DE102021110570A1 - MANUFACTURING PROCESS FOR A SINTERED TRANSITION METAL HIGH-TROPIC CERAMIC OXIDE COMPOSITE - Google Patents
MANUFACTURING PROCESS FOR A SINTERED TRANSITION METAL HIGH-TROPIC CERAMIC OXIDE COMPOSITE Download PDFInfo
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- 239000000919 ceramic Substances 0.000 title claims abstract description 55
- 239000002131 composite material Substances 0.000 title claims abstract description 52
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 229910052723 transition metal Inorganic materials 0.000 title claims description 19
- 150000003624 transition metals Chemical class 0.000 title claims description 19
- 239000011812 mixed powder Substances 0.000 claims abstract description 18
- 238000005245 sintering Methods 0.000 claims abstract description 17
- 239000002994 raw material Substances 0.000 claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 8
- 230000007704 transition Effects 0.000 claims abstract description 7
- 238000000498 ball milling Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 6
- 238000009768 microwave sintering Methods 0.000 claims description 5
- 239000006104 solid solution Substances 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 4
- 229910000905 alloy phase Inorganic materials 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 12
- 238000003786 synthesis reaction Methods 0.000 abstract description 11
- 238000005303 weighing Methods 0.000 abstract 1
- 238000002441 X-ray diffraction Methods 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 9
- 239000000126 substance Substances 0.000 description 5
- 238000002955 isolation Methods 0.000 description 4
- 238000001878 scanning electron micrograph Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical group [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000005467 ceramic manufacturing process Methods 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000678 plasma activation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000001272 pressureless sintering Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
Die vorliegende Erfindung offenbart ein Herstellungsverfahren für einen gesinterten Übergangsmetall-Hochentropie-Keramikoxid-Verbundwerkstoff, das sich auf das technische Gebiet der Hochentropie-Keramikmaterialien bezieht. Es umfasst die folgenden Schritte: S1, Abwiegen von MgO-, CoO-, NiO-, CuO- bzw. ZnO-Pulver-Rohstoffen und deren gleichmäßiges Mischen, um ein gemischtes Pulver zu erhalten; S2, Sintern des aus S1 erhaltenen gemischten Pulvers bei 900~1300°C für 0,5-1,5 h nach dem Vorpressen und der Knüppelherstellung, wobei das Sintern durch Mikrowellen durchgeführt wird. Dadurch wird der (MgCoNiCuZn)O-Hochentropie-Keramikoxid-Verbundwerkstoff erhalten. Das durch die Erfindung bereitgestellte Herstellungsverfahren stellt den (MgCoNiCuZn)O-Hochentropie-Keramikoxid-Verbundwerkstoff her, was die Synthesekosten von (MgCoNiCuZn)O-Hochentropie-Keramikoxid effektiv reduziert und die Syntheseeffizienz verbessert.The present invention discloses a production method for a sintered transition metal-high entropy ceramic oxide composite, which relates to the technical field of high entropy ceramics. It includes the following steps: S1, weighing MgO, CoO, NiO, CuO, ZnO powder raw materials, respectively, and mixing them uniformly to obtain a mixed powder; S2, sintering the mixed powder obtained from S1 at 900˜1300°C for 0.5˜1.5 hours after the prepressing and the billet making, wherein the sintering is performed by microwave. Thereby the (MgCoNiCuZn)O high entropy ceramic oxide composite is obtained. The production method provided by the invention produces the (MgCoNiCuZn)O high entropy ceramic oxide composite, which effectively reduces the synthesis cost of (MgCoNiCuZn)O high entropy ceramic oxide and improves the synthesis efficiency.
Description
Technisches Gebiettechnical field
Die vorliegende Erfindung bezieht sich auf das technische Gebiet der Hochentropie-Keramikmaterialien und insbesondere auf ein Herstellungsverfahren für einen gesinterten Übergangsmetall-Hochentropie-Keramikoxid-Verbundwerkstoff.The present invention relates to the technical field of high entropy ceramic materials, and more particularly to a manufacturing method for a sintered transition metal-high entropy ceramic oxide composite.
