CN102826837A - LaMgAl11O19-ZrO2-Al2O3 complex-phase wear-resistant ceramic material - Google Patents

LaMgAl11O19-ZrO2-Al2O3 complex-phase wear-resistant ceramic material Download PDF

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CN102826837A
CN102826837A CN2012103343574A CN201210334357A CN102826837A CN 102826837 A CN102826837 A CN 102826837A CN 2012103343574 A CN2012103343574 A CN 2012103343574A CN 201210334357 A CN201210334357 A CN 201210334357A CN 102826837 A CN102826837 A CN 102826837A
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powder
zro
lamgal
wear
zro2
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文瑞龙
房明浩
闵鑫
黄朝晖
刘艳改
唐浩
唐潮
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China University of Geosciences
China University of Geosciences Beijing
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China University of Geosciences Beijing
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Abstract

The invention relates to a high-wear-resistance LaMgAl11O19-ZrO2-Al2O3 complex-phase wear-resistant ceramic material, and belongs to the technical field of structural ceramic and high-temperature composite materials. The LaMgAl11O19-ZrO2-Al2O3 complex-phase wear-resistant ceramic material is prepared by taking ZrO2 powder, LaMgAl11O19 powder and Al2O3 powder as raw materials through pressureless sintering. The higher fracture toughness of the material is obtained by controlling the addition amounts of ZrO2 and LaMgAl11O19 and the sintering temperature, and the high-temperature erosive wear resistance properties of the material are improved. The high-temperature gas-solid flow erosive wear resistance properties of the material are better than those of commonly used alumina ceramics, and the material can also replace low-carbon steel, heat-resistant alloy steel and cemented carbide to be applied to erosive wear resistance materials of various wearing parts (such as airflow transport material pipes and high temperature flue gas material transport pipes).

Description

A kind of LaMgAl 11O 19-ZrO 2-Al 2O 3The multi-phase wear-resistant stupalith
Technical field
The present invention relates to a kind of through adding LaMgAl 11O 19Brilliant material of sheet and ZrO 2Preparation LaMgAl 11O 19-ZrO 2-Al 2O 3The multi-phase wear-resistant stupalith belongs to special cermacis and high temperature composite technical field.
Background technology
Wearing and tearing are one of principal modes of material damage, in the modern industrial, have a strong impact on the work-ing life and the use properties of industrial instrumentation and device.Wear medium mainly is divided into gas-liquid-solid three-phase, and aborning, wear medium exists with heterogeneous, mainly is the abrasive wear of the gentle liquid-solid three-phase coexistence of erosive wear of gas-liquid two-phase coexistence and gas-solid two-phase coexistent.Erosive wear and abrasive wear are the main collapse modes of wearing and tearing.Extensively be present in the industrial production, for example: in the petroleum chemical plant flue gas generating set, the broken catalyzer powder that high-temperature flue gas is carried secretly can cause serious erosive wear to the turbine vane that reclaims the overfire air stream energy and relevant flow passage part etc.; Abrasive material causes abrasive wear to the scraper conveyor chute in the coal mine machinery; The water flow drives grains of sand are to wearing and tearing of parts such as hydroelectric generator impeller and gear etc.These type of wearing and tearing do great damage to mechanical component, and material property is reduced, and the life-span reduces, and need often carry out short-term and safeguard, cause serious economy loss to enterprise, influence the people's orthobiosis simultaneously.
Since wearing and tearing are paid close attention in industrial production; Be that to add elements such as W, Co, Mo in the superalloy of base be main alloy material with Ni-Gr; Mainly be used as high-abrasive material and solve wear-out failure in the industry, because the production cost of alloy material is higher, stupalith is with its excellent performance and lower production cost; Replaced alloy material gradually, appeared in industrial instrumentation and the part as the high-abrasive material of a new generation.
The maximum high-abrasive material of research mainly is Al at present 2O 3Base complex phase ceramic material and ZrO 2The base complex phase ceramic material, Al 2O 3Base and ZrO 2The base complex phase ceramic material improves on mechanical property, and can be used as general high-abrasive material and use, but the instrument and the device of having relatively high expectations for wear resisting property, Al 2O 3Base and ZrO 2The base complex phase ceramic material can not meet the demands.Therefore, this research is at Al 2O 3Base and ZrO 2On the base complex phase ceramic material foundation, utilize the technological principle and the synthetic thought of composite ceramics, added LaMgAl 11O 19The brilliant material of sheet makes LaMgAl 11O 19-ZrO 2-Al 2O 3The multi-phase wear-resistant stupalith obtains bigger fracture toughness property and folding strength, to replace some wear-resistant devices, decreases material as a kind of novel wear resistant.
Summary of the invention
Shortcoming and Al such as main purpose of the present invention is high to modern anti-abrasive material cost, and abrasion resistance properties is relatively poor 2O 3Base and ZrO 2Problems such as base complex phase ceramic fret wear poor performance, intensity are low, poor toughness propose a kind of LaMgAl 11O 19-ZrO 2-Al 2O 3The multi-phase wear-resistant stupalith.The present invention is with homemade ZrO 2And LaMgAl 11O 19Be raw material.Addition through control ZrO2 and LaMgAl11O19 makes it be evenly distributed in Al 2O 3In the matrix, and make material obtain higher fracture toughness property, further improve the abrasion resistance properties of material through controlling suitable sintering temperature.
