SE465084B - ALUMINIUMTITANATKERAMIK - Google Patents
ALUMINIUMTITANATKERAMIKInfo
- Publication number
- SE465084B SE465084B SE8705063A SE8705063A SE465084B SE 465084 B SE465084 B SE 465084B SE 8705063 A SE8705063 A SE 8705063A SE 8705063 A SE8705063 A SE 8705063A SE 465084 B SE465084 B SE 465084B
- Authority
- SE
- Sweden
- Prior art keywords
- weight
- aluminum titanate
- aluminum
- content
- fe2o3
- Prior art date
Links
Classifications
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B9/00—Blowing glass; Production of hollow glass articles
- C03B9/30—Details of blowing glass; Use of materials for the moulds
- C03B9/48—Use of materials for the moulds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/14—Closures
- B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
- B22D41/28—Plates therefor
- B22D41/30—Manufacturing or repairing thereof
- B22D41/32—Manufacturing or repairing thereof characterised by the materials used therefor
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/46—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates
- C04B35/462—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates
- C04B35/478—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates based on aluminium titanates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/0085—Materials for constructing engines or their parts
- F02F7/0087—Ceramic materials
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/02—Light metals
- F05C2201/021—Aluminium
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2203/00—Non-metallic inorganic materials
- F05C2203/08—Ceramics; Oxides
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2203/00—Non-metallic inorganic materials
- F05C2203/08—Ceramics; Oxides
- F05C2203/0865—Oxide ceramics
- F05C2203/0869—Aluminium oxide
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2251/00—Material properties
- F05C2251/04—Thermal properties
- F05C2251/042—Expansivity
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Thermal Insulation (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Description
2 1 465 084 ;e ¿ teknik enligt patentkravet 1 stabiliserats sa att sönderfalls- benägenheten nedbringats till ett minimum vid appliceringar inom det sa kallade mellantemperaturintervallet, d v s vid temperaturer mellan 1100°C och 1300°C, utan att andra egen- skaper pàverkas ofördelaktigt, såsom elasticitetsmodulen eller gränstemperaturen för användningen. Föreliggande aluminium- titanatkeramik avses likaså uppvisa en lag värmeutvidgnings- koefficient mellan rumstemperatur och 1000°C av maximalt 2,5 x 1a'6 K'1. 2 1 465 084; e ¿ technology according to claim 1 has been stabilized so that the tendency has been reduced to a minimum in applications within the so-called intermediate temperature range, i.e. at temperatures between 1100 ° C and 1300 ° C, without other properties adversely affected, such as the modulus of elasticity or the limit temperature for use. The present aluminum titanate ceramics are also intended to exhibit a law of thermal expansion coefficient between room temperature and 1000 ° C of a maximum of 2.5 x 1a'6 K'1.
Man har i sammanhanget överraskande funnit att man genom va.. iakttagandet av entydigt fastställda, förhållandevis snäva gränser beträffande i aluminiumtitanatkeramik införlivade tillsatser d v s beträffande MgO, SiO2, Fe2O3 och La2O3, kan erhålla en produkt, som uppvisar utmärkt temperaturstabilitet, speciellt inom mellantemperaturintervallet mellan 1100°C och 1300°C. Detta uppnås dock endast i sådana fall, då speciellt tillsatserna SiO2 och Fe2O3 halles förhållandevis laga, vari- genom även dessutom uppnås att gränstemperaturen för använd- ning kan hàllas vid förhållandevis höga värden.In this context, it has surprisingly been found that one through va .. the observation of unambiguously established, relatively narrow limits regarding in aluminum titanate ceramics incorporated additives i.e. for MgO, SiO2, Fe2O3 and La2O3, can obtain a product which exhibits excellent temperature stability, especially in the intermediate temperature range between 1100 ° C and 1300 ° C. However, this is achieved only in such cases, then especially the additives SiO2 and Fe2O3 are kept relatively low, by also achieving that the limit temperature for use can be maintained at relatively high values.
För att komma till rätta med angivna problemställningar utgår man fràn en aluminiumtitanatkeramik, vilken utmärkas därigenom att den uppvisar följande kemiska sammansättning: A12O3 40 till 60 viktprocent TiO2 35 till 45 viktprocent MgO 0,5 till 1,0 viktprocent ”i Si02 2,5 till 3,0 viktprocent Fe2O3 0,1 till 1,0 viktprocent La2O3 0,1 till 2,5 viktprocent varvid summan av HgO + Fe203 maximalt uppgår till 1,5 vikt- procent, räknat pà totalsammansättningen.To resolve specified issues it is based on an aluminum titanate ceramic, which is distinguished in that it has the following chemical composition: A12O3 40 to 60% by weight TiO2 35 to 45% by weight MgO 0.5 to 1.0% by weight ”in SiO 2 2.5 to 3.0% by weight Fe 2 O 3 0.1 to 1.0% by weight La2O3 0.1 to 2.5% by weight wherein the sum of HgO + Fe 2 O 3 amounts to a maximum of 1.5 wt. percent, calculated on the total composition.
Pa basis av en speciellt föredragen sammansättning utgör halten La2O3 i aluminiumtitanatkeramiken 0,5 till 2,0 vikt- procent. Därvid uppnås en speciellt god temperaturchocbestän- dighet, d v s stabilisering inom temperaturintervallet mellan 1100°C och 1300°C.On the basis of a particularly preferred composition constitutes The content of La2O3 in the aluminum titanium ceramic is 0.5 to 2.0% by weight. percent. In this case, a particularly good temperature shock resistance is achieved. stability, ie stabilization within the temperature range between 1100 ° C and 1300 ° C.
Enligt en ytterligare föredragen sammansättning mot- svarar halten Fe2O3 i aluminiumtitanatkeramiken 0,5 till 1,0 465 084 3 viktprocent, vilket likaså ställer sig gynnsamt med avseende på temperaturchockbeständigheten.According to a further preferred composition, the content of Fe2O3 in the aluminum titanate ceramic corresponds to 0.5 to 1.0 465 084 3 weight percent, which is also favorable with respect to on the temperature shock resistance.
Enligt ytterligare en föredragen sammansättning är hal- ten La2O3 0,5 till 1,5 viktprocent och halten Fe2O3 0,5 till 1,0 viktprocent.According to a further preferred composition, the La2O3 0.5 to 1.5% by weight and the Fe2O3 content 0.5 to 1.0% by weight.
Enligt teknikens ståndpunkt vid tillsatser av antingen MgO, Fe2O3 och/eller SiO2 med avseende pà aluminiumtitanat- keramikmaterialet, för att uppnå stabilisering inom mellan: temperaturintervallet. Vid de flesta tillämpningar med avseen- de pà formdelar av aluminiumtitanatkeramik, genomlöpes ett tempareturintervall cykler mellan rumstemperatur och 1300°C och därigenom även mellanttemperaturintervallet mellan 1100°C och 1300°C, eller också ifràgakommer t o m enbart temperaturer under 1100°C. Aluminiumtitanatkeramiken uppvisar dock maximalt sönderfallsbenägenhet vid cirka 1100°C. Vid denna sönderdel- ning sonderfaller aluminiumtitanatet i de enkla oxiderna AIZO3 och frioz, varigenom áiuminiumtitanatet, d v s ß-Aizrios, en- dast förefinnes kvar i ringa restmängder efter 100 timmars temperaturbehandling vid 1l00°C.According to the state of the art in the addition of either MgO, Fe2O3 and / or SiO2 with respect to aluminum titanate the ceramic material, in order to achieve stabilization within between: the temperature range. In most applications with regard to those on molded parts of aluminum titanate ceramics, one temperature range cycles between room temperature and 1300 ° C and thereby also the intermediate temperature range between 1100 ° C and 1300 ° C, or even only temperatures below 1100 ° C. However, aluminum titanium ceramics show maximum decomposition prone at about 1100 ° C. In this decomposition The aluminum titanate in the simple oxides AIZO3 falls apart and frioz, whereby the aluminum titanate, i.e. ß-Aizrios, en- only remains in small residues after 100 hours temperature treatment at 100 ° C.
