CN111575570B - Preparation method of material with self-lubricating property and self-regulating and controlling function of lubrication by taking LiPbAg-BC as regulator - Google Patents

Abstract

The invention discloses a preparation method of a material with self-lubricating property and self-regulating function of lubrication by taking LiPbAg-BC as a regulator, which comprises the following steps: the invention relates to a self-lubricating composite material, which is prepared by using TiNiAlZrNbSiMoY as a matrix material, AuCdSe-MoO as a solid lubricating phase and LiPbAg-BC as a regulating agent, preparing TiNiAlZrNbSiMoY and AuCdSe-MoO spherical structure powder by using an ultrahigh-temperature high-pressure gas injection technology, preparing a TiNiAlZrNbSiMoY-AuCdSe-MoO self-lubricating material with a microporous runner structure by using a metal laser sintering molding technology, and infiltrating the regulating agent into a microporous runner by using vacuum pressure.

Description

Preparation method of material with self-lubricating property and self-regulating and controlling function of lubrication by taking LiPbAg-BC as regulator

Technical Field

The invention relates to a preparation method of a material which takes LiPbAg-BC as a regulator and has self-lubricating property and self-regulating function of lubrication.

Background

In the working process of mechanical parts, the paired pairs in mutual contact are always in the states of bearing load and suffering abrasion [ current research situation of self-lubricating material [ J ], ormosia poplar love peak, hot processing technology, 2018, (2): 5-10, and the bearing and abrasion of mechanical parts are important factors influencing the working performance, working quality, mechanical efficiency and service life of the parts [ solid self-lubricating material and research trend [ J ], Yangweifeng, lubrication and sealing, 2007, 32(12): 118-. The TiNiAlZrNbSiMoY serving as a novel alloy material has the advantages of compact structure, high strength, good toughness, excellent corrosion resistance, high fatigue resistance and the like, still has good mechanical properties and mechanical properties under extreme working conditions such as high temperature, high load, strong radiation and the like, and can be used for the production of automobile parts, aerospace engines, high-precision parts and other advanced manufacturing industries. However, the TiNiAlZrNbSiMoY alloy has poor friction and wear resistance under extreme service conditions, and the wide application of the TiNiAlZrNbSiMoY alloy in the field of mechanical industry is limited. The TiNiAlZrNbSiMoY-AuCdSe-MoO self-lubricating composite material with the micropore runner structure is prepared by adopting a metal laser sintering technology, a LiPbAg-BC regulating agent is filled in the micropore runner by utilizing a vacuum pressure infiltration technology, and the TiNiAlZrNbSiMoY base material still has good tribological performance and regulating and controlling functions under the extreme service working condition by virtue of the good self-lubricating property of AuCdSe-MoO and the outstanding lubricating and controlling function of LiPbAg-BC. The preparation method of the material with the self-lubricating property and the self-regulating and controlling function of lubrication by taking the LiPbAg-BC as the regulator is simple and easy to operate.

Disclosure of Invention

The invention relates to a scientific technology and key scientific problems to be solved, which can promote the wide application of the TiNiAlZrNbSiMoY-based material in advanced scientific fields such as aerospace and the like, make up the defects of the prior lubricating technology, and provide a novel self-lubricating material design idea and a manufacturing method, so that the prepared TiNiAlZrNbSiMoY-based self-lubricating material has excellent tribological properties, and the preparation method is simple and easy to control.

The invention adopts the technical scheme that TiNiAlZrNbSiMoY is used as a matrix material, AuCdSe-MoO is used as a solid lubricating phase, LiPbAg-BC is used as a regulator, TiNiAlZrNbSiMoY and AuCdSe-MoO spherical structure powder is prepared by using an ultrahigh-temperature and high-pressure gas injection technology, a TiNiAlZrNbSiMoY-AuCdSe-MoO self-lubricating material with a micropore runner structure is prepared by using a metal laser sintering molding technology, the regulator is infiltrated in a micropore runner by using vacuum pressure so as to realize the lubrication of the AuCdSe-MoO solid lubrication relative to the TiNiAlZrNbSiMoY-based composite material, and the regulator LiPbAg-BC regulates the lubricity of the TiNiAlZrNbSiMoY-AuCdSe-MoO-based composite material.