The present invention proposes a kind of LaMgAl 11O 19-ZrO 2-Al 2O 3The multi-phase wear-resistant stupalith.It is characterized in that: with ZrO 2Powder and Al 2O 3Powder is that 2vol.%～30vol.% prepares burden according to zirconic add-on, again with LaMgAl 11O 19Powder and ZrO 2, Al 2O 3Mixed powder is pressed LaMgAl 11O 19Add-on 2vol.%～50vol.% prepare burden; The back adopts the ball milling wet method to place planetary ball mill ball milling 6-24h; Mix after 90 ℃ of evaporations of Rotary Evaporators place baking oven 120 ℃ of oven dry, after grind, 200 orders sieve to handle and obtain mixed powder.Adopt dry pressing under 10-50MPa, to obtain the sample base substrate, handle obtaining base substrate then through the 200MPa isostatic cool pressing, adopt pressureless sintering method under 1250 ℃ of-1650 ℃ of conditions, to be incubated 6h at last, naturally cool to room temperature, can obtain LaMgAl 11O 19-ZrO 2-Al 2O 3The multi-phase wear-resistant stupalith.
In the preparation technology of above-mentioned materials, described ZrO 2Powder is with ZrO (NO 3) 22H 2O and ammoniacal liquor are raw material, adopt in-situ hydrolysis method hydrolysis 1～24h at normal temperatures, and prepare at 600～1000 ℃ of calcining 1～24h.Described LnMgAl 11O 19Powder raw material is with Mg (OH) 2, Al (OH) 3With rare earth oxide be raw material (it is pure to be chemical analysis), prepare burden according to stoichiometric ratio, carry out ball mill mixing 4～48h; With the mixture behind the ball milling after drying; After 1400 ℃-1700 ℃ insulation 1～24h were synthetic, the powder pulverizing and jevigating with after synthetic obtained en plaque structure LaMgAl 11O 19Powder.
LaMgAl of the present invention 11O 19-ZrO 2-Al 2O 3The bending strength of ceramic composite reaches as high as 650MPa, and fracture toughness property reaches as high as 6.98MPam 1/2, normal temperature erosive wear rate reaches 0.010mm 3/ g; Aluminum oxide series and zirconium white series ceramic that performance all is superior to using always also can replace soft steel, heat-resisting alloy steel and wimet to be applied to the erosion-wear-resisting material of various easy-abrasion parts (like air-flow transported material pipeline, high-temperature flue gas material conveying pipe etc.).
Below in conjunction with instance characteristics of the present invention are done to further describe, but be not only to be confined to following case study on implementation.
Case study on implementation 1:
With ZrO (NO 3) 22H 2O and ammoniacal liquor are raw material, mix by a certain percentage, through original flavor hydrolysis 8h, and in baking oven, dry, and pressureless sintering is carried out in 600 ℃ of insulation 14h in the oven dry back, and the back is ground to sieve and obtained ZrO 2Powder.
With analytically pure Al (OH) 3, Mg (OH) 2, La 2O 3As experimental raw, press LaMgAl 11O 19Stoichiometric ratio design batching, back ball milling 8h take out and dry, under 1400 ℃ of conditions, be incubated 4h respectively, the calcining synthetic powder, the powder after synthetic is through pulverizing the LaMgAl that grinding makes the en plaque structure 11O 19Powder.
With ZrO 2Powder and Al 2O 3Powder is that raw material is 5: 95 mixes by volume, with LaMgAl 11O 19With ZrO 2, Al 2O 3Mixed powder is 10: 90 batchings by volume; Be that ball-milling medium, absolute ethyl alcohol are ball milling agent wet ball grinding 8h then with the agate ball; Mix after 90 ℃ of evaporations of Rotary Evaporators place baking oven 120 ℃ of oven dry, after grind, 200 orders sieve to handle and obtain mixed powder.
Adopt dry pressing under 20MPa, to obtain the sample base substrate, handle obtaining base substrate then through the 200MPa isostatic cool pressing, adopt pressureless sintering method under 1300 ℃ of conditions, to be incubated 6h at last, naturally cool to room temperature, can obtain wear-resistant LaMgAl 11O 19-ZrO 2-Al 2O 3Diphase ceramic material.
To the LaMgAl that obtains 11O 19-ZrO 2-Al 2O 3Diphase ceramic material is tested, and recording ceramic bending strength is 403MPa, and fracture toughness property is 5.06MPam 1/2, normal temperature erosive wear volume wear rate is 0.026mm 3/ g.
Case study on implementation 2:
With ZrO (NO 3) 22H 2O and ammoniacal liquor are raw material, mix by a certain percentage, through original flavor hydrolysis 6h, and in baking oven, dry, and pressureless sintering is carried out in 800 ℃ of insulation 10h in the oven dry back, and the back is ground to sieve and obtained ZrO 2Powder.
With analytically pure Al (OH) 3, Mg (OH) 2, La 2O 3As experimental raw, press LaMgAl 11O 19Stoichiometric ratio design batching, back ball milling 12h take out and dry, under 1500 ℃ of conditions, be incubated 8h respectively, the calcining synthetic powder, the powder after synthetic is through pulverizing the LaMgAl that grinding makes the en plaque structure 11O 19Powder.