Aluminiumtitanatkeramik framställes på ett i sig känt sätt, varigenom utgàngsföreningarna eller utgangsoxiderna brä- nnes vid cirka 1400°C under ett flertal timmar, varvid denna bränning vanligen vidtas av de färdigformade formdelarna, och i detta sammanhang oxiderna överföres till aluminiumtitanat.Aluminum titanate ceramics are made in a manner known per se by which the starting compounds or starting oxides are at about 1400 ° C for several hours, this firing is usually carried out by the preformed molded parts, and in this context the oxides are converted to aluminum titanate.
Halten aluminiumtitanat, d v s B-Al2TiO5, kan bestämmas i de brända aluminiumtitanatkeramikdelarna genom röntgendiffrak-/ tionsanalys pa basis av en standard.The content of aluminum titanate, i.e. B-Al2TiO5, can be determined in the fired aluminum titanate ceramic parts by X-ray diffract / analysis on the basis of a standard.
Beträffande aluminiumtitanatkeramiken enligt föreliggan- de uppfinning är det nödvändigt, att MgO, SiO2, Fe2O3 och La2O3 pà samma gång ingår i oxidform, och att summan av MgO + Fe2O3 maximalt uppgår till 1,5 viktprocent.With regard to the aluminum titanium ceramics according to the present the invention it is necessary that MgO, SiO2, Fe2O3 and La2O3 at the same time is included in oxide form, and that the sum of MgO + Fe2O3 maximum amounts to 1.5% by weight.
Vid framställningen av aluminiumtitanatkeramiken enligt uppfinningsföremàlet kan Fe-andelarna och La-andelarna av ut- gàngsblandningen tillsättas i form av oxid, varvid dock dessa komponenter även kan tillföras i form av klorider, hydroxider, nitrater, acetater eller oxalater, och det ställer sig möj- ligt, att tillföra vattenlösliga föreningar i form av lösnin- gar varmed huvudkomoponenterna Al2O3 och TiO2 kan genomdrän- kas. 465 084 Det har visat sig, att beträffande föreliggande alumini- umtitanatkeramik effekten av de stabiliserande komponenterna MgO, Si02, Fe2O3 och La2O3 icke är additiv, utan att en syn- ergistisk effekt uppnås. Detta kan fastställas därigenom att jämförelseprover framställes, vari angivna fyra oxider ingår var för sig i form av tillsatser, och att efter glödgning vid 1100°C under 100 timmar genom röntgendiffrationsanalys (RBA) halten aluminiumtitant bestämmas i den glödgade keramikform- delen. -F Vid framställningen av aluminiumtitanatkeramiken enligt uppfínningsföremålet kan beträffande huvudbeståndsandelen Al203 respektive TiO2 samtliga gängse råmaterial komma till användning, d v s såväl naturliga som syntetiska råmaterial, till exempel Al2O3, mullit, aluminiumhydroxid, MgAL204, TiO2, La2TiO5, Fe2TiO5, varvid vid användning av utgángsràämnen, som innehåller Mg, La eller Fe, dessa givetvis endast behöver tillföras i sådan mängd, att de i patenkrav 1 angivna halterna för motsvarande oxid ingar i den färdiga aluminiumtitanat- keramiken.In the production of aluminum titanate ceramics according to the subject matter of the invention, the Fe proportions and the La proportions of the initial mixture is added in the form of oxide, however, these components can also be added in the form of chlorides, hydroxides, nitrates, acetates or oxalates, and it is possible to add water-soluble compounds in the form of with which the main components Al2O3 and TiO2 can permeate kas. 465 084 It has been found that with respect to the present aluminum umtitanate ceramics the effect of the stabilizing components MgO, SiO 2, Fe 2 O 3 and La 2 O 3 are not additives, but a ergistic effect is achieved. This can be determined by Comparative samples are prepared, including four oxides separately in the form of additives, and that after annealing at 1100 ° C for 100 hours by X-ray diffraction analysis (RBA) the content of aluminum titanium is determined in the annealed ceramic mold parts. -F In the production of aluminum titanate ceramics according to the subject matter of the invention may relate to the major constituent Al 2 O 3 and TiO 2, respectively, all common raw materials are added use, i.e. both natural and synthetic raw materials, for example Al2O3, mullite, aluminum hydroxide, MgAL204, TiO2, La2TiO5, Fe2TiO5, whereby when using starting materials, which contains Mg, La or Fe, these of course only need added in such an amount that the concentrations specified in claim 1 for the corresponding oxidations in the finished aluminum titanium ceramics.
