CN104478440A - Ceramic material for bearing and preparation method of ceramic material - Google Patents
Ceramic material for bearing and preparation method of ceramic material Download PDFInfo
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- CN104478440A CN104478440A CN201410677871.7A CN201410677871A CN104478440A CN 104478440 A CN104478440 A CN 104478440A CN 201410677871 A CN201410677871 A CN 201410677871A CN 104478440 A CN104478440 A CN 104478440A
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- bearing
- ceramic material
- stupalith
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Abstract
The invention provides a ceramic material for a bearing and a preparation method of the ceramic material. The ceramic material is prepared from the following raw materials in parts by weight: 60-80 parts of Si3N4, 5-10 parts of Al2O3, 1-5 parts of sepiolite powder, 1-5 parts of attapulgite powder and 0.5-3 parts of a binder. Compared with the prior art, the ceramic material which is prepared from the Si3N4 is relatively high in bending strength and hardness, and meanwhile the ceramic material is self-lubricant, low in friction coefficient and relatively good in wear-resisting property. By virtue of a synergistic effect among the Al2O3, sepiolite powder and attapulgite powder which serve as raw materials as well, the wear-resisting property of the ceramic material for the bearing is enhanced. In addition, by preparing the ceramic material for the bearing through ball milling and sintering treatment, the precision of the product is guaranteed by virtue of the ball milling, and the economic benefit and working efficiency are greatly improved. Experimental results show that the ceramic material for the bearing prepared by the invention is relatively good in wear-resisting property.
Description
Technical field
The present invention relates to technical field of ceramic material, particularly relate to a kind of bearing stupalith and preparation method thereof.
Background technology
Bearing, as important mechanical basic part, is widely used in science and technology and economic every field.Along with the development of science and technology, the machine worked under some high-tech areas and some special Working environment, more and more higher to the requirement of bearing, common bearing materials can not be satisfied the demand again.Therefore, develop and seek new bearing materials to promoting that scientific-technical progress and Economic development have very important significance.
The performance of ceramic bearing material affects the most critical of bearing quality, topmost factor.In decades, the stupalith of aluminum oxide, silicon carbide, silicon nitride structure is in succession for the preparation of ceramic bearing in ceramic bearing invention.Research shows, in current stupalith, self-toughening ceramic is owing to having higher bending strength and fracture toughness property, and the failure mode of the bearing be made up of it is tired peeling off, and is considered to the more satisfactory bearing materials manufacturing bearing roller.
In prior art, application number be 200310114631.8 Chinese patent literature report a kind of titanium carbonitride base ceramic bearing materials using metal and powder as raw material, adopt liquid sintering technology by the content of adjustment system Raw component, prepared the dense material of applicable manufacture ceramic bearing ring, this material is by Ti-Ni-Co-Mo
2c-Cr
3c
2and Ti-Ni-Co-Mo-C-Cr
3c
2material system is formed.But the abrasion resistance properties of the dense material of this ceramic bearing ring is poor, thus work-ing life is shorter.
Summary of the invention
The technical problem that the present invention solves is to provide a kind of bearing stupalith and preparation method thereof, and this bearing stupalith abrasion resistance properties is better.
In view of this, the invention provides a kind of bearing stupalith, consist of the following composition:
Preferably, consist of the following composition:
Accordingly, the present invention also provides a kind of preparation method of bearing stupalith, comprises the following steps:
By 60 ~ 80 weight part Si
3n
4, 5 ~ 10 weight part Al
2o
3, 1 ~ 5 weight part sepiolite powder, 1 ~ 5 weight part Attapulgite stone flour and the mixing of 0.5 ~ 3 parts by weight binder, to inject in ball mill ball-milling processing 5 ~ 20 hours, after sintering, obtain bearing stupalith.
Preferably, the particle diameter of described sepiolite powder is 20 ~ 50 μm.
Preferably, the particle diameter of described Attapulgite stone flour is 70 ~ 90 μm.
Preferably, described binding agent by weight ratio be the dextrin of 0.5 ~ 1.5:2 ~ 3:20 ~ 29:10, carboxymethyl cellulose, distilled water and arab resin solution forms, the mass concentration of described arab resin solution is 8 ~ 9%.
Preferably, described Si
3n
4be 70 ~ 80 weight parts, Al
2o
3be 5 ~ 8 weight parts, sepiolite powder is 3 ~ 5 weight parts, and Attapulgite stone flour is 1 ~ 3 weight part, and binding agent is 1 ~ 2 weight part.
Preferably, described sintering step is specially:
Be warming up to 420 ~ 460 DEG C of insulations 2 ~ 3 hours, be then warming up to 600 ~ 650 DEG C of insulations 5 ~ 8 hours.
The invention provides a kind of bearing stupalith and preparation method thereof, prepared by following raw material: Si
3n
460 ~ 80 weight parts, Al
2o
35 ~ 10 weight parts, sepiolite powder 1 ~ 5 weight part, Attapulgite stone flour 1 ~ 5 weight part, binding agent 0.5 ~ 3 weight part.Compared with prior art, the present invention is with Si
3n
4as raw material, its flexural strength is higher, and hardness is also very high, and have self lubricity, frictional coefficient is little simultaneously, has good abrasion resistance properties.The present invention is also with Al
2o
3, sepiolite powder and Attapulgite stone flour be raw material, utilize synergy each other, improve the abrasion resistance properties of this bearing stupalith.In addition, the present invention adopts ball milling and sintering processes, namely obtains bearing stupalith, and ball-milling processing more can guarantee the precision of product, greatly increases economic benefit and working efficiency.Experimental result shows, the abrasion resistance properties of bearing stupalith prepared by the present invention is better, and work-ing life is longer.
Embodiment
In order to understand the present invention further, below in conjunction with embodiment, the preferred embodiment of the invention is described, but should be appreciated that these describe just for further illustrating the features and advantages of the present invention, instead of limiting to the claimed invention.
The embodiment of the invention discloses a kind of bearing stupalith, consist of the following composition:
Preferably, the ceramic material of described bearing consists of the following composition:
Silicon nitride has the cancellated atomic crystal of space multistory, and character is as follows: hardness is high, and frictional coefficient is little, has self lubricity, is extremely excellent high-abrasive material; Creep resistance is high, and coefficient of thermal expansion is little, and thermal shock resistance is best in pottery; Chemical stability is good, and except hydrofluoric acid, the corrosion of the various acid of ability, chloroazotic acid and alkali lye, also can the erosion of resist melt metal; Silicon nitride is covalent linkage crystal, both without unbound electron also without ion, there is excellent electrical insulation capability.
Using aluminum oxide as the component of stupalith, the intensity of the pottery of formation is high, and be 2 ~ 6 times of conventional ceramic, tensile strength can reach 250MPa; Wear resistance is good, and hardness is inferior to diamond, norbide, cubic boron nitride and silicon carbide; Resistance to elevated temperatures is good, can long term operation at 1600 DEG C, and aerial maximum operation (service) temperature reaches 1980 DEG C; Solidity to corrosion and good insulating.
Sepiolite can be divided into hot-liquid type sepiolite and appositional pattern sepiolite two type according to the reason formed, and is commonly referred to α-type sepiolite and β-type sepiolite.Hot-liquid type sepiolite ore deposit is formed by hydrothermal solution direct crystallization or by volcanic glass, form through low temperature hot liquid alteration containing the mineral of magnesium, often originate in be rich in magnesium dolomitic limestone, in dolomitic marble stone; Normal and the carbonatite of appositional pattern sepiolite deposit, tonstein symbiosis, generated by diagenesis.Hot-liquid type sepiolite is fibre bundle shape, MgO (magnesium oxide) and SiO
2(silicon-dioxide) content is high, Al
2o
3(aluminum oxide) content is low, is Mg-rich sepiolite; Appositional pattern sepiolite is argillaceous, but observes still in threadiness under an electron microscope, modified meerschaum Al
2o
3content is high, Mg and SiO
2content is low, is rich aluminium sepiolite.The present invention preferably uses particle diameter to be the sepiolite powder of 20 ~ 50 microns, is more preferably 25 ~ 40 microns.Sepiolite powder effect through activation treatment is better, has the effect strengthening abrasion resistance properties.The present invention preferably makes acid activation, and such as working concentration is that the sulfuric acid of 0.1 ~ 20% is at temperature 20 ~ 100 DEG C of immersion treatment 1 ~ 15h.
Attapulgite is oblique system, and its desirable chemical formula is; Mg
5(H
2o)
4[Si
4o
10]
2(OH)
2, chemical composition theoretical value is MgO 23.83%, SiO
256.96%, H
2o 19.21%.The attapulgite of occurring in nature often has Al
3+, Fe
3+deng isomorphous replacement, rich Al
3+, Fe
3+mutation be called aluminium attapulgite and iron attapulgite.Composition as the aluminium Attapulgite stone flour of Xuyi County of Jiangsu Province Dragon King mountain products is SiO
258.38%, MgO 12.10%, Al
2o
39.50%, CaO 0.40%, TiO
20.56%, MnO 0.05%, Fe
2o
3+ FeO 5.26%, Na
2o 1.10%, K
2o1.24%.The present invention preferably adopts the Attapulgite stone flour after acid activation process, and the particle diameter of this Attapulgite stone flour is preferably 70 ~ 90 μm, is more preferably 75 ~ 85 μm.
According to the present invention, described binding agent by weight ratio be the dextrin of 0.5 ~ 1.5:2 ~ 3:20 ~ 29:10, carboxymethyl cellulose, distilled water and arab resin solution forms, the mass concentration of described arab resin solution is 8 ~ 9%.
The present invention is with Si
3n
4, Al
2o
3, sepiolite powder, Attapulgite stone flour, binding agent be raw material, utilize synergy each other, improve the abrasion resistance properties of this bearing stupalith.
Accordingly, the present invention also provides a kind of preparation method of bearing stupalith, comprises the following steps: by 60 ~ 80 weight part Si
3n
4, 5 ~ 10 weight part Al
2o
3, 1 ~ 5 weight part sepiolite powder, 1 ~ 5 weight part Attapulgite stone flour and the mixing of 0.5 ~ 3 parts by weight binder, to inject in ball mill ball-milling processing 5 ~ 20 hours, after sintering, obtain bearing stupalith.
In the process preparing bearing stupalith, described sintering step is specially: be warming up to 420 ~ 460 DEG C of insulations 2 ~ 3 hours, then 600 ~ 650 DEG C of insulations 5 ~ 8 hours are warming up to, be more preferably: be warming up to 420 ~ 450 DEG C of insulations 2 ~ 3 hours, be then warming up to 600 ~ 630 DEG C of insulations 5 ~ 8 hours.The sintering process that the present invention preferably adopts the two-stage to heat up, that is: first 420 ~ 460 DEG C of insulations, ensure its densified sintering product, is conducive to the dense sintering controlling sintering shrinkage and be conducive to material.Then be warming up to 600 ~ 650 DEG C of insulations 5 ~ 8 hours, the further sintering densification of material, ensures the abrasion resistance properties of this stupalith.
The raw material that the present invention adopts is preferably: described Si
3n
4be 70 ~ 80 weight parts, Al
2o
3be 5 ~ 8 weight parts, sepiolite powder is 3 ~ 5 weight parts, and Attapulgite stone flour is 1 ~ 3 weight part, and binding agent is 1 ~ 2 weight part, preferred, described Si
3n
4be 70 ~ 75 weight parts, Al
2o
3be 5 ~ 6 weight parts, sepiolite powder is 4 ~ 5 weight parts, and Attapulgite stone flour is 1 ~ 2 weight part, and binding agent is 1 ~ 2 weight part.
Adopt the stupalith that preparation method of the present invention obtains, then make various bearing, abrasion resistance properties is better, and work-ing life is longer.