The mass ratio (wt.%) of the matrix material TiNiAlZrNbSiMoY to the solid lubricating phase AuCdSe-MoO is 1 (0.2-0.9), wherein the mass ratio (wt.%) of the elements of the matrix material TiNiAlZrNbSiMoY is 10:16:6:5:3:0.45:0.4: 0.3; the mass ratio (wt.%) of AuCdSe to MoO in the solid lubricating phase is 1 (0.2-0.5), the mass ratio (wt.%) of AuCdSe elements is 3:2 (3-5), the mass ratio (wt.%) of MoO elements is 1 (2-5), LiPbAg-BC is a lubricating property regulator of a TiNiAlZrNbSiMoY-based self-lubricating material, the mass ratio (wt.%) of the matrix material TiNiAlZrNbSiMoY to the regulator LiPbAg-BC is 2 (0.1-0.3), the mass ratio (wt.%) of LiPbAg to BC is 20:3, the atomic ratio (at.%) of LiPbAg is 2:3 (5-8), and the atomic ratio (at.%) of BC is 2 (1-3), and the AuPbAg-BC self-lubricating material is prepared by using an ultrahigh-temperature high-pressure gas injection technology, laser sintering forming and a vacuum pressure infiltration method.

Vibrating and mixing Ti, Ni, Al, Zr, Nb, Si, Mo and Y powder, and preparing microcosmic spherical powder by using an ultrahigh-temperature high-pressure gas injection technology, wherein the microcosmic spherical powder is used as original powder of a TiNiAlZrNbSiMoY matrix material; the preparation method comprises the steps of mixing layered MoO powder into Au, Cd and Se powder, preparing a spherical solid lubricating phase AuCdSe-MoO by using an ultrahigh-temperature high-pressure gas injection technology, preparing a TiNiAlZrNbSiMoY-AuCdSe-MoO self-lubricating composite material with a microporous flow passage by using laser sintering molding, uniformly mixing nano-particles BC with Li, Pb and Ag powder to obtain a LiPbAg-BC regulating agent, infiltrating the LiPbAg-BC regulating agent into the microporous flow passage by using vacuum pressure, and regulating and controlling the tribological performance of the self-lubricating material, so that the self-lubricating composite material taking the AuCdSe-MoO as the solid lubricating phase LiPbAg-BC as the regulating agent TiNiAlZrNbSiMoY as a matrix is obtained.

The preparation method of the material with the self-lubricating property and the self-regulating and controlling function of lubrication by taking the LiPbAg-BC as the regulator comprises the following steps:

(1) preparing materials and mixing materials: weighing Ti, Al, Zr, Nb, Si, Mo and Y elementary powder according to the proportion, preparing a TiNiAlZrNbSiMoY matrix, Au, Cd, Se and MoO powder, preparing an AuCdSe-MoO solid lubricating phase, Li, Pb, Ag and BC powder, preparing a LiPbAg-BC regulating agent, and respectively carrying out vibration mixing on the matrix material, the solid lubricating phase and the regulating agent by using a vibration mixer, wherein the vibration frequency is 10-90Hz, the vibration force is 7000-plus 15000N, and the vibration time is 10-90 min;

(2) spherical powder preparation: preparing Ti, Ni, Al, Zr, Nb, Si, Mo and Y powder into TiNiAlZrNbSiMoY spherical powder by using an ultrahigh-temperature high-pressure gas injection technology; preparing AuCdSe-MoO solid lubricating phase spherical powder from Au, Cd, Se and MoO powder;

(3) preparing a micropore flow passage: utilizing the TiNiAlZrNbSiMoY and AuCdSe-MoO spherical powder obtained in the step (2) to perform laser sintering molding on the TiNiAlZrNbSiMoY-AuCdSe-MoO self-lubricating composite material with the micropore runner structure;

