CN108359824A - A kind of Ti-18Mo-xSi composite material and preparation methods of graphene enhancing - Google Patents

A kind of Ti-18Mo-xSi composite material and preparation methods of graphene enhancing Download PDF

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CN108359824A
CN108359824A CN201810081515.7A CN201810081515A CN108359824A CN 108359824 A CN108359824 A CN 108359824A CN 201810081515 A CN201810081515 A CN 201810081515A CN 108359824 A CN108359824 A CN 108359824A
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powder
xsi
ball milling
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gnp
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CN108359824B (en
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汝金明
王月美
阮鸿雁
王亚
周玉华
李建伟
许晓静
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Jiangsu University
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making non-ferrous alloys
    • C22C1/04Making non-ferrous alloys by powder metallurgy
    • C22C1/05Mixtures of metal powder with non-metallic powder
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00Making metallic powder or suspensions thereof
    • B22F9/02Making metallic powder or suspensions thereof using physical processes
    • B22F9/04Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C14/00Alloys based on titanium
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00Making metallic powder or suspensions thereof
    • B22F9/02Making metallic powder or suspensions thereof using physical processes
    • B22F9/04Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
    • B22F2009/043Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by ball milling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10Processes characterised by the sequence of their steps
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2999/00Aspects linked to processes or compositions used in powder metallurgy

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  • Engineering & Computer Science (AREA)
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Abstract

The invention discloses a kind of Ti 18Mo xSi composite material and preparation methods of graphene enhancing, which is prepared by titanium valve, molybdenum powder, silica flour and nano-graphene (GNP) powder compound sintering;The component of Ti 18Mo xSi+0.5GNP composite powders is to calculate by percentage to the quality, wherein titanium valve, molybdenum powder and silica flour three form matrix mixed-powder;Ti contents are (82 x) wt.%, and Mo contents are 18wt.%, and Si contents are x wt.%;The preparation method is:First, Ti powder, Mo powder, Si powder and nanometer GNP powder are subjected to high-energy ball milling after mixing, keep its partially-alloyed, the powder obtained by ball milling is sieved again, it is dry, briquetting then is made by compression molding in dry powder, finally by vacuum non-pressure sintering, make its abundant alloying.Uniform corrosion resistance of Ti 18Mo xSi composite material compositions provided by the invention etc. is improved to some extent, and is with a wide range of applications in fields such as aerospace, war industry, navigation, automobiles.

Description

A kind of Ti-18Mo-xSi composite material and preparation methods of graphene enhancing
Technical field
The present invention relates to a kind of composite technology more particularly to a kind of graphenes improving hardness and corrosion resistance The Ti-18Mo-xSi composite material and preparation methods of enhancing.
Background technology
Titanium or titanium alloy is very important structural metallic materials, has the spies such as high specific strength, excellent corrosion resistance Point has a wide range of applications in fields such as aerospace, war industry, navigation, automobile, petrochemical industry, biological medicines.However, Continuous improvement with space industry to high performance material demand, such as superelevation velocity of sound aircraft, orbiter, space shuttle Demand of the high-tech Space Equipment to light-weight high-strength material, titanium or titanium alloy material have been difficult to meet high performance requirement, therefore, The development of titanium or titanium alloy is gradually shifted to titanium matrix composite (TMCs) and has been successfully applied to more demanding aircraft equipment On component.After decades of development, titanium matrix composite main development continuous fiber reinforcing titanium matrix composite and Fei Lian Continuous enhancing composite material two major classes.Continuous fiber reinforcing titanium matrix composite is since fiber is expensive, anisotropy, prepares again Miscellaneous, the shortcomings of secondary operation is difficult, application range is significantly limited, and with isotropism, discontinuous reinforcement titanium-based easy to process Composite material is big with its mechanical performance increase rate, it is at low cost the features such as, it has also become the important research direction of titanium matrix composite. The reinforcement of the high specific strength, specific modulus that are added in discontinuous reinforcement titanium matrix composite be remarkably improved material specific strength, Specific modulus, while the excellent mechanical performance of material is can also impart to, requirement of the space flight Hi-Tech equipment to material can be met.