In order to understand the present invention further, be described in detail to technical scheme provided by the invention below in conjunction with embodiment, protection scope of the present invention is not limited by the following examples.
Embodiment 1
Be the mixing of the dextrin of 1:2:25:10, carboxymethyl cellulose, distilled water and arab resin solution by weight ratio, the mass concentration of described arab resin solution is 8%, obtains binding agent.
By 60g Si
3n
4, 8g Al
2o
3, to be sepiolite powder, the 3g particle diameter of 40 μm be 80 μm of Attapulgite stone flours and the above-mentioned preparation of 1g of 3g particle diameter binding agent mixing, ball milling 10 hours in injection ball mill, be warming up to 430 DEG C of insulations 3 hours, be then warming up to 620 DEG C of insulations and obtain bearing stupalith after 6 hours.
Performance Detection is carried out to bearing stupalith prepared by the present embodiment.
Getting bearing stupalith prepared by the present embodiment is bonded on carbon steel coupon, flat with emery wheel grinding, and be then mounted on the upper pin tribometer of dish, test according to ASTM G99-95a, obtaining average friction coefficient COF is 0.096; Within 24 hours, the grinding degree of depth is 2 microns.
Embodiment 2
Be the mixing of the dextrin of 0.5:2:20:10, carboxymethyl cellulose, distilled water and arab resin solution by weight ratio, the mass concentration of described arab resin solution is 8%, obtains binding agent.
By 80g Si
3n
4, 8g Al
2o
3, to be sepiolite powder, the 1g particle diameter of 40 μm be 80 μm of Attapulgite stone flours and the above-mentioned preparation of 2g of 1g particle diameter binding agent mixing, ball milling 10 hours in injection ball mill, be warming up to 430 DEG C of insulations 3 hours, be then warming up to 620 DEG C of insulations and obtain bearing stupalith after 6 hours.
Performance Detection is carried out to bearing stupalith prepared by the present embodiment.
Getting bearing stupalith prepared by the present embodiment is bonded on carbon steel coupon, flat with emery wheel grinding, and be then mounted on the upper pin tribometer of dish, test according to ASTM G99-95a, obtaining average friction coefficient COF is 0.092; Within 24 hours, the grinding degree of depth is 3 microns.
Embodiment 3
Be the mixing of the dextrin of 0.5:2:20:10, carboxymethyl cellulose, distilled water and arab resin solution by weight ratio, the mass concentration of described arab resin solution is 8%, obtains binding agent.
By 60g Si
3n
4, 8g Al
2o
3, to be sepiolite powder, the 5g particle diameter of 40 μm be 80 μm of Attapulgite stone flours and the above-mentioned preparation of 3g of 3g particle diameter binding agent mixing, ball milling 10 hours in injection ball mill, be warming up to 430 DEG C of insulations 3 hours, be then warming up to 620 DEG C of insulations and obtain bearing stupalith after 6 hours.
Performance Detection is carried out to bearing stupalith prepared by the present embodiment.
Getting bearing stupalith prepared by the present embodiment is bonded on carbon steel coupon, flat with emery wheel grinding, and be then mounted on the upper pin tribometer of dish, test according to ASTM G99-95a, obtaining average friction coefficient COF is 0.094; Within 24 hours, the grinding degree of depth is 2.8 microns.
Embodiment 4
Be the mixing of the dextrin of 1.5:2:28:10, carboxymethyl cellulose, distilled water and arab resin solution by weight ratio, the mass concentration of described arab resin solution is 8%, obtains binding agent.
By 70g Si
3n
4, 6g Al
2o
3, to be sepiolite powder, the 1g particle diameter of 40 μm be 80 μm of Attapulgite stone flours and the above-mentioned preparation of 2g weight part of 4g particle diameter binding agent mixing, ball milling 10 hours in injection ball mill, be warming up to 430 DEG C of insulations 3 hours, be then warming up to 620 DEG C of insulations and obtain bearing stupalith after 6 hours.
Performance Detection is carried out to bearing stupalith prepared by the present embodiment.