(4) preparing materials: utilizing the LiPbAg-BC mixed powder obtained in the step (1) to perform vacuum pressure infiltration on the microporous flow passage to obtain a self-lubricating composite material taking AuCdSe-MoO as a solid lubricating phase LiPbAg-BC as a regulator and TiNiAlZrNbSiMoY as a matrix;

the particle size of the elementary powder of Ti, Al, Zr, Nb, Si, Mo, Y, Au, Cd, Se, Li, Pb and Ag in the step (1) is 30-60 μm, the purity is 95.50-99.99%, the thickness of the layered MoO lubricant is 45-115nm, the particle size of the nano-particle BC is 50-120nm, the ultra-high temperature and high pressure gas injection technology in the step (2) is used for preparing the spherical powder of AuCdSe-MoO and TiNiAlZrNbSiMoY, the smelting temperature is 1700 ℃, the temperature measurement mode is infrared temperature measurement, and the vacuum degree is 3.8-6.0 × 10^-2Pa, argon as protective gas, 10-15MPa of argon pressure and 600m of highest gas flow³H, the cooling liquid is ultrapure water, and the flow rate of the ultrapure water is 20-30m³/h；

The TiNiAlZrNbSiMoY matrix material in the step (3) has the laser sintering power of 95-130W, the scanning mode is line scanning, the space is 0.06-0.20 mu m, the linear velocity is 4000-5500mm/s, the powder feeding rate is 10-15g/min, and the cladding thickness is 5-15 mu m; the laser sintering power of the AuCdSe-MoO solid lubricating phase is 110-120W, the scanning mode is linear scanning, the speed is 4500-5500mm/s, the spacing is 0.04-0.12 mu m, the powder feeding rate is 5-10g/min, and the single-layer cladding thickness is 8-15 mu m;

infiltrating the regulating agent LiPbAg-BC in the microporous flow passage under the vacuum pressure in the step (4), wherein the infiltration temperature is 1300-^-2Pa, the applied pressure is 0.6-0.9Mpa, and the filling rate of the regulator LiPbAg-BC is 95.50-99.95%.

Compared with the prior art, the invention has the beneficial effects that:

1. the material prepared by the invention, which takes LiPbAg-BC as a regulating agent and has self-lubricating property and self-regulating function of lubrication, has excellent antifriction and antiwear performance, small friction coefficient, low wear rate and stable tribology performance under sudden change of working conditions.

2. The material has the advantages of regular distribution and uniform size of microporous flow channels, good connectivity between single holes and multiple holes, high filling rate in the microporous flow channels of the regulating agent, good self-lubricating property and self-lubricating and controlling function.

3. The material with the self-lubricating property and the self-regulating and controlling function of lubrication by taking LiPbAg-BC as the regulator has the advantages of simple preparation method, simple and easily controlled process, high efficiency, stable process parameters, easily controlled operation process, stable result, moderate cost of selected raw materials, environment-friendly and pollution-free materials, and can be used for large-scale mechanized and batch production.

4. The TiNiAlZrNbSiMoY-based self-lubricating composite material prepared by the laser sintering molding technology has the advantages of fine crystal grains, compact tissue structure, higher grain orientation consistency, excellent mechanical property and thermodynamic property, good lubricating effect under the condition of extreme service working conditions and good regulation and control function under the condition of sudden change of the working conditions.

5. Research on the TiNiAlZrNbSiMoY-based self-lubricating material taking AuCdSe-MoO as a solid lubricating phase LiPbAg-BC as a regulator and the preparation method thereof can expand the application of the TiNiAlZrNbSiMoY material in the industrial fields of aerospace and aviation and the like and improve the tribological performance of the TiNiAlZrNbSiMoY material under extreme working conditions, and has important scientific significance and engineering value for improving solid lubrication, regulation, application and the like under the extreme working conditions.

Drawings

FIG. 1 is a flow chart of a preparation process of a material with self-lubricating property and self-regulating function by using LiPbAg-BC as a regulator.

FIG. 2 is the morphology and elemental distribution of a spherical powder AuCdSe-MoO electronic probe prepared in example 1 of the present invention.

FIG. 3 is a scanning electron microscope morphology of a microporous flow channel of a TiNiAlZrNbSiMoY-AuCdSe-MoO self-lubricating composite material sintered by a metal laser in embodiment 2 of the invention.

FIG. 4 is a scanning electron microscope topography of a vacuum pressure infiltration LiPbAg-BC regulating agent in a micropore flow channel filling state in example 2 of the invention.

FIG. 5 is a scanning electron microscope topography of a cross-sectional structure of a material with self-lubricating properties and self-regulating lubrication function using LiPbAg-BC as a regulator, prepared in example 2 of the present invention.

Fig. 6 and 7 are graphs showing friction coefficient and wear rate of a material prepared in embodiments 1, 2 and 3 and having self-lubricating property and self-regulating function of lubrication by using libag-BC as a regulating agent.

