CN111690858A - Wear-resistant self-lubricating Ti3Al1-xSixC2Self-interface regulation and control method of-Mg-based composite material - Google Patents

Wear-resistant self-lubricating Ti3Al1-xSixC2Self-interface regulation and control method of-Mg-based composite material Download PDF

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CN111690858A
CN111690858A CN201910187861.8A CN201910187861A CN111690858A CN 111690858 A CN111690858 A CN 111690858A CN 201910187861 A CN201910187861 A CN 201910187861A CN 111690858 A CN111690858 A CN 111690858A
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composite material
based composite
wear
self
lubricating
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于文波
黄振莺
翟洪祥
李世波
周洋
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Beijing Jiaotong University
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Beijing Jiaotong University
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C23/00—Alloys based on magnesium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
    • C22C32/0047—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents
    • C22C32/0052—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents only carbides

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Sliding-Contact Bearings (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)

Abstract

The invention relates to a wear-resistant self-lubricating Ti3Al1‑xSixC2-Mg-based composite material self-interface regulation method. By passing Ti3(SixAl1‑x)C2Substituted Ti3SiC2Can avoid Ti3SiC2The interface with the Mg matrix is weakly bonded. Can pass through Ti3(SixAl1‑x)C2Substituted Ti2And the content of active Al element at A site is reduced and the content of inert Si element is increased to reduce the generation amount of active substances at the interface of the composite material. At the same time, since Ti3(SixAl1‑x)C2The elastic modulus and hardness of the alloy show a linear increase with decreasing Al content[26]It is foreseen that Ti3(SixAl1‑x)C2-Mg-based composite material having self-lubricationThe wear resistance of the material is higher than that of Ti while the material has sliding property2AlC-Mg based composite material and can be regulated and controlled.

