Description

technical field [0001] The invention belongs to the technical field of metal materials, in particular to a method for preparing single crystal particles. Background technique [0002] In today's society where science and technology are changing with each passing day, countless materials have been discovered and synthesized. Al-Cu alloy is a typical alloy system with many alloys such as Al 2 Cu, AlCu 3 and Al 4 Cu 9 And so on, excellent performance, wide application. The application of a material is determined by its performance, and the structure determines its performance. When we need to know a material, we not only need to do a performance test, but also start with the structure. When it comes to measuring the structure of a material, single crystals can be of great help. There are many existing methods for preparing single crystals, but they are all relatively complicated and cumbersome. Contents of the invention [0003] In order to prepare single crystals simp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J3/06
CPCB01J3/062
Inventor 范长增陈智银
Owner YANSHAN UNIV
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