FIG. 8 is a topography of a material wear scar electronic probe prepared in example 3 of the present invention and having self-lubricating properties and self-regulating function of lubrication using LiPbAg-BC as a regulating agent.

Fig. 9 is a scanning electron microscope image of the surface field emission of the frictional wear of the material with self-lubricating property and self-regulating function of lubrication by using the lipag-BC as the regulating agent in example 3 of the present invention.

Detailed Description

For better understanding of the present invention, the content of the present invention is further illustrated by referring to specific examples according to a flow chart of a preparation process of a material with self-lubricating property and self-lubricating control function using LiPbAg-BC as a regulator shown in FIG. 1, wherein the test conditions uniformly select a load of 10-12N, a sliding speed of 0.2-0.5m/s, a sliding time of 80min, and a friction radius of 3-5mm, but the present invention is not limited to the following examples.

Example 1

A material with a self-lubricating property and a self-lubricating function by taking LiPbAg-BC as a regulator has the mass ratio (wt.%) of a matrix TiNiAlZrNbSiMoY to a solid lubricating phase AuCdSe-MoO of 5: 1. The matrix material element mass ratio (wt.%) is 10:16:6:5:3:0.45:0.4: 0.3; the solid lubricating phase AuCdSe to MoO mass ratio (wt.%) was 5:1, the AuCdSe element mass ratio (wt.%) was 3:2:3, and the MoO element mass ratio (wt.%) was 1: 2. The mass ratio (wt.%) of the matrix material to the conditioning agent LiPbAg-BC is 2:0.1, the mass ratio (wt.%) of LiPbAg to BC is 20:3, the atomic ratio (at.%) of LiPbAg is 2:3:5, and the atomic ratio (at.%) of BC is 2: 1;

weighing Ti, Al, Zr, Nb, Si, Mo and Y elemental powder, Au, Cd, Se and MoO powder and Li, Pb, Ag and BC powder according to a proportion, and vibrating and mixing the base material, the solid lubricating phase and the regulating agent by using a vibrating mixer, wherein the vibration frequency is 10Hz, the vibration force is 7000N, and the vibration time is 10 min;

the particle size of single substance powder of Ti, Al, Zr, Nb, Si, Mo, Y, Au, Cd, Se, Li, Pb and Ag is 30 μm, the purity is 95.50%, the thickness of layered MoO is 45nm, and the particle size of nano-particle BC is 50 nm. Preparing spherical AuCdSe-MoO and TiNiAlZrNbSiMoY powder by ultrahigh-temperature high-pressure gas injection technology, smelting at 900 deg.C, measuring temperature by infrared ray, and vacuum degree of 3.8 × 10^-2Pa, argon as protective gas, 10MPa of argon pressure and 500m of gas flow³H, the cooling liquid is ultrapure water, and the flow rate of the ultrapure water is 20m³H is used as the reference value. FIG. 2 is the morphology and the element distribution diagram of a spherical powder AuCdSe-MoO electronic probe prepared in example 1 of the present invention;

preparing a micropore runner structure on a TiNiAlZrNbSiMoY-AuCdSe-MoO self-lubricating composite material by using a laser sintering molding technology, wherein the laser sintering power of a TiNiAlZrNbSiMoY matrix material is 95-130W, the scanning mode is line scanning, the space is 0.06 mu m, the linear velocity is 4000mm/s, the powder feeding rate is 10g/min, and the cladding thickness is 5 mu m; the laser power of the AuCdSe-MoO solid lubricating phase is 110W, the scanning mode is line scanning, the speed is 4500mm/s, the spacing is 0.04 mu m, the powder feeding rate is 5g/min, and the single-layer cladding thickness is 8 mu m;

filling LiPbAg-BC in the microporous flow passage by vacuum pressure infiltration technology, wherein the infiltration temperature is 1300 ℃, the heat preservation time is 20min, the heating power is 90kW, the heating rate is 50 ℃/min, the applied pressure is 0.6Mpa, and the vacuum degree is 0.8 multiplied by 10^{- 2}Pa, the filling rate of the regulating agent LiPbAg-BC is 95.50 percent;