Currently used reinforcement mainly has B4C、TiB2、ZrB2, TiC, TiB and SiC etc., developed carbon again in recent years and received Reinforcement of the materials such as mitron, GNP as titanium matrix composite.In these reinforcement materials, GNP has higher springform (1.0TPa), higher intensity (130GPa), while the also specific surface area with bigger are measured, it can be between matrices of composite material Form the interface of bigger.In addition, addition GNP can improve the comprehensive performance of composite material with in-situ preparation SiC reinforcements.Therefore, Select GNP that there are very high application value and wide Research Prospects as the reinforcement of titanium matrix composite.
Invention content
The purpose of the present invention is for the not high problem of existing titanium alloy overall performance, invent a kind of using " high energy ball The Ti-18Mo-xSi composite materials of nano-graphene enhancing prepared by mill-compression molding-vacuum non-pressure sintering " technique;This method Easy to operate, of low cost, obtained titanium matrix composite titanium silicon and molybdenum silicon intermetallic compound content is higher, comprehensive performance compared with It is good.
The present invention is achieved by following technical solution:
A kind of Ti-18Mo-xSi composite materials of graphene enhancing, the composite material is by titanium valve, molybdenum powder, silica flour and nanometer Graphene (GNP) powder compound sintering is prepared;The component of Ti-18Mo-xSi+0.5GNP composite powders is with quality percentage Than calculating, wherein titanium valve, molybdenum powder and silica flour three form matrix mixed-powder;Ti contents are that (82-x) wt.%, Mo contents are 18wt.%, Si content are x wt.%;Nanometer GNP powder is the 0.5wt.% of matrix mixed-powder;The value range of x is 0-2.
Further, the value of the x is 0 either 0.5 or 1 or 2.
The present invention another technical solution be:
A kind of preparation method of the Ti-18Mo-xSi composite materials of graphene enhancing, includes the following steps:
Step 1) the mixed powder of high-energy ball milling:It first presses composition and prepares Ti-18Mo-xSi mixed-powders, be put into ball grinder, be placed in ball With certain ball milling parameter ball milling in grinding machine so that three kinds of powder of Ti, Mo and Si powder are partially-alloyed;Secondly, in obtained matrix On the basis of mixed-powder, the nanometer GNP powder of 0.5wt.% mixed-powder quality is added, using absolute ethyl alcohol wet-milling so that Nanometer GNP powder is fully dispersed, is placed in ball grinder and dry grinds again after mixed-powder drying so that Ti, Mo, Si and nanometer GNP Gained mixed-powder after ball milling is crossed 300 mesh sieve, is placed in drying in vacuum drying chamber by four kinds of abundant alloyings of powder;
Step 2) routine compression molding:By step 1) in prepare mixed-powder compression moulding, obtain briquetting;
Step 3) vacuum non-pressure sintering:By step 2) in compression moulding briquetting carry out vacuum non-pressure sintering so that Ti, Mo, Si and the further alloyings of nanometer GNP.
Further, step 1) described in high-energy ball milling mix powder in, dry mill process is:Ratio of grinding media to material (8~12):1, rotating speed 300~500r/min, Ball-milling Time at least 48h shut down 10min per ball milling 50min;Wet-grinding technology and relative device is:It is added suitable anhydrous Ethyl alcohol floods abrading-ball, 300~500r/min of rotating speed, and Ball-milling Time shuts down 10min at least for 24 hours, per ball milling 50min.
Further, step 1) described in composite powder after ball milling be placed in vacuum drying chamber, be warming up to 60 with drying box At least 4h is kept the temperature after~80 DEG C, crosses 300 mesh sieve.
Further, step 2) described in the technique of compression moulding be:The operating pressure used when compacting for 550~ 650MPa, briquetting are the round block of Φ 30mm, 3~5mm of thickness.
Further, step 3) described in the technique of vacuum non-pressure sintering be:It is evacuated to 1 × 10-1Pa, heating rate For 4~5 DEG C/min, sintering process is 900 DEG C × 2h+1300 DEG C × 3h, last furnace cooling.
The beneficial effects of the invention are as follows:
(1) present invention innovatively proposes a kind of novel " high-energy ball milling-compression molding-vacuum non-pressure sintering " powder metallurgy Preparation process makes Ti in the mixed powder stage by high-energy ball milling, and Mo, Si and tetra- kinds of powder of nanometer GNP are partially-alloyed, wherein wet The mill stage keeps nanometer GNP fully dispersed;In sintering process, further alloying.Compared with ordinary powder metallurgical technology, this work Skill makes four kinds of powder metallurgies and Composite more abundant, and a kind of preparation of industrialized production is provided for titanium matrix composite Method.
(2) the Ti-18Mo-xSi composite material and preparation methods operation letter of a kind of graphene enhancing provided by the invention Single, easily realization, economical.
(3) the Ti-18Mo-xSi composite materials for the graphene enhancing that prepared by the present invention are compared to common Ti-18Mo-xSi Alloy material, hardness and corrosion resistance etc. are improved to some extent.
(4) it has well solved to high-strength light, the demand problem of corrosion-resistant contour performance titanium alloy.
Description of the drawings
Fig. 1 is the macrograph that front and back Ti-18Mo alloys are sintered in comparative example of the present invention;
Fig. 2 is the macrograph that front and back Ti-18Mo+0.5GNP composite materials are sintered in the embodiment of the present invention;
Fig. 3 is the XRD diffraction patterns of Ti-18Mo-0.5Si alloys after being sintered in comparative example of the present invention;
Fig. 4 is the XRD diffraction patterns of Ti-18Mo-0.5Si+0.5GNP composite materials after being sintered in the embodiment of the present invention;
Fig. 5 is Ti-18Mo-1Si alloys and Ti-18Mo-1Si+0.5GNP composite woods in comparative example and embodiment of the present invention The corrosion kinetics curve of material.
Specific implementation mode
The specific implementation mode of the present invention is described in detail with reference to the accompanying drawings and examples, but the present invention not only limits In embodiment.
Embodiment 1
A kind of Ti-18Mo-xSi composite materials of graphene enhancing, Ti-18Mo+0.5GNP are prepared by following methods: First, the mixed-powder of Ti, Si and Mo powder of 30g is prepared, wherein Ti silty amount is 82wt.% (24.6g), and Mo silty amounts are 18wt.% (5.4g), mixed-powder is placed in beaker and is stirred evenly;Secondly, first according to ratio of grinding media to material 8:1 weighs 240g agate balls It is placed in 500ml nylon ball grinders, then mixed-powder is placed in nylon ball grinder, seals;Then, ball grinder is installed On planetary ball mill, starting ball milling, ball milling parameter is set as 500r/min, and ball milling 50min shuts down 10min, after ball milling 48h, Take out the powder in ball grinder;On the basis of obtained matrix mixed-powder, the nanometer of 0.5wt.% mixed-powder quality is added GNP powder (0.15g), using absolute ethyl alcohol wet-milling, ball milling parameter is set as 500r/min, and ball milling 50min shuts down 10min, ball After grinding for 24 hours, it is placed in 60~80 DEG C of vacuum drying at least 4h in drying box;It dry grinds again after mixed-powder cooling, ball milling ginseng Number is set as 500r/min, and ball milling 50min shuts down 10min, ball milling for 24 hours after, take out the powder in ball grinder;By the mixing of taking-up Powder crosses 300 mesh sieve, after obtaining the powder of uniform granularity, places it in vacuum drying chamber and is dried in vacuo at least for 60~80 DEG C 4h obtains required powder;Then, the powder compact forming method unidirectionally to be pressurizeed using mold is pressed into gained powder Type, mold internal diameter are φ 30mm, operating pressure 550MPa, and the round block of φ 30mm, 3~5mm of thickness is made;Finally, gained is pressed Block, which is placed in tube type vacuum sintering furnace, carries out vacuum non-pressure sintering, first will be evacuated to 1 × 10 in stove-1Pa, heating rate 4 DEG C/min, sintering process is 900 DEG C × 2h+1300 DEG C × 3h, last furnace cooling.
Comparative example
The preparation method of Ti-18Mo alloys
Attached drawing 1 is the macrograph that front and back Ti-18Mo alloys are sintered in the embodiment of the present invention, and the sintering shrinkage of alloy is 10.5%;The hardness of Ti-18Mo alloys is 628.14Hv, corrodes the loss of weight after 100h in the HCl solution of 1mol/L and is 4.51mg·cm-2
Attached drawing 2 is the macrograph that front and back Ti-18Mo+0.5GNP composite materials are sintered in the embodiment of the present invention, composite material Sintering shrinkage improve 60.9% (16.9%VS 10.5%) than alloy, show that a nanometer GNP improves sintering quality.It is right It is found than embodiment 1 and comparative example, Ti-18Mo+0.5GNP composite materials obtained is comprehensive after addition nanometer GNP powder It can be better, wherein the hardness ratio Ti-18Mo alloys of Ti-18Mo+0.5GNP composite materials improve 22.5% (719.13Hv VS628.14Hv), corroding the loss of weight ratio Ti-18Mo alloys after 100h in the HCl solution of 1mol/L reduces 60.8% (1.77mg·cm-2VS 4.51mg·cm-2)。
Embodiment 2
A kind of Ti-18Mo-xSi composite materials of graphene enhancing:Ti-18Mo-0.5Si+0.5GNP is by following methods system It is standby to form:The present embodiment and embodiment 1 are similar, the difference is that the mass fraction of Si powder is improved extremely by 0wt.% (0g) 0.5wt.% (0.15g), correspondingly, the mass fraction of Ti powder are reduced to 81.5wt.% (24.45g) by 82wt.% (24.6g).
Comparative example
The preparation method of Ti-18Mo-0.5Si alloys
Attached drawing 3 is the XRD diagram of Ti-18Mo-0.5Si alloys after sintering;Through analysis, contain Ti5Si4, TiSi and Mo5Si3Deng Compound, Ti5Si4Diffraction peak intensity ratio Mo5Si3Diffraction peak intensity it is slightly higher;The hardness of Ti-18Mo-0.5Si alloys is 674.62Hv, it is 3.93mgcm to corrode the loss of weight after 100h in the HCl solution of 1mol/L-2.Attached drawing 4 is Ti-18Mo- The XRD diagram of 0.5Si+0.5GNP composite materials, it is similar to Fig. 3, through analysis, contain Ti5Si4、TiSi、Mo5Si3With the chemical combination such as SiC Object, Mo5Si3Diffraction peak intensity ratio Ti5Si4Diffraction peak intensity it is slightly higher, between showing that nanometer GNP can promote compound Conversion;The comprehensive performance ratio Ti- of Ti-18Mo-0.5Si+0.5GNP composite materials made from after addition nanometer GNP powder 18Mo-0.5Si better, wherein the hardness ratio Ti-18Mo-0.5Si alloys of Ti-18Mo-0.5Si+0.5GNP composite materials carry High 22.5% (782.4Hv VS 674.62Hv), corrodes the loss of weight ratio Ti-18Mo- after 100h in the HCl solution of 1mol/L 0.5Si alloys reduce 35.9% (2.52mgcm-2VS 3.93mg·cm-2)。
Embodiment 3
A kind of Ti-18Mo-xSi composite materials of graphene enhancing:Ti-18Mo-1Si+0.5GNP is prepared by following methods It forms:First, the mixed-powder of Ti, Si and Mo powder of 30g is prepared, wherein Ti silty amount is 81wt.% (24.3g), Mo silty Amount is 18wt.% (5.4g), and Si silty amounts are 1wt.% (0.3g), and mixed-powder is placed in beaker and is stirred evenly;
Secondly, according to ratio of grinding media to material 8:1, which first weighs 240g agate balls, is placed in 500ml nylon ball grinders, then will be uniformly mixed Mixed-powder be placed in nylon ball grinder, seal;
Then, ball grinder is mounted on planetary ball mill, starts ball milling, ball milling parameter is set as 500r/min, ball milling After 50min shutdown 10min, ball milling 48h, the powder in ball grinder is taken out;
On the basis of obtained matrix mixed-powder, nanometer GNP (0.15g) powder of 0.5wt.% mixed-powder quality is added End, using absolute ethyl alcohol wet-milling, ball milling parameter is set as 500r/min, and ball milling 50min shuts down 10min, ball milling for 24 hours after, be placed in 60~80 DEG C of vacuum drying at least 4h in drying box;
Mixed-powder after cooling is dry grinded again, and ball milling parameter is set as 500r/min, and ball milling 50min is shut down 10min, ball milling for 24 hours after, take out ball grinder in powder;
The mixed-powder of taking-up is crossed into 300 mesh sieve, after obtaining the powder of uniform granularity, is placed it in vacuum drying chamber 60~80 DEG C of vacuum drying at least 4h, obtain required powder;
Then, gained powder is pressed in the powder compact forming method unidirectionally to be pressurizeed using mold, in mold Diameter is φ 30mm, operating pressure 550MPa, and the round block of φ 30mm, 3~5mm of thickness is made;
Finally, gained briquetting is placed in tube type vacuum sintering furnace and carries out vacuum non-pressure sintering, first will be evacuated to 1 in stove ×10-1Pa, heating rate are 4 DEG C/min, and sintering process is 900 DEG C × 2h+1300 DEG C × 3h, last furnace cooling.
Comparative example
The preparation method of Ti-18Mo-1Si alloys
The hardness of Ti-18Mo-1Si alloys is 698.79Hv, corrodes the loss of weight after 100h in the HCl solution of 1mol/L and is 3.62mg·cm-2
Attached drawing 5 is the corrosion dynamic curve of Ti-18Mo-1Si alloys and Ti-18Mo-1Si+0.5GNP composite materials, comparison Embodiment 3 is found with comparative example, adds the synthesis of Ti-18Mo-1Si+0.5GNP composite materials obtained after nanometer GNP powder Performance ratio Ti-18Mo-1Si is better, wherein the hardness ratio Ti-18Mo-1Si of Ti-18Mo-1Si+0.5GNP composite materials is closed Gold improves 22.5% (817.37Hv VS 698.79Hv), corrodes the loss of weight ratio Ti- after 100h in the HCl solution of 1mol/L 18Mo-1Si alloys reduce 72.4% (1.0mgcm-2VS 3.62mg·cm-2)。
Embodiment 4
A kind of Ti-18Mo-xSi composite materials of graphene enhancing:Ti-18Mo-2Si+0.5GNP is prepared by following methods It forms:First, the mixed-powder of Ti, Si and the Zr powder of 30g is prepared, wherein Ti silty amount is 80wt.% (24g), Mo silty amounts For 18wt.% (5.4g), Si silty amounts are 2wt.% (0.6g), and mixed-powder is placed in beaker and is stirred evenly;Next, according to Ratio of grinding media to material 8:1, which first weighs 240g agate balls, is placed in 500ml nylon ball grinders, then will weigh and uniformly mixed mixed-powder is set In nylon ball grinder, seal;Then, ball grinder is mounted on planetary ball mill, starts ball milling, ball milling parameter setting For 500r/min, ball milling 1h shuts down 15min, after ball milling 48h, takes out the powder in ball grinder;Matrix mixed-powder is being made On the basis of, nanometer GNP (0.15g) powder of 0.5wt.% mixed-powder quality is added, using absolute ethyl alcohol wet-milling, ball milling parameter Be set as 500r/min, ball milling 50min shuts down 10min, ball milling for 24 hours after, be placed in drying box 60~80 DEG C of vacuum drying at least 4h;Mixed-powder after cooling carries out the dry grinding of last time again, and ball milling parameter is set as 500r/min, and ball milling 50min stops Machine 10min, ball milling for 24 hours after, take out ball grinder in powder;The mixed-powder of taking-up is crossed into 300 mesh sieve, obtains uniform granularity Powder after, place it in vacuum drying chamber 60~80 DEG C of vacuum drying at least 4h, obtain required powder;Then, using mould Have the powder compact forming method unidirectionally to pressurize gained powder is pressed, mold internal diameter is φ 30mm, operating pressure For 550MPa, the round block of φ 30mm, 3~5mm of thickness is made;Finally, gained briquetting is placed in tube type vacuum sintering furnace and is carried out very Empty pressureless sintering first will be evacuated to 1 × 10 in stove-1Pa, heating rate are 4 DEG C/min, and sintering process is 900 DEG C × 2h+ 1300 DEG C × 3h, last furnace cooling.
