Novel method for synthesizing Ti2SC ceramic by microwave heating

Abstract

The invention relates to a preparation method of Ti2SC ceramic by microwave synthesis, which is characterized by comprising the following steps: taking titanium powder, titanium disulfide powder and graphite powder in a mole ratio of (2.5-3):3:(1.0-1.2), evenly mixing, pelleting, and carrying out microwave heating on the pellet material under the protection of inert gas which can not generate chemical reaction on the raw material and reactant, thereby synthesizing the high-purity Ti2SC ceramic. The method can be used for quickly preparing the Ti2SC ceramic powder, greatly reduces the reaction temperature and reaction time, enhances the efficiency by tens of times as compared with the traditional Ti2SC ceramic preparation method, and obtains the favorable single-phase sample.

Description

technical field

[0001] The invention provides a method for preparing microwave-synthesized inorganic ceramic materials, in particular to a microwave-synthesized Ti 2 An SC ceramic material belongs to the field of preparation of non-oxide ceramics. Background technique

[0002] Ti 2 SC is M n+1 AX n (n=1,2,3) A member of the "211" phase family in ternary layered compounds, it belongs to the hexagonal crystal system, it has excellent high thermal conductivity and high electrical conductivity similar to metals, and has better corrosion resistance performance. At the same time Ti 2 SC also has the high strength of ceramics and good high temperature oxidation resistance. Therefore, Ti 2 As a high-temperature anti-oxidation and corrosion-resistant ceramic component and protective coating, SC has broad application prospects in aerospace, nuclear industry, transportation, petrochemical and metallurgy and other fields. In the whole MAX phase family Ti 2 SC has the characteri...

Examples

Embodiment 1

[0017] Using titanium powder, titanium disulfide powder and graphite powder as raw materials, according to Ti:TiS 2 :C=(2.5~3):3:(1.0~1.2):2 The molar ratio is weighed, the powder is mixed evenly, pressed into a disc, and then the disc is heated in the cavity of the microwave heating device, and the reaction Under the protection of argon gas (argon gas flow rate 60~100ml / min), the sintering time is 15 minutes, and the sintering temperature is 800°C, and Ti can be prepared. 2 SC material.

Embodiment 2

[0019] Using titanium powder, titanium disulfide powder and graphite powder as raw materials, according to Ti:TiS 2 :C=(2.5~3):3:(1.0~1.2):2 The molar ratio is weighed, the powder is mixed evenly, pressed into a disc, and then the disc is heated in a microwave heating device, and the reaction is carried out under argon Ti 2 SC material.

Embodiment 3

[0021] Using titanium powder, titanium disulfide powder and graphite powder as raw materials, according to Ti:TiS 2 :C=(2.5~3):3:(1.0~1.2):2 The molar ratio is weighed, the powder is mixed evenly, pressed into a disc, and then the disc is heated in a microwave heating device, and the reaction is carried out under argon Under the protection of gas (argon gas flow rate 60~100ml / min), the sintering power is 1100°C, and the sintering time is 8 minutes, and Ti 2 SC material.

technical field

[0001] The invention provides a method for preparing microwave-synthesized inorganic ceramic materials, in particular to a microwave-synthesized Ti 2 An SC ceramic material belongs to the field of preparation of non-oxide ceramics. Background technique

[0002] Ti 2 SC is M n+1 AX n (n=1,2,3) A member of the "211" phase family in ternary layered compounds, it belongs to the hexagonal crystal system, it has excellent high thermal conductivity and high electrical conductivity similar to metals, and has better corrosion resistance performance. At the same time Ti 2 SC also has the high strength of ceramics and good high temperature oxidation resistance. Therefore, Ti 2 As a high-temperature anti-oxidation and corrosion-resistant ceramic component and protective coating, SC has broad application prospects in aerospace, nuclear industry, transportation, petrochemical and metallurgy and other fields. In the whole MAX phase family Ti 2 SC has the characteri...

Examples

Embodiment 1

[0017] Using titanium powder, titanium disulfide powder and graphite powder as raw materials, according to Ti:TiS 2 :C=(2.5~3):3:(1.0~1.2):2 The molar ratio is weighed, the powder is mixed evenly, pressed into a disc, and then the disc is heated in the cavity of the microwave heating device, and the reaction Under the protection of argon gas (argon gas flow rate 60~100ml / min), the sintering time is 15 minutes, and the sintering temperature is 800°C, and Ti can be prepared. 2 SC material.

Embodiment 2

[0019] Using titanium powder, titanium disulfide powder and graphite powder as raw materials, according to Ti:TiS 2 :C=(2.5~3):3:(1.0~1.2):2 The molar ratio is weighed, the powder is mixed evenly, pressed into a disc, and then the disc is heated in a microwave heating device, and the reaction is carried out under argon Ti 2 SC material.

Embodiment 3

[0021] Using titanium powder, titanium disulfide powder and graphite powder as raw materials, according to Ti:TiS 2 :C=(2.5~3):3:(1.0~1.2):2 The molar ratio is weighed, the powder is mixed evenly, pressed into a disc, and then the disc is heated in a microwave heating device, and the reaction is carried out under argon Under the protection of gas (argon gas flow rate 60~100ml / min), the sintering power is 1100°C, and the sintering time is 8 minutes, and Ti 2 SC material.

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