tested by an HVS-1000 type digital display microhardness instrument, the self-lubricating material prepared by the embodiment and taking AuCdSe-MoO as a solid lubricating phase LiPbAg-BC as a regulator and iNiAlZrNbSiMoY as a matrix has the density of 5.42g/cm³The hardness was 5.95 GPa. At 10N, the sliding speed is 0.2m/s, the sliding time is 80min, the friction radius is 3mm, and the friction pair isThe friction coefficient and the wear rate of the G15 bearing steel are shown in FIGS. 6 and 7, which are measured under the conditions of 55% relative humidity and 250 ℃ friction environment temperature. As can be seen from FIGS. 6 and 7, the TiNiAlZrNbSiMoY-based self-lubricating composite material has a small friction coefficient (about 0.38), a small fluctuation range, and a wear rate of 3.25X 10^-5mm³/(Nm). The small friction coefficient and the low wear rate show that the material which takes the LiPbAg-BC as the regulating agent and has self-lubricating property and self-regulating function of lubrication has good lubricating property and excellent regulating function.

Example 2

A material with a self-lubricating property and a self-lubricating control function by taking LiPbAg-BC as a regulator has a mass ratio (wt.%) of a matrix to a solid lubricating phase of AuCdSe-MoO of 1: 2. The matrix material element mass ratio (wt.%) is 10:16:6:5:3:0.45:0.4: 0.3; the solid lubricating phase mass ratio (wt.%) of AuCdSe to MoO was 10:3, the mass ratio (wt.%) of AuCdSe elements was 3:2:4, and the mass ratio (wt.%) of MoO elements was 1: 3. The mass ratio (wt.%) of the matrix material to the regulator LiPbAg-BC is 10:1, the mass ratio (wt.%) of LiPbAg to BC is 20:3, the atomic ratio (at.%) of LiPbAg is 2:3:6, and the atomic ratio (at.%) of BC is 1: 1;

weighing Ti, Al, Zr, Nb, Si, Mo and Y elemental powder, Au, Cd, Se and MoO powder and Li, Pb, Ag and BC powder according to a proportion, and vibrating and mixing the base material, the solid lubricating phase and the regulating agent by using a vibrating mixer, wherein the vibration frequency is 50Hz, the vibration force is 10000N, and the vibration time is 60 min;

the particle size of the selected Ti, Al, Zr, Nb, Si, Mo, Y, Au, Cd, Se, Li, Pb and Ag elementary substance powder is 45 mu m, the purity is 97.89%, the MoO thickness is 100nm, and the BC particle size is 80 nm. Respectively preparing AuCdSe-MoO and TiNiAlZrNbSiMoY spherical powders by using ultrahigh-temperature and high-pressure gas injection technology, wherein the smelting temperature is 1100 ℃, the temperature measurement mode is infrared temperature measurement, and the vacuum degree is 4.6 multiplied by 10^-2Pa, argon as protective gas, 13MPa of argon pressure and 550m of gas flow³H, the cooling liquid is ultrapure water, and the flow rate of the ultrapure water is 25m³/h；

Preparing a micropore runner structure on a TiNiAlZrNbSiMoY-AuCdSe-MoO self-lubricating composite material by using a laser sintering forming technology, wherein the laser sintering power of a TiNiAlZrNbSiMoY matrix material is 100W, the scanning mode is line scanning, the spacing is 0.12 mu m, the linear velocity is 4800mm/s, the powder feeding rate is 12.5g/min, and the cladding thickness is 13.5 mu m; the laser power of the AuCdSe-MoO solid lubricating phase is 115W, the scanning mode is line scanning, the speed is 4900mm/s, the spacing is 0.09 mu m, the powder feeding rate is 7.8g/min, and the single-layer cladding thickness is 12 mu m. FIG. 3 is a scanning electron microscope morphology of a microporous flow channel of a TiNiAlZrNbSiMoY-AuCdSe-MoO self-lubricating composite material sintered by a metal laser in embodiment 2 of the invention;

vacuum pressure infiltration of LiPbAg-BC in the microporous flow passage at 1400 deg.C for 60min with heating power of 115kW, heating rate of 85 deg.C/min and vacuum degree of 0.85 × 10^-2Pa, the applied pressure is 0.8Mpa, and the filling rate of the regulator LiPbAg-BC is 97.50. FIG. 4 is a scanning electron microscope topography of a microporous flow channel filling state of vacuum pressure infiltration of a LiPbAg-BC regulating agent in example 2 of the present invention;

