CN110504113A - A kind of addition zircon powder ZrSiO4Strengthen copper-based electrical contact material - Google Patents

A kind of addition zircon powder ZrSiO4Strengthen copper-based electrical contact material Download PDF

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Publication number
CN110504113A
CN110504113A CN201910773531.7A CN201910773531A CN110504113A CN 110504113 A CN110504113 A CN 110504113A CN 201910773531 A CN201910773531 A CN 201910773531A CN 110504113 A CN110504113 A CN 110504113A
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China
Prior art keywords
zrsio
electrical contact
addition
copper
powder
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Pending
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CN201910773531.7A
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Chinese (zh)
Inventor
郑立海
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HARBIN DONGDAGAO NEW MATERIAL CO Ltd
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HARBIN DONGDAGAO NEW MATERIAL CO Ltd
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Priority to CN201910773531.7A priority Critical patent/CN110504113A/en
Publication of CN110504113A publication Critical patent/CN110504113A/en
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Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00Contacts
    • H01H1/02Contacts characterised by the material thereof
    • H01H1/021Composite material
    • H01H1/025Composite material having copper as the basic material
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/04Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
    • H01H11/048Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts by powder-metallurgical processes

Abstract

The present invention provides a kind of addition ZrSiO4Reinforcing copper-based electrical contact material, by following mass percent at being grouped as: ZrSiO40.01-5%;Rare earth oxide 0-2%;Copper surplus.The present invention by addition Mohs' hardness be 7.8, the zircon ZrSiO that fusing point is 2550 DEG C4The hardness and arc ablation resistance performance of copper alloy are improved, makes Brinell hardness from 350-450MPa, is increased to Brinell hardness >=650MPa, while 0.1 μm of granularity of La can also be added2O3、Sm2O3、Yb2O3、Y2O3And Ce2O3Equal rare earth oxides can refine the crystal grain of contact material, the compactness of contact material be improved, to improve mechanical life.Electrical contact material of the invention has stronger chemical stability, has special anti-oxidant and sulfuration resistant performance.

Description

A kind of addition zircon powder ZrSiO4Strengthen copper-based electrical contact material
Technical field
The present invention provides a kind of addition zircon powder ZrSiO4Strengthen copper-based electrical contact material.
Background technique
Electrical contact is low-voltage electrical switch type element, such as AC/DC contactor, breaker and relay critical functionality Contact material, element are should have good conductive and heating conduction first to the Essential Performance Requirements of electrical contact material, Secondary is should have low contact resistance and low temperature rise, and third is that should have anti-melting welding and resistance to electrical wear.Copper conduction and it is thermally conductive Performance is only second to silver, and the mechanical strength of copper electrical contact is low, and arc ablation resistance performance is poor, and mechanical life is relatively low.
Summary of the invention
Based on the above shortcomings, the object of the present invention is to provide a kind of addition zircon powder ZrSiO4Strengthen copper-based electricity Contact material passes through addition zircon ZrSiO using copper as conductive first constituent element4By copper alloy, change the fibre of copper alloy Structure is tieed up, so as to improve the mechanical performance and electric property of electrical contact.
The technology used in the present invention is as follows: a kind of addition ZrSiO4Reinforcing copper-based electrical contact material, by following quality Percentage at being grouped as: ZrSiO40.01-5%;Rare earth oxide 0-2%;Copper surplus.
The present invention also has following technical characteristic:
1, the La that rare earth oxide as described above is 0.1 μm of granularity2O3, it is 1% containing mass percent.
2, the Y that rare earth oxide as described above is 0.1 μm of granularity2O3, it is 0.7% containing mass percent.
3, the Ce that rare earth oxide as described above is 0.1 μm of granularity2O3, it is 0.9% containing mass percent.
4, the Yb that rare earth oxide as described above is 0.1 μm of granularity2O3, it is 2% containing mass percent.
5, the Sm that rare earth oxide as described above is 0.1 μm of granularity2O3, it is 1.3% containing mass percent.
6, ZrSiO as described above4The zircon that for Mohs' hardness be 7.8, fusing point is 2550 DEG C.
7, strengthen the preparation method of copper-based electrical contact material as described above, it is as follows, raw material is put into double stirring cages by formula Screw machine formula mixes powder, and then ball mill mixes powder, and static pressure is waited to go out billet, and 10-3It burns within 900-1150 DEG C of high temperature of Pa high vacuum 8 hours Knot is squeezed into band, and 650-850 DEG C is annealed 6 hours, by being rolled into contact material.
8, preparation method as described above, raw material first mix powder 2 hours by double stirring cage screw machine formulas, and then ball mill mixes powder 24 Hour.
9, preparation method as described above, pressure are that the static pressure such as 230-280MPa go out billet.
Advantages of the present invention and the utility model has the advantages that by addition Mohs' hardness be 7.8, the zircon that fusing point is 2550 DEG C ZrSiO4It improves the hardness and arc ablation resistance performance of copper alloy, makes Brinell hardness from 350-450MPa, it is hard to be increased to Bu Shi Degree >=650MPa, while 0.1 μm of granularity of La can also be added2O3、Sm2O3、Yb2O3、Y2O3And Ce2O3Equal rare earth oxides energy The crystal grain for enough refining contact material, improves the compactness of contact material, to improve mechanical life.Electrical contact material of the invention Linear expansion coefficient be 5.0X10-6/ DEG C (200-1000 DEG C), since thermal expansion coefficient is small, material causes because of temperature change Volume change it is small, when especially generating electric arc when the electrical component of institute's compatibility is electrified for a long time or is opened and closed, the temperature that accordingly generates Degree stress is small, and thermal shock resistance is better.Electrical contact material of the invention has stronger chemical stability, with special anti-oxidant With sulfuration resistant performance.
Specific embodiment
The present invention is described further for citing below:
Embodiment 1:
A kind of addition zircon powder ZrSiO4Strengthen copper-based electrical contact material, by following mass percent at grouping At: ZrSiO40.3%;The La that 0.1 μm of granularity2O31%;Cu surplus.Performance parameter: density: 8.56g/cm3;Hardness: HB 675MPa;Resistivity: 2.65 μ Ω cm.
Embodiment 2:
A kind of addition zircon powder ZrSiO4Strengthen copper-based electrical contact material, by following mass percent at grouping At: ZrSiO42%;The Ce that 0.1 μm of granularity2O30.9%;Cu surplus.Performance parameter: density: 8.53g/cm3;Hardness: HB 686MPa;Resistivity: 2.70 μ Ω cm.
Embodiment 3:
A kind of addition zircon powder ZrSiO4Strengthen copper-based electrical contact material, by following mass percent at grouping At: ZrSiO45%;The Sm that 0.1 μm of granularity2O31.3%;Cu surplus.Performance parameter: density: 8.51g/cm3;Hardness: HB 691MPa;Resistivity: 2.73 μ Ω cm.
Embodiment 4:
A kind of addition zircon powder ZrSiO4Strengthen copper-based electrical contact material, by following mass percent at grouping At: ZrSiO43%;The Y that 0.1 μm of granularity2O30.7%;Cu surplus.Performance parameter: density: 8.30g/cm3;Hardness: HB 655MPa;Resistivity: 2.35 μ Ω cm.
Embodiment 5
A kind of addition zircon powder ZrSiO4Strengthen copper-based electrical contact material, by following mass percent at grouping At: ZrSiO42.5%;The Yb that 0.1 μm of granularity2O30.7%;Cu surplus.Performance parameter: density: 8.45g/cm3;Hardness: 651MPa;Resistivity: 2.55 μ Ω cm.
Embodiment 6
A kind of addition zircon powder ZrSiO4Strengthen copper-based electrical contact material, by following mass percent at grouping At: ZrSiO41.5%;Cu surplus.Performance parameter: density: 8.40g/cm3;Hardness: 665MPa;Resistivity: 2.35 μ Ω cm.
Embodiment 7
A kind of addition zircon powder ZrSiO4Strengthen copper-based electrical contact material, by following mass percent at grouping At: ZrSiO40.01%;Cu surplus.Performance parameter: density: 8.70g/cm3;Hardness: 670MPa;Resistivity: 2.40 μ Ω cm。
Embodiment 8
The preparation method of the reinforcing copper-based electrical contact material of embodiment 1-7: raw material is put into double stirring cage screw machines by formula Tool formula mixes powder 2 hours, and ball mill mixes powder 24 hours, and the static pressure such as 230-280MPa go out billet, and 10-3900-1150 DEG C of height of Pa high vacuum It is sintered within temperature 8 hours, it is 60-80mm thickness 5.0mm band that 12.5MN, which is squeezed into width, and 650-850 DEG C is annealed for 6 hours, by thick Roll, finish rolling and soft annealing are rolled down to the size of finished product requirement, contact material is made.

