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Titanium aluminium carbide powder and synthesis method using tin as reactive adjuvant therefor

A synthesis method and technology of reaction aids, applied in the field of synthesis of titanium aluminum carbide powder, can solve the problems of harmful powder performance, difficulty in increasing the content of synthetic powder, unfavorable formation, etc., to achieve industrial scale production and relax Effect of technical conditions and temperature control requirements

Inactive Publication Date: 2005-11-23
北京竞和科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But these added B 2 o 3 Ends up in the synthesized powder and is detrimental to the properties of the powder
Moreover, B 2 o 3 The presence of is not conducive to the synthesis reaction process of Ti 3 AlC 2 generation, so it is difficult to increase the Ti in the synthetic powder 3 AlC 2 Content

Method used

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  • Titanium aluminium carbide powder and synthesis method using tin as reactive adjuvant therefor

Examples

Experimental program
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Embodiment 1

[0021] A small sample with a total weight of 9.0 grams. Weigh 5.98 grams of Ti powder, 1.12 grams of Al powder, 0.91 grams of graphite powder, and 0.99 grams of Sn powder, add 6 milliliters of absolute ethanol and 20 grams of agate balls after mixing, ball mill the mixture for 2 hours, then dry, grind, pass 100-mesh sieve, compacted under a pressure of 15MPa, put into a graphite mold in a high-temperature furnace, protected by argon, heat up to 1500°C at a rate of 38°C / min, hold for 5min, and heat at a rate of 10-15°C / min The furnace temperature is lowered to 60°C, and the loose block formed by the reaction is taken out and ground to obtain the titanium-aluminum carbide powder of the present invention; wherein the volume content of the titanium-aluminum carbide is greater than 99%. This example shows the details of the operation of synthesizing titanium aluminum carbide powder under the upper limit temperature and heating rate close to the upper limit described in the present ...

Embodiment 2

[0023] A small sample of the invention had a total weight of 44.3 grams. Weigh 30.0 grams of Ti powder, 6.0 grams of Al powder, 4.6 grams of graphite powder, and 3.7 grams of Sn powder, add 31 milliliters of absolute ethanol and 100 grams of agate balls after mixing, and mix the materials for 3 hours by ball milling, then dry, grind, pass 100-mesh sieve, compacted under a pressure of 20MPa, put it into a graphite mold in a high-temperature furnace, protect it with argon, raise the temperature to 1450°C at a rate of 30°C / min, keep it for 5min, and heat it at a rate of 10-15°C / min. The temperature of the furnace is lowered to 60°C, and the loose block formed by the reaction is taken out and ground to obtain the titanium-aluminum carbide powder of the present invention; wherein the volume content of the titanium-aluminum carbide is greater than 98.5%. This example shows the operation details of synthesizing titanium aluminum carbide powder under the conditions of optional paramet...

Embodiment 3

[0025] A larger sample with a total weight of 432.3 grams. Take by weighing 287.5 grams of Ti powder, 54.0 grams of Al powder, 43.3 grams of graphite powder, and 47.5 grams of Sn powder, add 303 milliliters of absolute ethanol and 1080 grams of agate balls after mixing, and ball mill the mixture for 6 hours, then dry, grind, pass 100-mesh sieve, compacted under a pressure of 10MPa, put into a graphite mold in a high-temperature furnace, protected by argon, heat up to 1350°C at a rate of 20°C / min, hold for 5min, and heat at a rate of 10-15°C / min The temperature of the furnace is lowered to 60° C., and the loose block formed by the reaction is taken out and ground to obtain the titanium-aluminum carbide powder of the present invention; wherein the volume content of the titanium-aluminum carbide is greater than 98.0%. This example demonstrates the operation details of synthesizing titanium aluminum carbide powder under the conditions of the lower limit temperature and the lower l...

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Abstract

The invention discloses a titanium aluminium carbide powder and synthesis method using tin as reactive adjuvant characterized in that, using titanium (Ti), aluminium (Al) and graphite (C) as raw material, using stannum (Sn) as reaction adjuvant, proportioning by the mol ratio of Ti : Al : C : Sn = 3.0 : 1.0 : (1.8-2.0) : (0.1-0.2), mixing 2-6 hours through ball grinding, drying at 60-70 deg. C in baking oven, briquetting the dried mixture under 10-20MPa, loading into high temperature furnace, argon shielding, elevating the temperature to 1300-1550 deg. C. at the speed of 20-40 deg. C per minutes, heat preserving for 5-10 minutes, cooling with the speed of 10-15 deg. C / min.

Description

technical field [0001] The present invention relates to a kind of titanium aluminum carbide (Ti 3 AlC 2 ) powder and a method for synthesizing the titanium aluminum carbide powder with tin (Sn) as reaction aid. Background technique [0002] Titanium aluminum carbide powder is a new type of ternary carbide ceramic powder, which can be used as a raw material to prepare titanium aluminum carbide blocks with high electrical conductivity, high thermal conductivity, thermal shock resistance, self-lubrication, and machinability. Bulk materials and various composite materials and devices containing titanium aluminum carbides. [0003] Titanium aluminum carbide was first discovered as a new substance in 1994 by Pietzka and Schuster (J.Phase Equilib, 1994[15]: 392). In 2000, Tzenov et al. (J.Am Ceram.Soc, 2000[83]: 825) used Ti powder, Al 4 C 3 Ti powder and graphite powder were used as raw materials, and Ti with 4% alumina was synthesized in situ by hot isostatic pressing (HIP) ...

Claims

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Application Information

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IPC IPC(8): C01B31/30
Inventor 翟洪祥艾明星周洋黄振莺张志力李世波
Owner 北京竞和科技有限公司
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