through HVS-1000 type digital display microhardness instrument test, the self-lubricating material prepared by the embodiment with AuCdSe-MoO as a solid lubricating phase LiPbAg-BC as a regulator and TiNiAlZrNbSiMoY as a matrix has a compact tissue structure, and a field emission morphology diagram of the self-lubricating material section tissue structure with AuCdSe-MoO as a solid lubricating phase LiPbAg-BC as a regulator and TiNiAlZrNbSiMoY as a matrix is prepared in an embodiment 2 of the invention as shown in FIG. 5. The density was measured to be 5.53g/cm³The hardness was 6.12 GPa. Under the conditions of 11N, the sliding speed of 0.2m/s, the sliding time of 80min, the friction radius of 3mm, the counter-grinding pair of W-Co bearing steel, the relative humidity of 55%, the friction environment temperature of 300 ℃ and the like, the friction coefficient and the wear rate obtained by the test are shown in figures 6 and 7. As can be seen from FIGS. 6 and 7, the TiNiAlZrNbSiMoY-based self-lubricating composite material has a small friction coefficient (about 0.35), a small fluctuation range, and a wear rate of 3.15X 10^-5mm³And/or (Nm), which shows that the prepared TiNiAlZrNbSiMoY-based composite material has excellent tribological performance and can play a good lubricating regulation and control effect in the friction process.

Example 3

A material with a self-lubricating property and a self-lubricating function by taking LiPbAg-BC as a regulator has the mass ratio (wt.%) of a matrix TiNiAlZrNbSiMoY to a solid lubricating phase AuCdSe-MoO of 10: 9. The matrix material element mass ratio (wt.%) is 10:16:6:5:3:0.45:0.4: 0.3; the solid lubricating phase mass ratio (wt.%) of AuCdSe to MoO was 1:2, the mass ratio (wt.%) of AuCdSe elements was 3:2:5, and the mass ratio (wt.%) of MoO elements was 1: 5. The mass ratio (wt.%) of the matrix material to the modifier LiPbAg-BC is 20:3, the mass ratio (wt.%) of LiPbAg to BC is 20:3, the atomic ratio (at.%) of LiPbAg is 2:3:8, and the atomic ratio (at.%) of BC is 2: 3;

weighing Ti, Al, Zr, Nb, Si, Mo and Y elementary powder, Au, Cd, Se and MoO powder and Li, Pb, Ag and BC powder according to the proportion, and vibrating and mixing the base material, the solid lubricating phase and the regulating agent by using a vibrating mixer, wherein the vibration frequency is 90Hz, the vibration force is 15000N, and the vibration time is 90 min.

The particle size of the selected Ti, Al, Zr, Nb, Si, Mo, Y, Au, Cd, Se, Li, Pb and Ag elementary powder is 60 mu m, the purity is 99.99%, the thickness of the layered MoO is 115nm, and the particle size of the nano-particle BC is 120 nm. Respectively preparing AuCdSe-MoO and TiNiAlZrNbSiMoY spherical powders by using ultrahigh-temperature and high-pressure gas injection technology, wherein the smelting temperature is 1700 ℃, the temperature measurement mode is infrared temperature measurement, and the vacuum degree is 6.0 multiplied by 10^-2Pa, argon as protective gas, argon pressure of 15MPa, gas flow of 600m³H, the cooling liquid is ultrapure water, and the flow rate of the ultrapure water is 30m³/h；

Preparing a micropore runner structure on a TiNiAlZrNbSiMoY-AuCdSe-MoO self-lubricating composite material by using a laser sintering molding technology, wherein the laser sintering power of a TiNiAlZrNbSiMoY matrix material is 130W, the scanning mode is line scanning, the spacing is 0.20 mu m, the linear velocity is 5500mm/s, the powder feeding rate is 15g/min, and the cladding thickness is 15 mu m; the laser power of the AuCdSe-MoO solid lubricating phase is 120W, the scanning mode is line scanning, the speed is 5500mm/s, the spacing is 0.12 mu m, the powder feeding rate is 10g/min, and the single-layer cladding thickness is 15 mu m;