Description

Wear-resistant self-lubricating Ti3Al1-xSixC2Self-interface regulation and control method of-Mg-based composite material
Technical Field
The invention relates to a wear-resistant self-lubricating Ti3Al1-xSixC2-Mg-based composite material self-interface regulation method.
Background
Magnesium (1.74 g-cm) of low density compared with metals such as Fe, Ti, Al and the like-3) The damping and noise-reducing composite material has higher specific strength and specific rigidity, more excellent damping, vibration-reducing and noise-reducing and electromagnetic interference shielding performances and good recyclability (reference: dey, A.and K.M.Pandey, Rev.Adv.Mater.Sci,2015.42(1): p.58-67). Global problems such as energy shortage, greenhouse effect and the like are exciting huge application potential of the ultra-light magnesium alloy in the fields of automobiles and aerospace. Among them, some medium and low temperature parts need magnesium alloy with excellent strength, rigidity, impact resistance and wear-resistant self-lubricating performance (low wear rate and low friction coefficient), such as piston rings, shaft sleeves, bearing bushes and other parts. However, the low stiffness and hardness, poor wear resistance and high temperature creep resistance of magnesium alloys themselves limit their widespread use (references: high stem and leaf, metals world, 2011(2): p.27-32.).
In recent years, a ternary compound MAX phase ceramic having a nano-layered structure, which can be machined, has received increasing attention (references: Barsum, M.W., Progress in Solid State Chemistry,2000.28: p.201-281; Barsum, M.W.and T.El-Raghy, American scientific, 2001.89(4): p.336-345.). The chemical formula of the MAX phase is Mn+1AXn(N-1, 2 or 3), M is a transition metal, A is mainly a group IIIA or IVA element, C is a C or N element, and the density is 4g cm-3Left and right. Over 60 phase 211, 312 and 413 compounds and solid solutions thereof have been synthesized, typically with Ti3SiC2、Ti3AlC2、Ti2AlC、Ti2SnC、Nb2Pure MAX phases such as AlC and Ti3SiAlC2、Ti3AlSnC2And Ti2AlSnC and the like, and a MAX phase is dissolved in the A site. On the premise of high hardness (3-9GPa) and high elastic modulus (300 GPa), a large amount of dislocation movement in the MAX material allows certain plastic deformation. MAX is different from the traditional hard and brittle SiC and TiC ceramicsThe material exhibits excellent toughness and workability, such as Ti2The fracture toughness of AlC is 6.5-7.9 +/-0.1 MPa.m1/2. MAX (space group P63/mmc) is a hexagonal system with Mg, the M atoms form octahedral layers with strong covalent bonds to the X atoms, which are separated by an A atom layer, located at M6X octahedral center. Similar to the layered graphite, sliding easily occurs between the M layer and the a layer under the shear force. Therefore, the MAX material has excellent wear-resisting self-lubricating performance. For example, Dianthus haichi et al (ref: Huang, Z., et al., Wear,2007.262(9): p.1079-1085.) report Ti3SiC2The friction coefficient and the friction rate of the alloy are only 0.27 and 1.37 × 10 when the alloy is rubbed with low-carbon steel under the dry friction conditions of 20m/s and 0.8MPa-6mm3V (N.m). Barsum et al (reference: Barsum, M.W., et al, Nature Materials,2003.2: p.107.) find that MAX phase and metals such as Mg, Ti, Zr and Zn belong to a close-packed hexagonal system, and have a micro plastic deformation mechanism, namely Incipient Kinkking Bands (IKB) formed inside, and the cyclic compression process can greatly absorb external energy
For Ti2The research on the frictional wear behavior of the AlC-Mg composite material shows that the layered Ti2The AlC particles and the formation of nano-MgO particles by tribothermal oxidation impart excellent self-lubricating properties to the composite material (reference: Yu, W., et al, journal of Materials Science)&Technology,2019.35(3): p.275-284). The study showed that 5% vol.Ti was added2The AlC particles can significantly improve the wear resistance of the Mg alloy matrix. However, increase of Ti2The AlC particle volume fraction is up to 10%, and the wear resistance of the composite material is not improved continuously. This is due to the following Ti2The content of nano Mg crystal grains with extremely high activity and an amorphous Mg layer at the interface of the composite material is increased along with the increase of the adding amount of AlC particles, and the abrasion caused by the formation of abrasive dust due to oxidation in the friction process is easy to occur.
According to the work results already obtained, it is possible to pass Ti3(SixAl1-x)C2Substituted Ti2And the content of active Al element at A site is reduced and the content of inert Si element is increased to reduce the generation amount of active substances at the interface of the composite material. At the same time, since Ti3(SixAl1-x)C2The elastic modulus and hardness of (A) show a linear increase with decreasing Al content (references: Xu, X., T.L.Ngai, and Y.Li, Ceramics International,2015.41(6): p.7626-7631), and Ti is foreseen3(SixAl1-x)C2The Mg-based composite material has self-lubricating property and higher wear resistance than Ti2AlC-Mg based composite material and can be regulated and controlled.
Disclosure of Invention
The invention is through Ti3(SixAl1-x)C2Substituted Ti2AlC and Ti3SiC2The content of active Al element at A site and the content of inert Si element are reasonably controlled to regulate and control the generation amount of active material Mg crystal grains at the interface of the composite material, and the wear-resisting and self-lubricating properties are synergistically improved.
The invention is wear-resistant and self-lubricating Ti3Al1-xSixC2-Mg-based composite material, having the following composition:
Ti3Al1-xSixC2MAX material, and Mg-based alloy as the rest.
Ti of the invention3Al1-xSixC2-Mg-based composite material, characterized by the following:
by adjusting Ti3Al1-xSixC2The value of x (0-1) inside the MAX material realizes Ti3Al1-xSixC2And regulating and controlling the interface structure with the Mg matrix.
The method comprises the following steps:
step 1, regulating and controlling Ti3Al1-xSixC2The value of x in the material.
Step 2, adding Ti with different x values3Al1-xSixC2The powder is added to the Mg matrix, and includes powder metallurgy, cast metal, and impregnation.
The invention has the following beneficial effects:
drawings
FIG. 1 is Ti2AlC-Mg transmission electron microscope interface analysis chart
FIG. 2 is Ti3SiC2-Mg Transmission Electron microscopy interface analysis map
FIG. 3 is Ti3Si0.8Al0.2C2-Mg composite material transmission electron microscope interface analysis chart
Detailed Description
The invention provides a wear-resistant self-lubricating Ti3Al1-xSixC2The present invention will be described in detail with reference to the accompanying drawings and examples, but the present invention is not limited thereto.
Example 1
Ti is prepared by the conventional method for preparing the magnesium-based composite material2AlC-Mg based composite material. Ti2A large amount of nano Mg grains are formed among AlC grains, which has the effect of refining and strengthening the magnesium matrix grains. The nano Mg crystal and Ti are found2Between the AlC particles there is an amorphous Mg layer with a thickness of about 0.5 nm. This serves as a strong interfacial bond.
Example 2
Ti is prepared by the conventional method for preparing the magnesium-based composite material3SiC2-Mg-based composite materials. Ti3SiC2No nano-sized Mg grains were found between the particles.
Example 3
Ti is prepared by the conventional method for preparing the magnesium-based composite material3Si0.8Al0.2C2-Mg-based composite materials. Ti3Si0.8Al0.2C2-the presence of Mg grains in the nanometric state between the Mg-based composite particles, and the nanometric Mg grains having a size and number respectively significantly higher and lower than those of Ti2AlC2-nano-Mg grains in Mg-based composite materials.