För sådana fall då de rena huvudbeståndsdelarna Al203 respektive TiO2 användes kan man för uppnåendet av den erfod- erliga halten MgO, SiO2, Fe2O3 och La2O3 i utgångsblandningen tillsätta föreningar på basis av Mg, Si, Fe respektive La, exempelvis MgO, Mg(OH)2, MgCO3, Mg-A1-silikater, SiO2, leror, kaoliner, mullit, Fe2O3, Fe(OH)3, järnhaltiga leror, MgFe2O4, La(OH)3, La2TiO5, LaFEO3,La2Ti2O7 eller också La203. ' Det råmaterial, som väljes, kan bearbetas till massor med organiska bindemedel vid tillsats av ringa vattenmängder enligt i sig känt sätt, varur motsvarande formdelar kan er- hållas till exempel genom pressning, isotaktisk pressning, stränggjutning, slickergjutning, formsprutning etc.For such cases when the pure main constituents Al 2 O 3 respectively TiO 2 is used, in order to achieve the required the content of MgO, SiO2, Fe2O3 and La2O3 in the starting mixture add compounds based on Mg, Si, Fe and La, respectively, for example MgO, Mg (OH) 2, MgCO3, Mg-Al silicates, SiO2, clays, kaolins, mullite, Fe2O3, Fe (OH) 3, ferrous clays, MgFe2O4, La (OH) 3, La2TiO5, LaFEO3, La2Ti2O7 or also La203. ' The raw material selected can be processed into masses with organic binders when adding small amounts of water according to a manner known per se, from which corresponding molded parts can be obtained. held, for example, by pressing, isotactic pressing, continuous casting, slick casting, injection molding, etc.
Det ställer sig likaså möjligt att överföra delmängder eller slutblandningen av ràmaterialen före mässans upparbetning i en brännugn till ett förreagerat tillstånd.It is also possible to transfer subsets or the final mixture of the raw materials before the work-up of the fair in a kiln to a pre-reacted state.
-. G1 465 084 ,.-. G1 465 084,.
Uppfinninngen belyses närmare med utgångspunkt fràn ex- empel och jämförelseförsök som följer.The invention is further elucidated on the basis of examples and comparison experiments that follow.
EXEMPEL Al2O3, TiO2, kaolin avsett för införlivandet av Si02, MgAl204, avsett för införlivandet av Mg0, Fe2O3 och La(OH>3 blandades samman i sådana mängder, så att den färdiga bland- ningen pà basis av oxider visade sammasättning som följer: Al2O3 52,3 viktprocent TiO2 41,7 viktprocent SiO2 2,56 viktprocent MgO 0,74 viktprocent Fe2O3 0,74 viktprocent La2O3 1,96 viktgrocent 100,00 viktprocent 100 viktdelar av utgàngsblandningen vàtmaldes med 0,5 viktdelar organiskt bindemedel i form av polyvinylalkohol och 0,25 viktdelar smörjmedel samt 100 viktdelar vatten under 12 timmar i en kulkvarn med Al2O3-kulor. Därpå vidtogs torkning vid 50°C, homgeniserades och formkroppar med diametern 50 mm och höjden 10 mm framställdes i en press vid presstrycket 100 MPa. Dessa formkroppar brändes vid 1370°C under 4 timmar.EXAMPLE Al2O3, TiO2, kaolin intended for the incorporation of SiO2, MgAl 2 O 4, intended for the incorporation of MgO, Fe 2 O 3 and La (OH> 3 were mixed together in such quantities that the finished mixture The composition on the basis of oxides showed the following composition: Al2O3 52.3% by weight TiO2 41.7% by weight SiO2 2.56% by weight MgO 0.74% by weight Fe 2 O 3 0.74% by weight La2O3 1.96% by weight 100.00% by weight 100 parts by weight of the starting mixture were wet milled with 0.5 parts by weight of organic binder in the form of polyvinyl alcohol and 0.25 parts by weight of lubricant and 100 parts by weight of water under 12 hours in a ball mill with Al2O3 bullets. Then drying was done at 50 ° C, homgenized and shaped bodies with a diameter of 50 mm and the height of 10 mm was produced in a press at the press pressure 100 MPa. These shaped bodies were fired at 1370 ° C for 4 hours.
