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Preparation method of metallic titanium carbide ceramic

A carbide and metal titanium technology is applied in the field of preparation of metal titanium carbide ceramics, and can solve the problems of complex preparation method and cumbersome process.

Inactive Publication Date: 2014-10-01
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, TiCx (x=0.50-0.7) materials have been widely studied as electrochemical hydrogen storage materials, but their preparation methods are complicated and the process is cumbersome.

Method used

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  • Preparation method of metallic titanium carbide ceramic
  • Preparation method of metallic titanium carbide ceramic
  • Preparation method of metallic titanium carbide ceramic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Al powder was used as sintering aid to prepare TiCx (x=0.50-0.61) Cermet block

[0018] Add the group powder according to the ratio: the particle size of Ti powder, sintering aid powder and C powder is 10nm to 5000nm, Ti powder, Al powder, C powder, grinding balls and absolute ethanol are weighed according to the following weight fraction ratio :

[0019] Ti powder 48 parts

[0020] Al powder 1-9 parts

[0021] C powder 7-9 parts

[0022] 325 pieces of corundum balls (the ratio of ball to material is 5:1)

[0023] Anhydrous ethanol amount

[0024] After the powder is mixed evenly, it is pressed into a ceramic biscuit with a pressure molding machine.

[0025] Sintered TiCx (x= 0.50-0.61 ) ceramic conditions are as follows:

[0026] (A) The vacuum degree of sintering is 10 -5 Pa-10 2 Pa;

[0027] (B) The sintering temperature is 1000°C-1800°C;

[0028] (C) Incubation time ranges from 10 minutes to 24 hours.

[0029] Prepared TiCx (x= 0.50-0.61 )ceramics

...

Embodiment 2

[0032] Using Al+Mg powder as sintering aid, prepared TiCx (x=0.58-0.70) ceramic block

[0033] Add the group powder according to the ratio: the particle size of Ti powder, sintering aid powder and C powder is 10nm to 5000nm, Ti powder, Al powder, C powder, grinding balls and absolute ethanol are weighed according to the following weight fraction ratio :

[0034] Ti powder 48 parts

[0035] Aluminum powder + magnesium powder 1-9 parts

[0036] C powder 7-9 parts

[0037] 325 pieces of corundum balls (the ratio of ball to material is 5:1)

[0038] Anhydrous ethanol amount

[0039] After the powder is mixed evenly, it is pressed into a ceramic biscuit with a pressure molding machine.

[0040] The conditions for preparing TiCx (x=0.58-0.7) ceramics are as follows:

[0041] (D) The vacuum degree of sintering is 10 -5 Pa-10 2 Pa;

[0042] (E) The sintering temperature is 1000°C-1800°C;

[0043] (F) The holding time is 10 minutes to 12 hours.

[0044] Can prepare TiCx (x...

Embodiment 3

[0046] Using Al powder as sintering aid to prepare TiCx (x=0.7-0.8) Cermet block

[0047] Add the group powder according to the ratio: the particle size of Ti powder, sintering aid powder and C powder is 10nm to 5000nm, Ti powder, Al powder, C powder, grinding balls and absolute ethanol are weighed according to the following weight fraction ratio :

[0048] Ti powder 48 parts

[0049] Al powder 1-9 parts

[0050] C powder 7-9 parts

[0051] 325 pieces of corundum balls (the ratio of ball to material is 5:1)

[0052] Anhydrous ethanol amount

[0053] After the powder is mixed evenly, it is pressed into a ceramic biscuit with a pressure molding machine.

[0054] The conditions for sintering TiCx (x=0.50-0.80) ceramics are as follows:

[0055] (G) The vacuum degree of sintering is 10 -5 Pa-10 2 Pa;

[0056] (H) The sintering temperature is 1000°C-1800°C;

[0057] (I) The holding time is 10 minutes to 12 hours.

[0058] Prepared TiCx (x=0.7-0.8) ceramics, see Figure...

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Abstract

The invention discloses a preparation method of a metallic titanium carbide ceramic and relates to a preparation method of powder metallurgy carbides. The method comprises the following steps: using Ti powder, C powder and a sintering auxiliary powder as a raw material, wherein the sintering auxiliary of the ceramic is Al powder; carrying out ball-milling until the particle sizes of the Ti powder, the sintering auxiliary powder and the C powder are 10-5000nm; sintering TiCx(x=0.50-0.80) ceramic under conditions that the vacuum degree is 10<-5>-10<2> Pa, the sintering temperature is 1000-1800 DEG C and the heat-preserving time of the sintered ceramic is 10 minutes to 24 hours. By using the Ti powder, the Al powder and the C powder as the raw materials, the TiCx(x=0.50-0.80) ceramic is sintered under the vacuum condition, so that the preparation method has the characteristics of simplicity in operation, low sintering temperature, low production cost and the like and has considerable economic and social benefits.

Description

technical field [0001] The invention relates to a preparation method of powder metallurgy carbide, in particular to a preparation method of metal titanium carbide ceramics. Background technique [0002] TiC is a black powder with a wide composition range, from TiC 0.47 to TiC 0.97 All are stable, with excellent properties such as high melting point, anti-oxidation, high strength, high hardness, good thermal conductivity, good chemical stability, good toughness, and chemical inertness to iron and steel metals. It is mainly used to manufacture cermets, heat-resistant alloys and hard alloys. TiC-based cermets can be used to manufacture high-temperature thermocouple protective sleeves and crucibles for melting metals used in reducing and inert atmospheres. TiC not only has unique physical properties, such as low density, high melting point, high hardness, good wear resistance, etc., but also because of its electrical and thermal conductivity, it has attracted widespread atten...

Claims

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Application Information

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IPC IPC(8): C04B35/56C04B35/626C04B35/622
Inventor 曹大力
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY