CN107043884A - A kind of TiO particles enhancing CoCrCuFeNi high-entropy alloys and preparation method thereof - Google Patents
A kind of TiO particles enhancing CoCrCuFeNi high-entropy alloys and preparation method thereof Download PDFInfo
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- CN107043884A CN107043884A CN201710240356.6A CN201710240356A CN107043884A CN 107043884 A CN107043884 A CN 107043884A CN 201710240356 A CN201710240356 A CN 201710240356A CN 107043884 A CN107043884 A CN 107043884A
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C30/00—Alloys containing less than 50% by weight of each constituent
- C22C30/02—Alloys containing less than 50% by weight of each constituent containing copper
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
- C22C1/058—Mixtures of metal powder with non-metallic powder by reaction sintering (i.e. gasless reaction starting from a mixture of solid metal compounds)
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Abstract
Strengthen CoCrCuFeNi high-entropy alloys the invention discloses a kind of TiO particles, the TiO particles enhancing CoCrCuFeNi high-entropy alloys are mainly prepared from by TiCO powder, Co powder, Cr powder, Cu powder, Fe powder and Ni powder.Particle enhancing high-entropy alloy prepared by the present invention, compared with CoCrCuFeNi matrix alloys, its resistivity reduces 20%, and thermal conductivity factor improves 25%, and hardness improves 30%, greatly improves the performance of each side.Tool has been widely used, especially in military industry field.
Description
Technical field
The present invention relates to a kind of composition metal oxidation powder body material and preparation method thereof, particularly a kind of highly conductive compound gold
Category oxidation powder body material and preparation method thereof.
Background technology
High-entropy alloy is a kind of new ideas of the material proposed first by TaiWan, China scholar for 2004, and he is a kind of new
Alloy material design concept, its constituent element number be more than 5, the atomic percentage conc of every kind of constituent element is substantially identical, and is ultimately formed
Material there is high entropy.Because this metallic element in alloy species is more, the randomness of Atomic Arrangement is big, high entropic effect
Necessarily promote the mixing between element so that alloy phase composition forms single crystal structure, such as single body-centered cubic or face
Heart cubic structure, or the mixed structure of the two, it is suppressed that the formation of brittle intermetallic compound.This metal structure performance
Go out except excellent mechanical property, make it have the tensile strength and hardness of superelevation, be this material under extreme conditions should
With laying a good foundation.
The research and development in more than ten years are experienced, high-entropy alloy occurs in that multiple series, from earliest CoCrCuFeNi systems
AlCoCrCuFeNi, TiCoCrCuFeNi, SiCoCrCuFeNi finally etc., recently, occurs in that the enhanced high entropy of particle is closed
Gold, such as TiC-CoCrCuFeNi, TiB-CoCrCuFeNi.Although the high-entropy alloys such as CoCrCuFeNi systems collect many merits in one
Body, but its specific insulation usual 4 × 10-5-5×10-5Ω ﹒ cm, i.e. specific insulation is larger, thermal conductivity factor 40-50W/
M.K, hardness 400-500HV, i.e. electrical conductivity and hardness are high not enough, therefore, existing high-entropy alloy, and the performance of each side is also
It is not good enough, limit its purposes.
Researchs of the TiO in terms of structural material applications is relatively fewer, and it is a kind of metal oxidation with abundant atom
Thing, due to the presence in a large amount of rooms so that this material is with very strong conductive capability and the capacity of heat transmission, while TiO has again
The advantage of high rigidity.Although TiO has the advantages that more, its chemical property stability is poor, is converted at 150 DEG C or so
The Ti of trivalent2O3, and then change into TiO2, so the extremely difficult system by way of the TiO particles that directly adulterate in material preparation process
For the enhanced structural material of TiO particles is gone out, therefore, up to the present also occur without related report.The present invention is by special
Means have prepared intermediate compound -- TiCO, TiO particles are directly generated by TiCO in material internal using in-situ endogenic reaction,
C is then discharged in the form of CO gases, so as to obtain TiO particles enhancing CoCrCuFeNi high-entropy alloys.TiO strengthens the production of particle
It is raw, the performance of high-entropy alloy is greatly improved, application is expanded.
The content of the invention
The purpose of the present invention, is to provide a kind of TiO particles enhancing CoCrCuFeNi high-entropy alloys and preparation method thereof.This hair
The particle enhancing high-entropy alloy of bright preparation, compared with CoCrCuFeNi matrix alloys, greatly improves the performance of high-entropy alloy,
Its resistivity reduces 20%, and thermal conductivity factor improves 25%, and hardness improves 30%, greatly improves the property of each side
Energy.Tool has been widely used, especially in military industry field.
What the present invention was realized in.