Jämförelseförsök Arbetsmetodiken i exemplen upprepades, varvid i detta samman- hang dock icke någon tillsats av La(OH)3 och Fe2O3 vidtogs, d v s den brända aluminiumtitanatkeramiken innehöll därvid varken La2O3 eller Fe2O3, förutom de oundvikliga föroreningar- na på basis av Fe203.Comparison attempts The working methodology in the examples was repeated, in this however, no addition of La (OH) 3 and Fe 2 O 3 was taken, i.e. the fired aluminum titanate ceramic contained thereby neither La2O3 nor Fe2O3, apart from the unavoidable pollutants na on the basis of Fe 2 O 3.
Utgangsblandningen uppvisade sammasättning som följer: Al203 54,2 viktprocent Ti02 42,4 viktprocent S102 2,60 viktprocent Mg0 0,75 viktprocent Fe2O3 < 0,03 viktprocent (förorening) 465 084 De i enligt exemplet och jämförelseförsöket framställda form- kropparna glödgades under 100 timmar vid 1100°C. Därpå be- stämdes halten B-Al2TiO5 i formkropparna.The starting mixture showed the following composition: Al 2 O 3 54.2% by weight TiO 2 42.4% by weight S102 2.60% by weight Mg0 0.75% by weight Fe 2 O 3 <0.03% by weight (impurity) 465 084 The forms prepared according to the example and the comparative experiment the bodies were annealed for 100 hours at 1100 ° C. Then be- the content of B-Al2TiO5 in the shaped bodies was adjusted.
Erhàllna resultat finns sammanställda i tabellen som följer. Därav framgår, att föreliggande aluminiumtitanatkera- mik uppvisar väsentligt förbättrad stabilisering av alumi- niumtitanatkomponenter.The results obtained are summarized in the table as follows. It follows that the present aluminum titanium ceramic mik shows significantly improved stabilization of aluminum nium titanate components.
TABELL Exempel Jämförelseförsök (efter temperaturbehandling 1100°C/100 h) B-Al2Ti05 (%) 61 0 3bRt (MPa) 35 38 E-Modul stat. CHART Example Comparison experiments (after temperature treatment 1100 ° C / 100 h) B-Al2Ti05 (%) 61 0 3bRt (MPa) 35 38 E-Module stat.
Gränstemperatur-C-C) 1700 1700 vid användning (RT+-1000-C) (Z) 0,18 0,25 Hysteresyta ** 6 10 +RT = Rumstemperatur ** Hysteresytan bestämdes genom upphettning och nedkylning mellan 30°C och 1000°C jämte uppmätning av volymänd- ringen.Limit temperature-C-C) 1700 1700 when used (RT + -1000-C) (Z) 0.18 0.25 Hysteresis ** 6 10 + RT = Room temperature ** The hysteresis surface was determined by heating and cooling between 30 ° C and 1000 ° C as well as measuring the volume change the ring.
Ju mindre ytor man erhåller på basis av termisk hyste- resis, desto högre blir formkropparnas temperaturväxlingsbe- ständighet och därigenom blir den mekaniska försämringen vid temperaturändringar desto mindre, speciellt vid cykliska tem- peraturväxlingar.The smaller the surface area obtained on the basis of thermal resis, the higher the temperature change ratio of the mold bodies permanence and thereby the mechanical deterioration persists temperature changes nonetheless, especially at cyclical temperature changes.
Beträffande aluminiumtitanatkropparna enligt uppfinning- en uppvisar dessa i allmänhet hysteresytor 3 8, företrädesvis 5 5.Regarding the aluminum titanate bodies according to the invention one generally has these hysteresis surfaces 38, preferably 5 5.