Comparative example
The preparation method of Ti-18Mo-2Si alloys
The hardness of Ti-18Mo-2Si alloys is 934.28Hv, corrodes the loss of weight after 100h in the HCl solution of 1mol/L and is 4.51mg·cm-2
Comparative example 4 finds that Ti-18Mo-2Si+0.5GNP obtained is multiple after addition nanometer GNP powder with comparative example The comprehensive performance ratio Ti-18Mo-2Si of condensation material is better, wherein the hardness ratio of Ti-18Mo-2Si+0.5GNP composite materials Ti-18Mo-2Si alloys improve 22.5% (1047.13Hv VS 934.28Hv), corrode in the HCl solution of 1mol/L Loss of weight ratio Ti-18Mo-2Si alloys after 100h reduce 94.0% (0.27mgcm-2VS 4.51mg·cm-2)。
Part that the present invention does not relate to is the same as those in the prior art or can be realized by using the prior art.
The embodiment is the preferred embodiments of the present invention, but present invention is not limited to the embodiments described above, not Away from the present invention substantive content in the case of, those skilled in the art can make it is any it is conspicuously improved, replace Or modification all belongs to the scope of protection of the present invention.

Claims (7)

1. a kind of Ti-18Mo-xSi composite materials of graphene enhancing, it is characterised in that:The composite material is by titanium valve, molybdenum powder, silicon Powder and nano-graphene (GNP) powder compound sintering are prepared;The component of Ti-18Mo-xSi+0.5GNP composite powders be with Mass percent calculates, wherein titanium valve, molybdenum powder and silica flour three form matrix mixed-powder;Ti contents are (82-x) wt.%, Mo contents are 18wt.%, and Si contents are x wt.%;Nanometer GNP powder is the 0.5wt.% of matrix mixed-powder;The value model of x It encloses for 0-2.
2. the Ti-18Mo-xSi composite materials of graphene enhancing according to claim 1, it is characterised in that:The x's takes Value is 0 either 0.5 or 1 or 2.
3. a kind of preparation method of the Ti-18Mo-xSi composite materials of claim 1 to 2 any one of them graphene enhancing, It is characterized in that:Include the following steps:
Step 1) the mixed powder of high-energy ball milling:It first presses composition and prepares Ti-18Mo-xSi mixed-powders, be put into ball grinder, be placed in ball mill It is interior with certain ball milling parameter ball milling so that three kinds of powder of Ti, Mo and Si powder are partially-alloyed;Secondly, it is mixed in obtained matrix On the basis of powder, the nanometer GNP powder of 0.5wt.% mixed-powder quality is added, using absolute ethyl alcohol wet-milling so that nanometer GNP powder is fully dispersed, is placed in ball grinder and dry grinds again after mixed-powder drying so that Ti, Mo, Si and tetra- kinds of nanometer GNP Gained mixed-powder after ball milling is crossed 300 mesh sieve, is placed in drying in vacuum drying chamber by the abundant alloying of powder;
Step 2) routine compression molding:By step 1) in prepare mixed-powder compression moulding, obtain briquetting;
Step 3) vacuum non-pressure sintering:By step 2) in compression moulding briquetting carry out vacuum non-pressure sintering so that Ti, Mo, Si and the further alloyings of nanometer GNP.