That gets prepared by the present embodiment shouts on carbon steel coupon in bearing stupalith year, and flat with emery wheel grinding, be then mounted on the upper pin tribometer of dish, test according to ASTM G99-95a, obtaining average friction coefficient COF is 0.090; Within 24 hours, the grinding degree of depth is 2.1 microns.
The explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1. a bearing stupalith, is characterized in that, consists of the following composition:
2. bearing stupalith according to claim 1, is characterized in that, consist of the following composition:
3. a preparation method for bearing stupalith, is characterized in that, comprises the following steps:
By 60 ~ 80 weight part Si
3n
4, 5 ~ 10 weight part Al
2o
3, 1 ~ 5 weight part sepiolite powder, 1 ~ 5 weight part Attapulgite stone flour and the mixing of 0.5 ~ 3 parts by weight binder, to inject in ball mill ball-milling processing 5 ~ 20 hours, after sintering, obtain bearing stupalith.
4. preparation method according to claim 3, is characterized in that, the particle diameter of described sepiolite powder is 20 ~ 50 μm.
5. preparation method according to claim 3, is characterized in that, the particle diameter of described Attapulgite stone flour is 70 ~ 90 μm.
6. preparation method according to claim 3, it is characterized in that, described binding agent by weight ratio be the dextrin of 0.5 ~ 1.5:2 ~ 3:20 ~ 29:10, carboxymethyl cellulose, distilled water and arab resin solution forms, the mass concentration of described arab resin solution is 8 ~ 9%.
7. preparation method according to claim 3, is characterized in that, described Si
3n
4be 70 ~ 80 weight parts, Al
2o
3be 5 ~ 8 weight parts, sepiolite powder is 3 ~ 5 weight parts, and Attapulgite stone flour is 1 ~ 3 weight part, and binding agent is 1 ~ 2 weight part.
8. preparation method according to claim 3, is characterized in that, described sintering step is specially:
Be warming up to 420 ~ 460 DEG C of insulations 2 ~ 3 hours, be then warming up to 600 ~ 650 DEG C of insulations 5 ~ 8 hours.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106011578A (en) * | 2016-05-06 | 2016-10-12 | 陈昌 | Metal ceramic composite material and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014091665A1 (en) * | 2012-12-11 | 2014-06-19 | ニチアス株式会社 | Insulation material and method of manufacturing same |
| CN103922750A (en) * | 2014-04-18 | 2014-07-16 | 淄博大方新材料科技有限公司 | Wear-resistant silicon nitride ceramic material and preparation method thereof |
-
2014
- 2014-11-21 CN CN201410677871.7A patent/CN104478440B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014091665A1 (en) * | 2012-12-11 | 2014-06-19 | ニチアス株式会社 | Insulation material and method of manufacturing same |
| CN103922750A (en) * | 2014-04-18 | 2014-07-16 | 淄博大方新材料科技有限公司 | Wear-resistant silicon nitride ceramic material and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106011578A (en) * | 2016-05-06 | 2016-10-12 | 陈昌 | Metal ceramic composite material and preparation method thereof |
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Inventor after: Lv Guimin Inventor before: Chen Fan |
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Effective date of registration: 20170517 Address after: 528100 Industrial Park, Leping Town, Sanshui District, Guangdong, Foshan Patentee after: Foshan Sanshui Jinying Inorganic Materials Co., Ltd. Address before: And the industrial district of Liuzhou City, the Guangxi Zhuang Autonomous Region Hongkong city 545000 Parc court Lane 4 Building No. 3 Patentee before: LIUZHOU CHUANGYU TECHNOLOGY CO., LTD. |
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Address after: 529241 No.8, west area, Nafu Industrial Park, Shenjing Town, Taishan City, Jiangmen City, Guangdong Province (Information Declaration System) Patentee after: Guangdong elite inorganic materials Co.,Ltd. Address before: 528100 Industrial Park, Leping Town, Sanshui District, Guangdong, Foshan Patentee before: FOSHAN SANSHUI GOLDEN EAGLE INORGANIC MATERIAL Co.,Ltd. |