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Method for preparing Ti5Si3 intermetallic compound powder by mechanical alloying

A mechanical alloying, titanium metal technology, applied in the field of inorganic compound manufacturing process, can solve the problems of low yield, pollution, complex processing technology, etc., and achieve the effects of uniform distribution, high powder purity and high activity

Inactive Publication Date: 2015-04-01
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually Ti 5 Si 3 It can be realized by melting casting method, powder pressing and sintering method, rapid solidification method, self-propagating combustion method, etc., but these methods are easy to cause pollution, complex processing technology, low yield and limited

Method used

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  • Method for preparing Ti5Si3 intermetallic compound powder by mechanical alloying
  • Method for preparing Ti5Si3 intermetallic compound powder by mechanical alloying

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Weigh Si powder and Ti powder as raw materials according to the molar ratio of 3:5, and weigh ZrO according to the ball-to-material ratio of 20:1 (mass ratio). 2 Ceramic balls are used as grinding balls; carbon tetrachloride, which is 0.3 times the volume of the ball mill jar, is used as a process control agent. Put the weighed raw materials, grinding balls and process control agent into the ball mill jar, use Ar gas as the protective gas, put the sealed ball mill jar into the high-energy planetary ball mill, set the speed at 500 rpm, and the milling time at 40 Hour. The obtained ball mill slurry is vacuum-dried and ground, and passed through a 130-mesh sieve to obtain Ti 5 Si 3 Powder.

[0017] The powder obtained by the above process only contains Ti 5 Si 3 Phase, the particle size is on the order of microns and uniformly distributed, see figure 1 and 2 .

Embodiment 2

[0019] Weigh Si powder and Ti powder as raw materials according to the molar ratio of 3:5, and weigh ZrO according to the ball-to-material ratio (mass ratio) of 10:1. 2 Ceramic balls are used as grinding balls; carbon tetrachloride, which is 0.1 times the volume of the ball mill jar, is used as a process control agent. Put the weighed raw materials, grinding balls and process control agent into the ball mill jar, use Ar gas as the protective gas, put the sealed ball mill jar into a high-energy planetary ball mill, set the speed at 300 rpm, and the milling time at 50 Hour. The obtained ball mill slurry is vacuum-dried and ground, and passed through a 130-mesh sieve to obtain Ti 5 Si 3 Powder.

[0020] The powder obtained by the above process only contains Ti 5 Si 3 Phase, the particle size is on the order of microns and uniformly distributed, see figure 1 and 2 .

Embodiment 3

[0022] Weigh Si powder and Ti powder as raw materials according to the molar ratio of 3:5, and weigh ZrO according to the ball-to-material ratio (mass ratio) of 15:1. 2 Ceramic balls are used as grinding balls; carbon tetrachloride, which is 0.2 times the volume of the ball mill jar, is used as a process control agent. Put the weighed raw materials, grinding balls and process control agent into the ball mill jar, use Ar gas as the protective gas, put the sealed ball mill jar into the high-energy planetary ball mill, set the speed at 400 rpm, and the milling time at 45 Hour. The obtained ball mill slurry is vacuum-dried and ground, and passed through a 130-mesh sieve to obtain Ti 5 Si 3 Powder.

[0023] The powder obtained by the above process only contains Ti 5 Si 3 Phase, the particle size is on the order of microns and uniformly distributed, see figure 1 and 2 .

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Abstract

The invention relates to a method for preparing Ti5Si3 intermetallic compound powder by mechanical alloying, and belongs to the field of inorganic compound manufacturing. According to the method, Ti and Si powder mechanical alloying is carried out mainly by a high-energy ball mill method, tetrachloromethane is used as a process control agent, the ball mill process parameters such as the ball material ratio, the ball mill time and the ball mill rotating speed are optimized, ultra-fine highly dispersed Ti5Si3 powder is obtained. The method has the advantages that the mechanical alloying method is used for preparing the Ti5Si3 intermetallic compound powder, the energy consumption is low, the scaled production can be easily realized, the prepared powder can be used in the field of high-temperature structure materials and electric equipment devices, and good market prospects are realized.

Description

technical field [0001] The invention relates to a method for preparing intermetallic compound powder by mechanical alloying, more specifically, relates to a synthesis method of inorganic powder, and belongs to the field of inorganic compound manufacturing technology. Background technique [0002] Ti 5 Si 3 It has good high temperature stability, high high temperature strength and good oxidation resistance, and is expected to be used in high temperature structural materials above 1300 °C. In addition, due to its low electrical and thermal resistance, Ti 5 Si 3 It also holds promise for electrical connection structures and diffusion barriers. Usually Ti 5 Si 3 It can be realized by melting casting method, powder pressing and sintering method, rapid solidification method, self-propagating combustion method, etc., but these methods are easy to cause pollution, complicated processing technology, and low yield and are limited. The mechanical alloying method is a preparation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/04B22F1/00
Inventor 方双全刘澄黄新
Owner YANGZHOU UNIV
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