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VN-AgMoS2 composite material with wide temperature range self-lubricating performance and preparation method of VN-AgMoS2 composite material

A composite material and self-lubricating technology, which is applied in the wide temperature range self-lubricating VN-AgMoS2 composite material and its preparation field, to achieve the effect of tight combination, less equipment investment and uniform structure

Active Publication Date: 2020-11-20
NINGBO KANGQIANG MICRO ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to provide a VN-Ag / MoS with excellent wide temperature range self-lubricating properties 2 Composite material and its preparation method to solve the wear resistance and lubrication requirements of existing components under wide temperature range conditions

Method used

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  • VN-AgMoS2 composite material with wide temperature range self-lubricating performance and preparation method of VN-AgMoS2 composite material
  • VN-AgMoS2 composite material with wide temperature range self-lubricating performance and preparation method of VN-AgMoS2 composite material
  • VN-AgMoS2 composite material with wide temperature range self-lubricating performance and preparation method of VN-AgMoS2 composite material

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preparation example Construction

[0029] A method for preparing a nickel-based self-lubricating composite material in a wide temperature range, comprising the following steps:

[0030] 1) Weighing 70-90% VN powder, 5-15% silver powder and 5-15% molybdenum disulfide powder according to the mass ratio to obtain the original ingredients;

[0031] 2) Use a planetary ball mill to mechanically mix the original ingredients to obtain a uniform mixed powder;

[0032] 3) Put the mixed powder into the graphite grinding tool for cold pressing;

[0033] 4) Under vacuum protection, the graphite abrasive tool with mixed powder was subjected to high-temperature hot-pressing sintering to obtain VN-Ag / MoS 2 composite material.

[0034] The VN powder, Ag powder and MoS 2 All are purchased from the market, and the average particle sizes are <15 μm, <1 μm and <10 μm respectively.

[0035] As a further improvement of the above preparation method, the ball-to-material ratio in the ball milling process in step 2) is 5:1-10:1, the...

Embodiment 1

[0039] Example 1 A VN-Ag / MoS with excellent wide temperature range self-lubricating properties 2 Composite material and preparation method thereof, carry out according to the following steps:

[0040] (1) According to VN powder mass fraction of 70%, Ag / MoS 2 The mass fraction is 15% respectively, and weighs 70 grams of vanadium nitride powder and Ag / MoS 2 15 grams each of the powders to obtain the original ingredients, wherein the average particle size of the VN powder is 2 The average particle size of the powder is <10 μm.

[0041] (2) Put the original ingredients in the planetary ball mill, according to the ratio of ball to material 10:1, the speed is 200r / min, ball milling and mixing for 5 hours to obtain the evenly mixed sintering ingredients;

[0042](3) Put the sintering ingredients into the graphite mold, first perform cold pressing at a pressure of 10MPa, and then perform hot pressing sintering in a vacuum environment, where the sintering temperature is 1650°C, the h...

Embodiment 2

[0044] Example 2 A VN-Ag / MoS with excellent wide temperature range self-lubricating properties 2 Composite material and preparation method thereof, carry out according to the following steps:

[0045] (1) According to VN powder mass fraction of 80%, Ag / MoS 2 The mass fraction of each is 10% of the proportion of ingredients, weighing 80 grams of vanadium nitride powder and Ag / MoS 2 10 grams each of the powders to obtain the original ingredients, wherein the average particle size of VN powder2 The average particle size of the powder is <10 μm.

[0046] (2) Put the original ingredients in the planetary ball mill, according to the ratio of ball to material 10:1, the speed is 200r / min, ball milling and mixing for 5 hours to obtain the evenly mixed sintering ingredients;

[0047] (3) Put the sintering ingredients into the graphite mold, first perform cold pressing at a pressure of 10MPa, and then perform hot pressing sintering in a vacuum environment, where the sintering temperatu...

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Abstract

The invention discloses a VN-AgMoS2 composite material with wide temperature range self-lubricating performance, and relates to the field of self-lubricating composite materials. The VN-AgMoS2 composite material consists of the following components, by mass percent, 70-90% of VN powder, 5-15% of silver powder and 5-15% of molybdenum disulfide powder. A vanadium nitride is selected as a matrix of the composite material, silver / molybdenum disulfide is selected as a composite lubricating agent, vanadium nitride ceramics provide excellent wide temperature range abrasion resistance, while room temperature lubrication action comes from the molybdenum disulfide lubricating agent of a layer structure, and medium-high temperature lubrication action comes from an oxide lubricating agent produced in the process of high temperature friction, such as molybdenum oxide, silver molybdate acid and silver vanadate. The VN-AgMoS2 composite material is applicable to a large number of machine parts in extreme working conditions such as high temperature, high load and high vacuum in aerospace, energy, automobile and machine manufacturing industries, and has broad application prospects.

Description

technical field [0001] The invention relates to the field of self-lubricating composite materials, more specifically, to a wide temperature range self-lubricating VN-AgMoS 2 Composite materials and methods for their preparation. Background technique [0002] In aerospace, energy, automobile, machinery manufacturing and other industries, there are a large number of machine parts working under extreme working conditions such as high temperature, high load and high vacuum, which will affect the wear resistance, corrosion resistance, fatigue resistance and high temperature performance of materials. More and more stringent requirements have been put forward. Lubricating oil and grease Conventional lubricating materials are prone to failure and volatilization in high temperature environments, and it is difficult to exert effective lubrication under the conditions of dust and high impact strength, resulting in the equipment being in a state of lean oil or dry friction, causing dam...

Claims

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Application Information

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IPC IPC(8): C22C29/16C22C1/05C22C1/10
CPCC22C1/051C22C29/005C22C29/16
Inventor 郑芳
Owner NINGBO KANGQIANG MICRO ELECTRONICS TECH CO LTD
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