With ZrO 2Powder and Al 2O 3Powder is that raw material is 10: 90 mixes by volume, with LaMgAl 11O 19With ZrO 2, Al 2O 3Mixed powder is 20: 80 batchings by volume; Be that ball-milling medium, absolute ethyl alcohol are ball milling agent wet ball grinding 8h then with the agate ball; Mix after 90 ℃ of evaporations of Rotary Evaporators place baking oven 120 ℃ of oven dry, after grind, 200 orders sieve to handle and obtain mixed powder.
Adopt dry pressing under 30MPa, to obtain the sample base substrate, handle obtaining base substrate then through the 200MPa isostatic cool pressing, adopt pressureless sintering method under 1400 ℃ of conditions, to be incubated 8h at last, naturally cool to room temperature, can obtain wear-resistant LaMgAl 11O 19-ZrO 2-Al 2O 3Diphase ceramic material.
To the LaMgAl that obtains 11O 19-ZrO 2-Al 2O 3Diphase ceramic material is tested, and recording ceramic bending strength is 432MPa, and fracture toughness property is 5.67MPam 1/2, normal temperature erosive wear volume wear rate is 0.018mm 3/ g.
Case study on implementation 3:
With ZrO (NO 3) 22H 2O and ammoniacal liquor are raw material, mix by a certain percentage, through original flavor hydrolysis 4h, and in baking oven, dry, and pressureless sintering is carried out in 900 ℃ of insulation 8h in the oven dry back, and the back is ground to sieve and obtained ZrO 2Powder.
With analytically pure Al (OH) 3, Mg (OH) 2, La 2O 3As experimental raw, press LaMgAl 11O 19Stoichiometric ratio design batching, back ball milling 16h take out and dry, under 1600 ℃ of conditions, be incubated 12h respectively, the calcining synthetic powder, the powder after synthetic is through pulverizing the LaMgAl that grinding makes the en plaque structure 11O 19Powder.
With ZrO 2Powder and Al 2O 3Powder is that raw material is 15: 85 mixes by volume, with LaMgAl 11O 19With ZrO 2, Al 2O 3Mixed powder is that ball-milling medium, absolute ethyl alcohol are ball milling agent wet ball grinding 8h with the agate ball by 30: 70 batchings then, mix after 90 ℃ of evaporations of Rotary Evaporators place baking oven 120 ℃ of oven dry, after grind, 200 orders sieve to handle and obtain mixed powder.
Adopt dry pressing under 40MPa, to obtain the sample base substrate, handle obtaining base substrate then through the 200MPa isostatic cool pressing, adopt pressureless sintering method under 1500 ℃ of conditions, to be incubated 10h at last, naturally cool to room temperature, can obtain wear-resistant LaMgAl 11O 19-ZrO 2-Al 2O 3Diphase ceramic material.
To the LaMgAl that obtains 11O 19-ZrO 2-Al 2O 3Diphase ceramic material is tested, and recording ceramic bending strength is 650MPa, and fracture toughness property is 6.98MPam 1/2, normal temperature erosive wear volume wear rate is 0.010mm 3/ g.
Case study on implementation 4:
With ZrO (NO 3) 22H 2O and ammoniacal liquor are raw material, mix by a certain percentage, through original flavor hydrolysis 2h, and in baking oven, dry, and pressureless sintering is carried out in 1000 ℃ of insulation 4h in the oven dry back, and the back is ground to sieve and obtained ZrO 2Powder.
With analytically pure Al (OH) 3, Mg (OH) 2, La 2O 3As experimental raw, press LaMgAl 11O 19Stoichiometric ratio design batching, back ball milling 16h take out and dry, under 1700 ℃ of conditions, be incubated 12h respectively, the calcining synthetic powder, the powder after synthetic is through pulverizing the LaMgAl that grinding makes the en plaque structure 11O 19Powder.
With ZrO 2Powder and Al 2O 3Powder is that raw material is 20: 80 mixes by volume, with LaMgAl 11O 19With ZrO 2, Al 2O 3Mixed powder is 40: 60 batchings by volume; Be that ball-milling medium, absolute ethyl alcohol are ball milling agent wet ball grinding 8h then with the agate ball; Mix after 90 ℃ of evaporations of Rotary Evaporators place baking oven 120 ℃ of oven dry, after grind, 200 orders sieve to handle and obtain mixed powder.
Adopt dry pressing under 50MPa, to obtain the sample base substrate, handle obtaining base substrate then through the 200MPa isostatic cool pressing, adopt pressureless sintering method under 1600 ℃ of conditions, to be incubated 12h at last, naturally cool to room temperature, can obtain wear-resistant LaMgAl 11O 19-ZrO 2-Al 2O 3Diphase ceramic material.
To the LaMgAl that obtains 11O 19-ZrO 2-Al 2O 3Diphase ceramic material is tested, and recording ceramic bending strength is 613MPa, and fracture toughness property is 6.23MPam 1/2, normal temperature erosive wear volume wear rate is 0.013mm 3/ g.