4. the preparation method of the Ti-18Mo-xSi composite materials of graphene enhancing as claimed in claim 3, it is characterised in that: Step 1) described in high-energy ball milling mix powder in, dry mill process is:Ratio of grinding media to material (8~12):1,300~500r/min of rotating speed, ball milling Time at least 48h shuts down 10min per ball milling 50min;Wet-grinding technology and relative device is:Suitable absolute ethyl alcohol is added to flood abrading-ball, rotating speed 300~500r/min, Ball-milling Time shut down 10min at least for 24 hours, per ball milling 50min.
5. the preparation method of the Ti-18Mo-xSi composite materials of graphene enhancing as claimed in claim 3, it is characterised in that: Step 1) described in composite powder after ball milling be placed in vacuum drying chamber, kept the temperature at least after being warming up to 60~80 DEG C with drying box 4h crosses 300 mesh sieve.
6. the preparation method of the Ti-18Mo-xSi composite materials of graphene enhancing as claimed in claim 3, which is characterized in that Step 2) described in the technique of compression moulding be:The operating pressure used when compacting for 550~650MPa, briquetting be Φ 30mm, The round block of 3~5mm of thickness.
7. the preparation method of the Ti-18Mo-xSi composite materials of graphene enhancing as claimed in claim 3, which is characterized in that Step 3) described in the technique of vacuum non-pressure sintering be:It is evacuated to 1 × 10-1Pa, heating rate are 4~5 DEG C/min, sintering Technique is 900 DEG C × 2h+1300 DEG C × 3h, last furnace cooling.
CN201810081515.7A 2018-01-29 2018-01-29 Graphene-reinforced Ti-18Mo-xSi composite material and preparation method thereof Expired - Fee Related CN108359824B (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109518037A (en) * 2018-12-29 2019-03-26 江苏大学 A kind of Ti-18Mo-xSi alloy material and preparation method thereof of SPS preparation
CN110157947A (en) * 2019-04-04 2019-08-23 江苏大学 A kind of SPS sintering Ti-18Mo-0.5Si-xGNP composite material and preparation method
CN111378870A (en) * 2020-04-22 2020-07-07 江苏大学 SPS sintering titanium-based composite material and preparation method thereof
CN113020604A (en) * 2021-03-05 2021-06-25 西安建筑科技大学 High-strength wear-resistant high-temperature-resistant titanium-aluminum oxide alloy material and preparation method thereof
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CN109518037A (en) * 2018-12-29 2019-03-26 江苏大学 A kind of Ti-18Mo-xSi alloy material and preparation method thereof of SPS preparation
CN110157947A (en) * 2019-04-04 2019-08-23 江苏大学 A kind of SPS sintering Ti-18Mo-0.5Si-xGNP composite material and preparation method
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CN111378870B (en) * 2020-04-22 2021-08-06 江苏大学 SPS sintering titanium-based composite material and preparation method thereof
CN113020604A (en) * 2021-03-05 2021-06-25 西安建筑科技大学 High-strength wear-resistant high-temperature-resistant titanium-aluminum oxide alloy material and preparation method thereof
CN115807179A (en) * 2021-09-14 2023-03-17 中国石油天然气股份有限公司 Titanium graphene composite material and preparation method and application thereof
CN115807179B (en) * 2021-09-14 2024-04-26 中国石油天然气股份有限公司 Titanium graphene composite material and preparation method and application thereof

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