A kind of TiO particles strengthen CoCrCuFeNi high-entropy alloys, and it is made of with the raw material of following mol ratios, TiCO powder
0.5-1.5 parts, 0.8-1.2 parts of Co powder, 0.8-1.2 parts of Cr powder, 0.8-1.2 parts of Cu powder, 0.8-1.2 parts of Fe powder and Ni powder 0.8-
1.2 part.
Foregoing TiO particles enhancing CoCrCuFeNi high-entropy alloys, it is made of with the raw material of following mol ratios, TiCO
1 part of 1 part of powder, 1 part of Co powder, 1 part of Cr powder, 1 part of Cu powder, 1 part of Fe powder and Ni powder.
A kind of foregoing TiO particles strengthen the preparation method of CoCrCuFeNi high-entropy alloys, by TiCO powder, Co powder, Cr powder,
Cu powder, Fe powder and Ni powder, after mixing, under the conditions of temperature is 1000-2000 DEG C, below vacuum 10Pa reacts 10-30min,
Produce.
Foregoing TiO particles strengthen the preparation method of CoCrCuFeNi high-entropy alloys, and the temperature is 1300-1700 DEG C.
Foregoing TiO particles strengthen the preparation method of CoCrCuFeNi high-entropy alloys, and the temperature is 1400-1600 DEG C.
Foregoing TiO particles strengthen the preparation method of CoCrCuFeNi high-entropy alloys, and the temperature is 1500 DEG C.
Foregoing TiO particles strengthen the preparation method of CoCrCuFeNi high-entropy alloys, and the vacuum is 1-8Pa；Reaction
Time is 15-25min.
Foregoing TiO particles strengthen the preparation method of CoCrCuFeNi high-entropy alloys, and the vacuum is 2-6Pa；Reaction
Time is 20min.
Foregoing TiO particles strengthen the preparation method of CoCrCuFeNi high-entropy alloys, and the particle diameter of the TiCO powder is 1-100
Micron；Co powder, Cr powder, Cu powder, the particle diameter of Fe powder and Ni powder are 1-100 microns.
Beneficial effect：
The enhanced high-entropy alloy of particle of the present invention has more excellent electric conductivity, heat conductivility and mechanical property.Applicant
Respectively Example 1 prepare high-entropy alloy, embodiment 2 prepare high-entropy alloy, embodiment 3 prepare high-entropy alloy,
CoCrCuFeNi high-entropy alloys test the resistivity of each material, thermal conductivity and hardness, every group of survey 10 times, and test result is averaged
Value, and test result is recorded, it is shown in Table 1.
The performance test results of table 1
As seen from table, the high-entropy alloy prepared by embodiment 1,2,3 is superior in performances such as mechanical property, heat conduction, heat conduction
CoCrCuFeNi matrix alloys.
Brief description of the drawings
Fig. 1 is TiO particles enhancing CoCrCuFeNi high-entropy alloy XRDs；
Fig. 2 is TiO particles enhancing CoCrCuFeNi high-entropy alloy scanning electron microscope (SEM) photographs, and the wherein equiax crystal in magnification region is
For TiO.
With reference to embodiment, the present invention is further illustrated, but is not intended as to the foundation of the invention limited.
Embodiment 1.
Raw material proportioning：TiCO powder 1kg, Co powder 1kg, Cr powder 1kg, Cu powder 1kg, Fe powder 1kg and Ni powder 1kg.
Technique：It is 1450-1550 DEG C of bar in temperature after mixing by TiCO powder, Co powder, Cr powder, Cu powder, Fe powder and Ni powder
Under part, vacuum be 10Pa under, react 20min, produce, obtained high-entropy alloy XRD spectrum is shown in Fig. 1, and metallograph is shown in Fig. 2,
Equiax crystal wherein in magnification region is TiO.
Embodiment 2.
Raw material proportioning：TiCO powder 1.5kg, Co powder 1.2kg, Cr powder 1.2kg, Cu powder 1.2kg, Fe powder 1.2kg and Ni powder
1.2kg。
Technique：It is 1300-1400 DEG C of bar in temperature after mixing by TiCO powder, Co powder, Cr powder, Cu powder, Fe powder and Ni powder
Under part, vacuum is under 1Pa, reaction 30min produces.
Embodiment 3.
Raw material proportioning：TiCO powder 0.5kg, Co powder 0.8kg, Cr powder 0.8kg, Cu powder 0.8kg, Fe powder 0.8kg and Ni powder
0.8kg。
Technique：It is 1700-2000 DEG C of bar in temperature after mixing by TiCO powder, Co powder, Cr powder, Cu powder, Fe powder and Ni powder
Under part, under vacuum 8Pa, 10min is reacted, is produced.
Embodiment 4.
Raw material proportioning：Raw material proportioning：TiCO powder 1kg, Co powder 1.1kg, Cr powder 1.1kg, Cu powder 1.1kg, Fe powder 1.1kg and
Ni powder 1.1kg.