Claims (2)

1. LaMgAl 11O 19-ZrO 2-Al 2O 3The multi-phase wear-resistant stupalith is characterized in that: with ZrO 2Powder and Al 2O 3Powder is that 2vol.%～30vol.% prepares burden according to zirconic add-on, again with LaMgAl 11O 19Powder and ZrO 2, Al 2O 3Mixed powder is pressed LaMgAl 11O 19Add-on is that 2vol.%～50vol.% prepares burden; The back adopts the ball milling wet method to place planetary ball mill ball milling 6-24h; Mix after 90 ℃ of evaporations of Rotary Evaporators place baking oven 120 ℃ of oven dry, after grind, 200 orders sieve to handle and obtain mixed powder.Adopt dry pressing under 10-50MPa, to obtain the sample base substrate, handle obtaining base substrate then through the 200MPa isostatic cool pressing, adopt pressureless sintering method under 1250 ℃ of-1650 ℃ of conditions, to be incubated 6h at last, naturally cool to room temperature, can obtain LaMgAl 11O 19-ZrO 2-Al 2O 3The multi-phase wear-resistant stupalith.
2. according to claims 1 described a kind of LaMgAl 11O 19-ZrO 2-Al 2O 3The multi-phase wear-resistant stupalith is characterized in that: described ZrO 2Powder is with ZrO (NO 3) 22H 2O and ammoniacal liquor are raw material, adopt in-situ hydrolysis method hydrolysis 1～24h at normal temperatures, and prepare at 600～1000 ℃ of calcining 1～24h.Described LaMgAl 11O 19Powder raw material is with Mg (OH) 2, Al (OH) 3With rare earth oxide be raw material (it is pure to be chemical analysis), prepare burden according to stoichiometric ratio, carry out ball mill mixing 4～48h; With the mixture behind the ball milling after drying; After 1400 ℃-1700 ℃ insulation 1～24h were synthetic, the powder pulverizing and jevigating with after synthetic obtained en plaque structure LaMgAl 11O 19Powder.
CN2012103343574A 2012-09-12 2012-09-12 LaMgAl11O19-ZrO2-Al2O3 complex-phase wear-resistant ceramic material Pending CN102826837A (en)

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Cited By (3)

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Publication number Priority date Publication date Assignee Title
CN106025349A (en) * 2016-07-28 2016-10-12 上海应用技术学院 Preparation method of LiBaLaZrREAlO solid electrolyte
CN115849884A (en) * 2022-11-17 2023-03-28 新化县顺达电子陶瓷有限公司 High-strength alumina ceramic material and preparation method thereof
CN116217255A (en) * 2023-03-02 2023-06-06 新化县顺达电子陶瓷有限公司 High-precision ceramic material for 5G signal base station and preparation method thereof

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CN101928144A (en) * 2010-09-01 2010-12-29 中国地质大学（北京） LaMgAl11O19-8YSZ complex phase ceramic and preparation method thereof
CN102276240A (en) * 2011-06-03 2011-12-14 河南中隆科技有限责任公司 Novel flexible wear resistant ceramic material and its preparation method
CN102603293A (en) * 2011-12-27 2012-07-25 中国地质大学（北京） Preparation method for high-temperature erosion and abrasion resistant LnMgAl11O19-ZrO2 composite ceramic material

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CN101073939A (en) * 2007-06-18 2007-11-21 湖南华联特种陶瓷有限公司 Toughened alumina ceramic overlapping curved pipe of high-performance zirconium oxide and its production
CN101182196A (en) * 2007-11-21 2008-05-21 内蒙古科技大学 Method for preparing magnesium-based lanthanum aluminate thermal barrier coating
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106025349A (en) * 2016-07-28 2016-10-12 上海应用技术学院 Preparation method of LiBaLaZrREAlO solid electrolyte
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CN115849884B (en) * 2022-11-17 2023-08-25 新化县顺达电子陶瓷有限公司 High-strength alumina ceramic material and preparation method thereof
CN116217255A (en) * 2023-03-02 2023-06-06 新化县顺达电子陶瓷有限公司 High-precision ceramic material for 5G signal base station and preparation method thereof
CN116217255B (en) * 2023-03-02 2023-12-15 新化县顺达电子陶瓷有限公司 High-precision ceramic material for 5G signal base station and preparation method thereof

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