Claims (10)

1. a kind of addition ZrSiO4Reinforcing copper-based electrical contact material, which is characterized in that by following mass percent at grouping At: ZrSiO40.01-5%;Rare earth oxide 0-2%;Copper surplus.
2. a kind of addition zircon powder ZrSiO according to claim 14Strengthen copper-based electrical contact material, feature exists In: the La that the rare earth oxide is 0.1 μm of granularity2O3, it is 1% containing mass percent.
3. a kind of addition zircon powder ZrSiO according to claim 14Strengthen copper-based electrical contact material, feature exists In: the Y that the rare earth oxide is 0.1 μm of granularity2O3, it is 0.7% containing mass percent.
4. a kind of addition zircon powder ZrSiO according to claim 14Strengthen copper-based electrical contact material, feature exists In: the Ce that the rare earth oxide is 0.1 μm of granularity2O3, it is 0.9% containing mass percent.
5. a kind of addition zircon powder ZrSiO according to claim 14Strengthen copper-based electrical contact material, feature exists In: the Yb that the rare earth oxide is 0.1 μm of granularity2O3, it is 2% containing mass percent.
6. a kind of addition zircon powder ZrSiO according to claim 14Strengthen copper-based electrical contact material, feature exists In: the Sm that the rare earth oxide is 0.1 μm of granularity2O3, it is 1.3% containing mass percent.
7. a kind of addition zircon powder ZrSiO according to claim 14Strengthen copper-based electrical contact material, feature exists In: the ZrSiO4The zircon that for Mohs' hardness be 7.8, fusing point is 2550 DEG C.
8. a kind of addition zircon powder ZrSiO according to claim 1-74Strengthen copper-based electrical contact material Preparation method, which is characterized in that method is as follows, and raw material is put into double stirring cage screw machine formulas by formula and mixes powder, then ball mill Mixed powder waits static pressure to go out billet, and 10-3It is sintered within 900-1150 DEG C of high temperature of Pa high vacuum 8 hours, is squeezed into band, 650-850 DEG C of annealing 6 hours, by being rolled into contact material.
9. preparation method according to claim 8, which is characterized in that raw material first mix powder 2 hours by double stirring cage screw machine formulas, Then ball mill mixes powder 24 hours.
10. preparation method according to claim 8, which is characterized in that pressure is that the static pressure such as 230-280MPa go out billet.
CN201910773531.7A 2019-08-21 2019-08-21 A kind of addition zircon powder ZrSiO4Strengthen copper-based electrical contact material Pending CN110504113A (en)

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