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Method for preparing Al-Pd-Fe two-dimensional quasicrystal particles

An al-pd-fe, quasicrystal technology, applied in the field of preparation of quasicrystal particles, can solve the problems of complex process, high operation requirements, and many equipment needs, and achieves simple process operation, strong operability, and less time consumption. Effect

Active Publication Date: 2018-11-30
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the preparation cost of experimental quasicrystal materials is expensive, the process is complicated, the operation requirements are high, and the equipment needs more

Method used

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  • Method for preparing Al-Pd-Fe two-dimensional quasicrystal particles
  • Method for preparing Al-Pd-Fe two-dimensional quasicrystal particles
  • Method for preparing Al-Pd-Fe two-dimensional quasicrystal particles

Examples

Experimental program
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Effect test

Embodiment 1

[0020] (1) Calculate and weigh high-purity Al powder, Pd powder, Fe powder raw material according to atomic proportion, its weight is respectively 0.9701g, 0.7617g, 0.2683g (according to Al 75 PD 15 Fe 10 Weighing), the above powder is placed in a mortar, fully ground and mixed evenly, and placed in a graphite crucible with an inner diameter of Φ20mm, and pressurized at 1MPa in a hydraulic tablet press for 100s to obtain a sheet pre-pressed sample with a diameter of Φ20mm;

[0021] (2) The graphite crucible is a tubular furnace body with a height of 40mm and an outer diameter of Φ50mm and an inner diameter of Φ20mm. Both ends are sealed with graphite plugs of Φ20mm and a thickness of 20mm. The graphite furnace is covered with a layer of carbon paper. The carbon paper is 63mm long and 40mm wide. On the inner side of the furnace, Φ20mm carbon paper is used at both ends to separate the graphite plug from the sample to prevent the sample from reacting with the graphite furnace un...

Embodiment 2

[0027] (1) Calculate and weigh high-purity Al powder, Pd powder, Fe powder raw material according to atomic ratio, its weight is respectively 0.7820g, 1.1018g, 0.1157g (according to Al 70 PD 25 Fe 5 Weighing), the above-mentioned powder is placed in a mortar, fully ground and mixed evenly, and placed in a graphite crucible with an inner diameter of Φ20mm, and pressurized at 1.5Mpa in a hydraulic tablet press for 80s to obtain a sheet pre-pressed sample with a diameter of Φ20mm;

[0028] (2) The graphite crucible is a tubular furnace body with a height of 40mm and an outer diameter of Φ50mm and an inner diameter of Φ20mm. Both ends are sealed with graphite plugs of Φ20mm and a thickness of 20mm. The graphite furnace is covered with a layer of carbon paper. The carbon paper is 63mm long and 40mm wide. On the inner side of the furnace, Φ20mm carbon paper is used at both ends to separate the graphite plug from the sample to prevent the sample from reacting with the graphite furna...

Embodiment 3

[0034] (1) Calculate and weigh high-purity Al powder, Pd powder, Fe powder raw material according to atomic proportion, its weight is respectively 1.0310g, 0.5422g, 0.4268g (according to Al 75 PD 10 Fe 15 Weighing), the above powder is placed in a mortar, fully ground and mixed evenly, and placed in a graphite crucible with an inner diameter of Φ20mm, and pressurized at 2Mpa in a hydraulic tablet press for 60s to obtain a thin sheet pre-pressed sample with a diameter of Φ20mm;

[0035](2) The graphite crucible is a tubular furnace body with a height of 40mm and an outer diameter of Φ50mm and an inner diameter of Φ20mm. Both ends are sealed with graphite plugs of Φ20mm and a thickness of 20mm. The graphite furnace is covered with a layer of carbon paper. The carbon paper is 63mm long and 40mm wide. On the inner side of the furnace, Φ20mm carbon paper is used at both ends to separate the graphite plug from the sample to prevent the sample from reacting with the graphite furnace...

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Abstract

The invention discloses a method for preparing Al-Pd-Fe two-dimensional quasicrystal particles. The Al-Pd-Fe quasicrystal comprises 70-75% of Al, 10-25% of Pd and 5-15% of Fe. The method comprises: fully and uniformly mixing high-purity Al powder, Pd powder and Fe powder through a mortar, uniformly distributing the mixed metal powder in a graphite abrasive cavity, pre-pressing the mixed metal powder through a mold tableting machine, keeping 1-2MPa for 60-100s, coating a graphite crucible with a carbon felt, orderly placing a carbon paper, a large graphite block, a carbon paper, a small graphite cushion block, the prepared graphite crucible, a small graphite cushion block, a carbon paper, a large graphite cushion block and a carbon paper in a pressure chamber of SPS, carrying out compression, carrying out heating to 1000 to 1100 DEG C under sintering pressure of 50MPa, keeping the temperature for 10-20min and carrying out furnace cooling to the room temperature. The method has simple processes and strong operability, utilizes conventional equipment, has small time consumption, is free of raw material treatment and directly uses mixed raw materials to synthesize the two-dimensional quasicrystalline phase.

Description

technical field [0001] The invention belongs to the technical field of metal materials, in particular to the preparation of quasi-crystal particles. Background technique [0002] Al-Pd-TM (TM is a transition metal element) series quasicrystalline phase has high hardness, low friction coefficient and strong brittleness, and the main research on its application at this stage is as a reinforcing phase of Al-based composite materials. The study found that the quasicrystalline phase formed in the rapidly solidified Al-Pd-TM alloy, even in the fully annealed state, the phase structure of the Al-Pd-TM alloy can remain unchanged, which shows that the Al-Pd-TM alloy A series of quasicrystals have stable structures. In the previous experimental research, the researchers prepared the Al-Pd-Fe two-dimensional quasi-crystalline phase by melting an appropriate amount of high-purity Al, Pd, Fe and water quenching to room temperature under an argon atmosphere, or using a high-speed rotatin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/04C22C5/04C22C21/00
CPCC22C1/0416C22C1/0466C22C5/04C22C21/00C22C2200/06
Inventor 范长增李豪
Owner YANSHAN UNIV
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