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Preparation method of niobium diselenide or niobium disulphide/carbon wear-resistant nano composite material

A nanocomposite material, niobium disulfide technology, applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of strict protection requirements for synthetic atmosphere, expensive niobium source, limited application, etc. Achieve the effect of reducing the difficulty of preparation, broadening the application prospect and reducing the cost of preparation

Inactive Publication Date: 2015-10-07
CHANGZHOU INST OF MECHATRONIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, niobium sources are expensive, and Nb, Se, NbSe 2 , NbS 2 Easy and O 2 reaction, and Nb can also react with N 2 reaction
Therefore, the protection requirements of synthetic atmosphere are strict and the cost is high, which greatly limits its application.

Method used

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  • Preparation method of niobium diselenide or niobium disulphide/carbon wear-resistant nano composite material
  • Preparation method of niobium diselenide or niobium disulphide/carbon wear-resistant nano composite material

Examples

Experimental program
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Effect test

Embodiment 1

[0017] With absolute ethanol as the dispersion medium, niobium powder, selenium powder and graphite powder were weighed at a mass ratio of Nb:Se:graphite=2:5:1, and mixed in a beaker by magnetic stirring for 2 hours.

[0018] Stand still, remove the supernatant, dry in a blast drying oven at 75°C for 8 hours, remove absolute ethanol, put the dried mixture into a stainless steel reactor and seal it.

[0019] In the tube furnace, the temperature was raised at a rate of 10°C / min, and after the temperature reached 750°C, it was kept for 2 hours, taken out, and naturally cooled to room temperature to obtain NbSe 2 / graphite composites.

[0020] NbSe 2 / Graphite composites were observed with a scanning electron microscope as figure 1 As shown, NbSe 2 The particle size of the / graphite composite material is 20-300nm, and it has many short rod-like shapes.

[0021] The prepared NbSe 2 / Graphite composite material is added to the base oil paraffin at a certain concentration (0.5-...

Embodiment 2

[0026] Using absolute ethanol as the dispersion medium, weigh niobium powder, sulfur powder and graphite powder at a mass ratio of Nb:S:graphite=2:5:1, and mix them in a beaker for 2 hours by magnetic stirring.

[0027] Stand still, remove the supernatant, dry in a blast drying oven at 75°C for 8 hours, remove absolute ethanol, put the dried mixture into a stainless steel reactor and seal it.

[0028] In the tube furnace, the temperature was raised at a rate of 10°C / min, and after the temperature reached 750°C, it was kept for 2 hours, taken out, and naturally cooled to room temperature to obtain NbS 2 / graphite composites.

[0029] Nb 2 / Graphite composites were observed with a scanning electron microscope as figure 2 As shown, NbS 2 The particle size of the / graphite composite material is 20-300nm, and it has many short rod-like shapes.

[0030] The prepared NbS 2 / Graphite composite material is added to the base oil paraffin at a certain concentration (0.3-5wt%), and ...

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Abstract

The invention relates to a preparation method of a niobium diselenide (NbSe2) or niobium disulphide (NbS2) / carbon wear-resistant nano composite material. According to the preparation method, solid-phase method is adopted to prepare the niobium diselenide or niobium disulphide / carbon wear-resistant nano composite material. The preparation method comprises following steps: niobium powder, selenium powder or sulfur powder, and graphite powder are weighed and added into a dispersion medium, and an obtained mixture is mixed via magnetic stirring; the mixture is allowed to stand, a supernatant is removed, and an obtain product is dried; the product is heated at a temperature increasing speed of 10 DEG C / min, thermal preservation reaction is carried out, the product is collected, and is subjected to natural cooling to room temperature so as to obtain the NbSe2 / graphite composite material or the NbS2 / graphite composite material. Beneficial effects are that: the niobium diselenide or niobium disulphide / carbon wear-resistant nano composite material is prepared via solid-phase method, so that pollution caused by traditional liquid-phase method is reduced, and the preparation method is green and friendly to the environment; preparation difficulty of NbSe2 or NbS2 is reduced, nano material preparation cost is reduced effectively, and application prospect of NbSe2 or NbS2 in machinery industry is improved; the prepared niobium diselenide or niobium disulphide / carbon wear-resistant nano composite material possesses excellent antifriction performance.

Description

technical field [0001] The invention relates to a preparation process of niobium diselenide or niobium disulfide / carbon wear-resistant nano composite material, which is applied to the field of strengthening and toughening the surface of molds and improving the service life of high-speed cutting tools. Background technique [0002] Niobium diselenide (NbSe 2 ) and niobium disulfide (NbS 2 ) have similar layered crystal structure and properties, NbSe 2 It is a layered solid lubricating material with both good lubricating properties and superconducting properties, and has broad application prospects in high-temperature solid lubrication. [0003] However, niobium sources are expensive, and Nb, Se, NbSe 2 , NbS 2 Easy and O 2 reaction, and Nb can also react with N 2 reaction. Therefore, the protection requirements of synthetic atmosphere are strict and the cost is high, which greatly limit its application. Contents of the invention [0004] The technical problem to be ...

Claims

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Application Information

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IPC IPC(8): C09K3/14B82Y30/00B82Y40/00
Inventor 张晔刘蓉怡张子鹏
Owner CHANGZHOU INST OF MECHATRONIC TECH
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