vacuum pressure infiltration of LiPbAg-BC in the microporous flow passage at 1500 deg.C for 90min, heating power of 130kW, heating rate of 100 deg.C/min, and vacuum degree of 0.9 × 10^-2Pa, the applied pressure is 0.9Mpa, and the filling rate of the regulator LiPbAg-BC is 99.95 percent;

tested by an HVS-1000 type digital display microhardness instrument, the self-lubricating material prepared by the embodiment and taking AuCdSe-MoO as a solid lubricating phase LiPbAg-BC as a regulator and TiNiAlZrNbSiMoY as a matrix has the density of 5.82g/cm³The hardness was 6.25 GPa. Under the conditions of 12N, sliding speed of 0.5m/s, sliding time of 80min, friction radius of 5mm, W-Co bearing steel as a counter-grinding pair, relative humidity of 55%, friction environment temperature of 500 ℃ and the like, the friction coefficient and the wear rate obtained by testing are shown in figures 6 and 7. As can be seen from FIGS. 6 and 7, the TiNiAlZrNbSiMoY-based self-lubricating composite material has a small friction coefficient (about 0.33), a small fluctuation range, and a wear rate of 2.98X 10^-5mm³/(Nm). Fig. 8 is a morphology diagram of a material wear scar electronic probe prepared in embodiment 3 of the present invention, which has self-lubricating properties and self-lubricating control functions and uses lipag-BC as a control agent. FIG. 9 is a scanning electron microscope image of the surface of the material with self-lubricating properties and self-regulating lubrication function, which is prepared in example 3 and uses LiPbAg-BC as a regulating agent, and is subjected to field emission. As shown in FIGS. 8 and 9, under the action of the AuCdSe-MoO solid lubricant and the LiPbAg-BC regulator, the smooth surface morphology of the grinding track exists between the friction pair pairs, and the TiNiAlZrNbSiMoY-based composite material can be lubricated well and regulated well.

Claims (1)

1. A preparation method of a material with self-lubricating property and self-regulating function of lubrication by taking LiPbAg-BC as a regulator comprises the following steps: the method is characterized in that: the method comprises the following steps of taking TiNiAlZrNbSiMoY as a matrix material, AuCdSe-MoO as a solid lubricating phase and LiPbAg-BC as a regulator, preparing TiNiAlZrNbSiMoY and AuCdSe-MoO spherical structure powder by utilizing an ultrahigh-temperature high-pressure gas injection technology, preparing a TiNiAlZrNbSiMoY-AuCdSe-MoO self-lubricating material with a micropore runner structure by virtue of a metal laser sintering molding technology, infiltrating the regulator into a micropore runner by utilizing vacuum pressure so as to realize the lubrication of the AuCdSe-MoO solid lubrication relative to a TiNiAlZrNbSiMoY-based composite material, and regulating the lubricating performance of the TiNiAlZrNbSiMoY-AuCdSe-MoO-based composite material by using the regulator LiPbAg-BC;

the mass ratio of the matrix material TiNiAlZrNbSiMoY to the solid lubricating phase AuCdSe-MoO is 1 (0.2-0.9), wherein the mass ratio of the elements of the matrix material TiNiAlZrNbSiMoY is 10:16:6:5:3:0.45:0.4: 0.3; the mass ratio of AuCdSe to MoO is 1 (0.2-0.5), the mass ratio of AuCdSe elements is 3:2 (3-5), the mass ratio of MoO elements is 1 (2-5), LiPbAg-BC is a TiNiAlZrNbSiMoY-based lubricating material lubricating property regulator, the mass ratio of a matrix material TiNiAlZrNbSiMoY to a regulator LiPbAg-BC is 2 (0.1-0.3), wherein the mass ratio of LiPbAg to BC is 20:3, the atomic ratio of LiPbAg (at.%) is 2:3 (5-8), the atomic ratio of BC (at.%) is 2 (1-3), and the self-lubricating material taking AuCdSe-MoO as a solid phase, LiPbAg-BC as a regulator and TiAlZrSiMoY as a matrix is prepared by utilizing an ultrahigh-temperature and high-pressure gas injection technology, a laser sintering molding method and a vacuum pressure infiltration method;