Claims (2)

1. Wear-resistant self-lubricating Ti3Al1-xSixC2-Mg-based composite material self-interface regulation method, characterized in that Ti is adopted3(SixAl1-x)C2Substituted Ti2AlC and Ti3SiC2The content of active Al element at A site and the content of inert Si element are reasonably controlled to regulate and control the generation amount of active material Mg crystal grains at the interface of the composite material, and the wear-resisting and self-lubricating properties are synergistically improved.
2. The wear resistant self lubricating Ti of claim 13Al1-xSixC2-a Mg-based composite material, characterized in that: ti3Al1- xSixC2The value of x within the MAX material may be chosen in the range 0-1, Ti3Al1-xSixC2The antiwear self-lubricating properties of the Mg-based composite material can be synergistically optimized.
CN201910187861.8A 2019-03-13 2019-03-13 Wear-resistant self-lubricating Ti3Al1-xSixC2Self-interface regulation and control method of-Mg-based composite material Pending CN111690858A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113149653A (en) * 2021-04-08 2021-07-23 中国科学院金属研究所 MAX-phase ceramic-magnesium or magnesium alloy composite material and preparation method thereof
CN113560542A (en) * 2021-07-15 2021-10-29 北京交通大学 Dual-continuous-phase Ti with controllable reinforced phase2AlN/Mg-based composite material and pressureless infiltration preparation method thereof
CN114956835A (en) * 2022-04-19 2022-08-30 郑州大学 Ti 3 AlC 2 Preparation method of coated magnesia aggregate

Citations (4)

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Publication number Priority date Publication date Assignee Title
JPH08209336A (en) * 1995-01-31 1996-08-13 Hitachi Tool Eng Ltd Coated hard alloy
KR20020026323A (en) * 2002-03-06 2002-04-09 (주)유니에코 Nitrogen Oxides degradation apparatus combined non-thermal plasma with electrocatalytic reduction reactions.
CN102766774A (en) * 2012-07-10 2012-11-07 太原理工大学 Method for strengthening magnesium alloy by doping SiC particles
CN107119218A (en) * 2017-04-11 2017-09-01 北京交通大学 High-intensity high-damping Ti2AlC Mg based composites and its casting preparation method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08209336A (en) * 1995-01-31 1996-08-13 Hitachi Tool Eng Ltd Coated hard alloy
KR20020026323A (en) * 2002-03-06 2002-04-09 (주)유니에코 Nitrogen Oxides degradation apparatus combined non-thermal plasma with electrocatalytic reduction reactions.
CN102766774A (en) * 2012-07-10 2012-11-07 太原理工大学 Method for strengthening magnesium alloy by doping SiC particles
CN107119218A (en) * 2017-04-11 2017-09-01 北京交通大学 High-intensity high-damping Ti2AlC Mg based composites and its casting preparation method

Non-Patent Citations (3)

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Title
WENBO YU等: "Self-lubricate and anisotropic wear behavior of AZ91D magnesium alloy reinforced with ternary Ti2AlC MAX phases", 《JOURNAL OF MATERIALS SCIENCE&TECHNOLOGY》 *
XIAOLONG XU等: "Synthesis and characterization of quarternary Ti3Si(1-x)AlxC2 MAX phase materials", 《CERAMICS INTERNATIONAL》 *
王晓军等: "《颗粒增强镁基复合材料》", 30 April 2018, 国防工业出版社 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113149653A (en) * 2021-04-08 2021-07-23 中国科学院金属研究所 MAX-phase ceramic-magnesium or magnesium alloy composite material and preparation method thereof
CN113560542A (en) * 2021-07-15 2021-10-29 北京交通大学 Dual-continuous-phase Ti with controllable reinforced phase2AlN/Mg-based composite material and pressureless infiltration preparation method thereof
CN114956835A (en) * 2022-04-19 2022-08-30 郑州大学 Ti 3 AlC 2 Preparation method of coated magnesia aggregate
CN114956835B (en) * 2022-04-19 2023-03-07 郑州大学 Ti 3 AlC 2 Preparation method of coated magnesia aggregate

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Application publication date: 20200922