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Preparation method of ternary layered carbide Ti2SC (titanium sulfur carbide) material

A ternary layered, carbide technology, applied in the direction of carbide, carbon oxide/sulfur carbide, etc., to achieve the effect of lowering synthesis temperature, simplifying process and reducing material cost

Inactive Publication Date: 2013-08-21
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In summary, regarding Ti 2 There are many articles on SC theoretical research and calculation, but about the use of elements to synthesize Ti 2 There are almost no reports on the method of SC, especially the synthesis under high temperature and high pressure conditions.

Method used

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  • Preparation method of ternary layered carbide Ti2SC (titanium sulfur carbide) material

Examples

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Effect test

Embodiment 1

[0021] A kind of ternary layered carbide Ti 2 The preparation method of SC material, using Al as an auxiliary agent to prepare dense Ti by high temperature and high pressure synthesis method 2 SC material, its raw materials include Ti powder, S powder, C powder and Al powder, the molar ratio of the four raw materials is Ti:S:C:Al=2:1.2:1:0.1, the specific steps are as follows:

[0022] (1) Weighing: Weigh Ti powder, S powder, C powder and Al powder, and the molar ratio of the four raw materials is Ti:S:C:Al=2:1.2:1:0.1;

[0023] (2) Mix the weighed raw material powder in alcohol evenly, dry it, and put it into a steel mold for pre-pressing;

[0024] (3) Sintering: Put the formed sample into a pyrophyllite mold, then put it into a high temperature and high pressure furnace for sintering, the heating rate is 150°C / min, the sintering temperature is 1400°C, the pressure is 4GPa, hold for 1h, and then cool naturally with the furnace , the ternary layered carbide Ti can be obtaine...

Embodiment 2

[0028] A kind of ternary layered carbide Ti 2 The preparation method of SC material, using Al as an auxiliary agent to prepare dense Ti by high temperature and high pressure synthesis method 2 SC material, its raw materials include Ti powder, S powder, C powder and Al powder, the molar ratio of the four raw materials is Ti:S:C:Al=2:1.0:1:0.1, the specific steps are as follows:

[0029] (1) Weighing: Weigh Ti powder, S powder, C powder and Al powder. The molar ratio of the four raw materials is Ti:S:C:Al=2:1.0:1:0.1;

[0030](2) Mix the weighed raw material powder in alcohol evenly, dry it, and put it into a steel mold for pre-pressing;

[0031] (3) Sintering: Put the formed sample into a pyrophyllite mold, and then put it into a high-temperature and high-pressure furnace for sintering. The heating rate is 100°C / min, the sintering temperature is 1200°C, the pressure is 6GPa, and the temperature is kept for 10 minutes, and then naturally cooled with the furnace , the ternary l...

Embodiment 3

[0034] A kind of ternary layered carbide Ti 2 The preparation method of SC material, using Al as an auxiliary agent to prepare dense Ti by high temperature and high pressure synthesis method 2 SC material, its raw materials include Ti powder, S powder, C powder and Al powder, the molar ratio of the four raw materials is Ti:S:C:Al=2:1.1:1:0.2, and the specific steps are as follows:

[0035] (1) Weighing: Weigh Ti powder, S powder, C powder and Al powder, and the molar ratio of the four raw materials is Ti:S:C:Al=2:1.1:1:0.2;

[0036] (2) Mix the weighed raw material powder in alcohol evenly, dry it, and put it into a steel mold for pre-pressing;

[0037] (3) Sintering: Put the formed sample into a pyrophyllite mold, and then put it into a high-temperature and high-pressure furnace for sintering. The heating rate is 100°C / min, the sintering temperature is 1300°C, the pressure is 4GPa, and the temperature is kept for 30 minutes, and then naturally cooled with the furnace , the ...

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Abstract

The invention relates to a preparation method of a ternary layered carbide Ti2SC (titanium sulfur carbide) material. Al (aluminum) is used as an assistant, and a high-temperature high-pressure synthesis method is used for preparing a compact Ti2SC material. Raw materials include Ti (titanium) powder, S (sulfur) powder, C (carbon) powder and Al powder, and the mol ratio of the four raw materials is as follows: Ti: S: C: Al=2: (1-1.4): 1: (0.1-0.2). The Ti2SC block material synthesized by the method is compact in structure, and the content of Ti2SC is more than 80 percent by weight; Al is used as the assistant, so that the melting point can be lowered; and by adopting the high-temperature high-pressure sintering method, the volatilization of the S powder can be maximally inhibited, and the Ti2SC material can be rapidly sintered and synthesized.

Description

technical field [0001] The invention relates to the field of novel structural materials, in particular to a ternary layered carbide Ti 2 Preparation method of SC material. Background technique [0002] Ti 2 SC as layered compound M n+1 AX n (where "M" stands for early transition elements, "A" stands for a main group element, "X" stands for C or N elements, n=1, 2 or 3), and has excellent properties of both metals and ceramics , like metal, has good thermal shock resistance, electrical and thermal conductivity, high temperature and easy plasticity, especially strong damage resistance and good machinability; like ceramics, it has good elasticity and rigidity, light weight, fatigue resistance and high temperature resistance. These excellent properties make them attractive for many applications, such as high-temperature structural materials. And Ti 2 SC is the smallest value of lattice constant c, and S is a non-metallic element, which makes Ti 2 SC has many special excel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/26C01B32/907
Inventor 宋京红涂勇威梅炳初朱文彬
Owner WUHAN UNIV OF TECH
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