Technique：It is 1800-1900 DEG C of bar in temperature after mixing by TiCO powder, Co powder, Cr powder, Cu powder, Fe powder and Ni powder
Under part, under vacuum 7Pa, 15min is reacted, is produced.
Embodiment 5.
Raw material proportioning：TiCO powder 0.5kg, Co powder 1kg, Cr powder 1kg, Cu powder 1kg, Fe powder 1kg and Ni powder 1kg.
Technique：It is 1400-1500 DEG C of bar in temperature after mixing by TiCO powder, Co powder, Cr powder, Cu powder, Fe powder and Ni powder
Under part, under vacuum 7Pa, 20min is reacted, is produced.
Claims (9)
1. a kind of TiO particles strengthen CoCrCuFeNi high-entropy alloys, it is characterised in that：It is with the raw material system of following mol ratios
Into, 0.5-1.5 parts of TiCO powder, 0.8-1.2 parts of Co powder, 0.8-1.2 parts of Cr powder, 0.8-1.2 parts of Cu powder, 0.8-1.2 parts of Fe powder and
0.8-1.2 parts of Ni powder.
2. TiO particles as claimed in claim 1 strengthen CoCrCuFeNi high-entropy alloys, it is characterised in that：It is rubbed with following
You are made the raw material of proportioning, 1 part of 1 part of TiCO powder, 1 part of Co powder, 1 part of Cr powder, 1 part of Cu powder, 1 part of Fe powder and Ni powder.
3. a kind of TiO particles as claimed in claim 1 or 2 strengthen the preparation method of CoCrCuFeNi high-entropy alloys, its feature
It is：By TiCO powder, Co powder, Cr powder, Cu powder, Fe powder and Ni powder, after mixing, under the conditions of temperature is 1000-2000 DEG C, vacuum
Below 10Pa is spent, 10-30min is reacted, produces.
4. TiO particles according to claim 3 strengthen the preparation method of CoCrCuFeNi high-entropy alloys, it is characterised in that：
The temperature is 1300-1700 DEG C.
5. TiO particles according to claim 4 strengthen the preparation method of CoCrCuFeNi high-entropy alloys, it is characterised in that：
The temperature is 1400-1600 DEG C.
6. TiO particles according to claim 5 strengthen the preparation method of CoCrCuFeNi high-entropy alloys, it is characterised in that：
The temperature is 1500 DEG C.
7. TiO particles according to claim 3 strengthen the preparation method of CoCrCuFeNi high-entropy alloys, it is characterised in that：
The vacuum is 1-8Pa；Reaction time is 15-25min.
8. TiO particles according to claim 7 strengthen the preparation method of CoCrCuFeNi high-entropy alloys, it is characterised in that：
The vacuum is 2-6Pa；Reaction time is 20min.
9. TiO particles according to claim 3 strengthen the preparation method of CoCrCuFeNi high-entropy alloys, it is characterised in that：
The particle diameter of the TiCO powder is 1-100 microns；Co powder, Cr powder, Cu powder, the particle diameter of Fe powder and Ni powder are 1-100 microns.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108747006A (en) * | 2018-06-12 | 2018-11-06 | 贵州理工学院 | A kind of method for laser welding of CoCrCuFeNi high-entropy alloys |
| CN109290572A (en) * | 2018-09-29 | 2019-02-01 | 中国工程物理研究院材料研究所 | A kind of Laser Melting Deposition method of ceramics enhancing high-entropy alloy composite element |
| CN111514873A (en) * | 2019-02-01 | 2020-08-11 | 尚国龙 | High-entropy oxide/TiO2Preparation method of composite photocatalyst |
| CN113981487A (en) * | 2021-10-25 | 2022-01-28 | 成都大学 | High-entropy carbonate electrocatalyst and preparation method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108747006A (en) * | 2018-06-12 | 2018-11-06 | 贵州理工学院 | A kind of method for laser welding of CoCrCuFeNi high-entropy alloys |
| CN108747006B (en) * | 2018-06-12 | 2020-07-14 | 贵州理工学院 | Laser welding method of CoCrCuFeNi high-entropy alloy |
| CN109290572A (en) * | 2018-09-29 | 2019-02-01 | 中国工程物理研究院材料研究所 | A kind of Laser Melting Deposition method of ceramics enhancing high-entropy alloy composite element |
| CN111514873A (en) * | 2019-02-01 | 2020-08-11 | 尚国龙 | High-entropy oxide/TiO2Preparation method of composite photocatalyst |
| CN111514873B (en) * | 2019-02-01 | 2022-06-07 | 尚国龙 | High-entropy oxide/TiO2Preparation method of composite photocatalyst |
| CN113981487A (en) * | 2021-10-25 | 2022-01-28 | 成都大学 | High-entropy carbonate electrocatalyst and preparation method thereof |
| CN113981487B (en) * | 2021-10-25 | 2022-04-29 | 成都大学 | High-entropy carbonate electrocatalyst and preparation method thereof |
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