Föreliggande aluminiumtitanatkeramik är väl lämpad för applikationer/användningar som formdelar för kolvbottnar eller utloppsventiler i förbränningsmotorer samt likaså som stigrör. 465 084 Speciellt hos ifrågavarande motorkolvar inträffar stora tempe- raturförändringar, varvid föreliggande aluminiumtitanatkeramik är applicerbar/användbar i samband med värmeisolerade diesel- motorkolvar, vilka framställes i form av uppbyggnad baserad pà metall/keramikkombinationer.The present aluminum titanate ceramic is well suited for applications / uses as mold parts for piston bottoms or outlet valves in internal combustion engines as well as risers. 465 084 Especially with the engine pistons in question, high temperatures occur. changes, whereby the present aluminum titanate ceramic is applicable / usable in connection with heat-insulated diesel engine pistons, which are manufactured in the form of a structure based on metal / ceramic combinations.
Ytterligare en fördelaktig applikation/användning för aluminiumtitanatkeramiken enligt uppfinningsföremàlet inbegri- per likasà förskjutbara förslutningar och förslutningar med gänga avsedda för kärl med smälter, speciellt med icke järnme~ taller, och dysor jämte rännor för metallurgiska ändamål inne- fattas även. Formdelar av föreliggande aluminiumtitanatkeramik kan likaså ställa sig applicerbara/användbara som glasform- verktyg och glasomformningsverktyg, till exempel med avseende pà handformverktyg, blàsformverktyg, pressformverktyg och för- formverktyg, varvid förekommande verktyg pà basis av metall och trä antingen helt och_hà11et kan ersättas med delar av aluminiumtitanatkeramik eller också betydligt kan förbättras genom kombination med formdelar av aluminiumtitanatkeramik.Another advantageous application / use for the aluminum titanate ceramic according to the object of the invention includes per equally displaceable closures and closures with thread intended for vessels with melts, especially with non-iron ~ pallets, and nozzles as well as gutters for metallurgical purposes also taken. Molded parts of the present aluminum titanate ceramic may also be applicable / useful as glass molds. tools and glass transformation tools, for example with respect to on hand-shaped tools, blow-molding tools, press-forming tools and molding tools, using existing tools based on metal and wood either completely and_hà11et can be replaced with parts of aluminum titanium ceramics or can be significantly improved by combination with molded parts of aluminum titanate ceramic.
En ytterligare fördelaktig applikation/användning för aluminiumtitanatkeramiken enligt uppfinningen utgör applika- tion/användning som termiska isolerskikt, varvid bränd alumi- niumtitanatkeramik i krossad form kan anbringas genom sprut- ning, neddoppning, plasmasprutning, flamsprutning etc pà en yta. .oAn additional advantageous application / use for the aluminum titanate ceramic according to the invention constitutes the / use as thermal insulation layers, whereby burnt aluminum crushed titanium titanium ceramics can be applied by spraying. ning, immersion, plasma spraying, flame spraying etc on one surface. .O
Claims (4)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19863644664 DE3644664A1 (en) | 1986-12-30 | 1986-12-30 | Aluminium titanate ceramic and use thereof |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| SE8705063D0 SE8705063D0 (en) | 1987-12-18 |
| SE8705063L SE8705063L (en) | 1988-07-01 |
| SE465084B true SE465084B (en) | 1991-07-22 |
Family
ID=6317340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE8705063A SE465084B (en) | 1986-12-30 | 1987-12-18 | ALUMINIUMTITANATKERAMIK |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2520275B2 (en) |