vibrating and mixing Ti, Ni, Al, Zr, Nb, Si, Mo and Y powder, and preparing microcosmic spherical powder by using an ultrahigh-temperature high-pressure gas injection technology, wherein the microcosmic spherical powder is used as original powder of a TiNiAlZrNbSiMoY matrix material; mixing layered MoO powder into Au, Cd and Se powder, preparing a spherical solid lubricating phase AuCdSe-MoO by using an ultrahigh-temperature high-pressure gas injection technology, preparing a TiNiAlZrNbSiMoY-AuCdSe-MoO self-lubricating composite material with a microporous flow passage by using laser sintering molding, uniformly mixing nano-particles BC with Li, Pb and Ag powder to obtain a LiPbAg-BC regulating agent, infiltrating the LiPbAg-BC regulating agent into the microporous flow passage by using vacuum pressure, and regulating and controlling the tribological performance of the self-lubricating material, thereby obtaining the self-lubricating composite material taking the AuCdSe-MoO as a solid lubricating phase LiPbAg-BC as a regulating agent TiNiAlZrNbSiMoY as a matrix;

the preparation method of the material with the self-lubricating property and the self-regulating and controlling function of lubrication by taking LiPbAg-BC as a regulator comprises the following steps:

(1) preparing materials and mixing materials: weighing Ti, Al, Zr, Nb, Si, Mo and Y elementary powder according to the proportion, preparing a TiNiAlZrNbSiMoY matrix, Au, Cd, Se and MoO powder, preparing an AuCdSe-MoO solid lubricating phase, Li, Pb, Ag and BC powder, preparing a LiPbAg-BC regulating agent, and respectively carrying out vibration mixing on the matrix material, the solid lubricating phase and the regulating agent by using a vibration mixer, wherein the vibration frequency is 10-90Hz, the vibration force is 7000-plus 15000N, and the vibration time is 10-90 min;

(2) spherical powder preparation: preparing Ti, Ni, Al, Zr, Nb, Si, Mo and Y powder into TiNiAlZrNbSiMoY spherical powder by using an ultrahigh-temperature high-pressure gas injection technology; preparing AuCdSe-MoO solid lubricating phase spherical powder from Au, Cd, Se and MoO powder;

(3) preparing a micropore flow passage: utilizing the TiNiAlZrNbSiMoY and AuCdSe-MoO spherical powder obtained in the step (2) to perform laser sintering molding on the TiNiAlZrNbSiMoY-AuCdSe-MoO self-lubricating composite material with the micropore runner structure;

(4) preparing materials: utilizing the LiPbAg-BC mixed powder obtained in the step (1) to perform vacuum pressure infiltration on the microporous flow passage to obtain a self-lubricating composite material taking AuCdSe-MoO as a solid lubricating phase LiPbAg-BC as a regulator and TiNiAlZrNbSiMoY as a matrix;

the particle size of the elementary powder of Ti, Al, Zr, Nb, Si, Mo, Y, Au, Cd, Se, Li, Pb and Ag in the step (1) is 30-60 mu m, the purity is 95.50-99.99%, the thickness of the layered MoO lubricant is 45-115nm, and the particle size of the nano-particle BC is 50-120 nm;

the ultra-high temperature and high pressure gas injection technology in the step (2) is used for preparing the spherical powders of AuCdSe-MoO and TiNiAlZrNbSiMoY, the smelting temperature is 900-^-2Pa, argon as protective gas, 10-15MPa of argon pressure and 600m of highest gas flow³H, the cooling liquid is ultrapure water, and the flow rate of the ultrapure water is 20-30m³/h；

The TiNiAlZrNbSiMoY matrix material in the step (3) has the laser sintering power of 95-130W, the scanning mode is line scanning, the space is 0.06-0.20 mu m, the linear velocity is 4000-5500mm/s, the powder feeding rate is 10-15g/min, and the cladding thickness is 5-15 mu m; the laser sintering power of the AuCdSe-MoO solid lubricating phase is 110-120W, the scanning mode is linear scanning, the speed is 4500-5500mm/s, the spacing is 0.04-0.12 mu m, the powder feeding rate is 5-10g/min, and the single-layer cladding thickness is 8-15 mu m;

infiltrating the regulating agent LiPbAg-BC in the microporous flow passage under the vacuum pressure in the step (4), wherein the infiltration temperature is 1300-^-2Pa, application of pressure0.6-0.9Mpa, and the filling rate of the regulator LiPbAg-BC is 95.50-99.95%.

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