| DE (1) | DE3644664A1 (en) |
| FR (1) | FR2609021B1 (en) |
| SE (1) | SE465084B (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2600787B2 (en) * | 1988-04-11 | 1997-04-16 | 松下電器産業株式会社 | Magnetic recording media |
| US5288672A (en) * | 1988-04-26 | 1994-02-22 | Bayer Aktiensesellschaft | Ceramics based on aluminum titanate, process for their production and their use |
| DE3827646A1 (en) * | 1988-08-16 | 1990-02-22 | Bayer Ag | SINTERABLE RAW MATERIAL POWDER BASED ON ALUMINUM TITANATE, METHOD FOR THE PRODUCTION THEREOF AND THE SINTER MOLDED BODIES MADE THEREOF AND THEIR USE THEREOF |
| DE68922193T4 (en) * | 1988-12-02 | 1997-02-06 | Ngk Insulators Ltd | Ceramic materials for composite casting and processes for their production. |
| DE4029166C3 (en) * | 1990-06-22 | 1998-12-24 | Bayer Ag | Sintered moldings based on aluminum titanate, process for their production and their use |
| JPH04305054A (en) * | 1991-03-29 | 1992-10-28 | Ngk Insulators Ltd | Aluminum titanate structure and production thereof |
| EP0530508A3 (en) * | 1991-08-02 | 1993-06-30 | Fischer Olaf | Method for making a mould and mould for the production of glass articles |
| DE4131215C2 (en) * | 1991-08-02 | 1996-02-08 | Olaf Fischer | Use of pourable silicon-infiltrated silicon carbide for the production of a mold for the production of glass articles |
| JP2533992B2 (en) * | 1991-08-28 | 1996-09-11 | 日本碍子株式会社 | Aluminum titanate ceramics and manufacturing method thereof |
| DE19508321A1 (en) * | 1995-03-09 | 1996-09-12 | Klein Schanzlin & Becker Ag | Centrifugal pump unit with integrated heat barrier |
| DE10025132A1 (en) * | 2000-05-20 | 2001-11-22 | Volkswagen Ag | Piston esp. for IC engines with direct fuel injection is manufactured from titanium aluminum alloy |
| US7259120B2 (en) * | 2004-04-21 | 2007-08-21 | Corning Incorporated | Aluminum titanate ceramic articles and methods of making same |
| EP2085498A1 (en) | 2008-02-04 | 2009-08-05 | Siemens Aktiengesellschaft | Ceramic heat insulation layers with increased resistance to corrosion due to impure fuels |
| FR2947260A1 (en) * | 2009-06-26 | 2010-12-31 | Saint Gobain Ct Recherches Etudes | OXIDE-FILLED GRAINS COMPRISING AL, IT, SI AND CERAMIC PRODUCTS COMPRISING SUCH GRAINS |
| FR2948657B1 (en) * | 2009-07-28 | 2013-01-04 | Saint Gobain Ct Recherches | OXIDE-FILLED GRAINS COMPRISING AL, IT AND CERAMIC PRODUCTS COMPRISING SUCH GRAINS |
| WO2011036397A1 (en) * | 2009-09-22 | 2011-03-31 | Saint-Gobain Centre De Recherches Et D'etudes Europeen | Alumina titanate porous structure |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1238376B (en) * | 1964-01-29 | 1967-04-06 | Rosenthal Ag | Ceramic materials resistant to temperature changes |
| JPS5334812A (en) * | 1976-09-14 | 1978-03-31 | Asahi Glass Co Ltd | Aluminummtitanate bodies stable at high temperature |
| US4483944A (en) * | 1983-07-27 | 1984-11-20 | Corning Glass Works | Aluminum titanate-mullite ceramic articles |
| DE3534149C1 (en) * | 1985-09-25 | 1987-01-29 | Feldmuehle Ag | Axial face seal (sliding ring seal) |
-
1986
- 1986-12-30 DE DE19863644664 patent/DE3644664A1/en active Granted
-
1987
- 1987-12-18 SE SE8705063A patent/SE465084B/en not_active IP Right Cessation
- 1987-12-23 JP JP62324233A patent/JP2520275B2/en not_active Expired - Lifetime
- 1987-12-29 FR FR8718311A patent/FR2609021B1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE3644664C2 (en) | 1992-11-19 |
| SE8705063D0 (en) | 1987-12-18 |
| JPS63170260A (en) | 1988-07-14 |
| FR2609021B1 (en) | 1993-07-30 |
| FR2609021A1 (en) | 1988-07-01 |
| JP2520275B2 (en) | 1996-07-31 |
| SE8705063L (en) | 1988-07-01 |
| DE3644664A1 (en) | 1988-07-14 |
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