Stand der TechnikState of the art
„Entropie” leitet sich aus dem Begriff der Thermodynamik ab und ist eine der parametrischen Größen in der Thermodynamik, wobei ihre physikalische Bedeutung als Grad der Unordnung in einem materiellen System ausgedrückt wird. Die Definition von „Hochentropie“ stammt ursprünglich von Hochentropie-Legierungen, d.h. die Stabilisierung von Materialien durch eine hohe Konfiguration der Entropie im System. In den letzten Jahren hat die Leistungsfähigkeit von Hochentropie-Legierungen in einigen Bereichen die Anforderungen der Luft- und Raumfahrt und des Militärs nicht mehr erfüllt, so dass hochentropische Keramiken entstanden sind."Entropy" is derived from the term thermodynamics and is one of the parametric quantities in thermodynamics, its physical meaning being expressed as the degree of disorder in a material system. The definition of "high entropy" originally comes from high entropy alloys, i.e. the stabilization of materials by a high configuration of entropy in the system. In recent years, the performance of high entropy alloys has fallen short of the aerospace and military requirements in some areas, leading to the emergence of high entropy ceramics.
Für die Herstellung von hochentropischen Keramiken gibt es derzeit viele traditionelle Herstellungsverfahren, wie z.B. die Verwendung des Plasmaaktivierungssinterns oder die Verwendung des Muffelofensinterns usw. Diese Sinterverfahren haben mehrere Probleme: schwierige Verfahren, komplexe Prozeduren, hohe Temperaturanforderungen, hohe Kosten, hohe Verschmutzung, langer Herstellungszyklus und nicht einfach, eine einphasige feste Lösung zu synthetisieren.For the production of high entropic ceramics, there are currently many traditional manufacturing methods, such as using plasma activation sintering or using muffle furnace sintering, etc. These sintering methods have several problems: difficult procedures, complex procedures, high temperature requirements, high cost, high pollution, long manufacturing cycle and not easy to synthesize a single phase solid solution.
Inhalt der Erfindungcontent of the invention
Der Zweck der vorliegenden Erfindung besteht darin, die oben erwähnten Mängel in der Hintergrundtechnologie zu beheben und ein Herstellungsverfahren für einen gesinterten Übergangsmetall-Hochentropie-Keramikoxid-Verbundwerkstoff bereitzustellen, was die Synthesekosten von (MgCoNiCuZn)O-Hochentropie-Keramikoxid effektiv reduziert und die Syntheseeffizienz verbessert.The purpose of the present invention is to solve the above-mentioned deficiencies in the background technology and to provide a manufacturing method for a sintered transition metal high entropy ceramic oxide composite material, which effectively reduces the synthesis cost of (MgCoNiCuZn)O high entropy ceramic oxide and improves the synthesis efficiency .
Die erste Aufgabe der vorliegenden Erfindung besteht darin, ein Herstellungsverfahren für einen gesinterten Übergangsmetall-Hochentropie-Keramikoxid-Verbundwerkstoff bereitzustellen, das die folgenden Schritte umfasst:
- MgO-, CoO-, NiO-, CuO- und ZnO-Pulver-Rohstoffe werden abgewogen und gleichmäßig gemischt, um ein gemischtes Pulver zu erhalten; anschließend wird das gemischte Pulver nach dem Vorpressen und der Knüppelherstellung bei 900-1300°C für 0,5-1,5 h gesintert, um einen (MgCoNiCuZn)O-Hochentropie-Keramikoxid-Verbundwerkstoff zu erhalten;
- MgO, CoO, NiO, CuO and ZnO powder raw materials are weighed and evenly mixed to obtain mixed powder; then the mixed powder after the pre-pressing and billet production is sintered at 900-1300°C for 0.5-1.5 hours to obtain a (MgCoNiCuZn)O high entropy ceramic oxide composite;
Das Sintern wird durch Mikrowellen durchgeführt.The sintering is performed by microwaves.
Bevorzugt wird der Mikrowellensinterprozess durch Auswahl einer Mikrowellenwellenlänge von 1 mm bis 1 m, einer Frequenz von 915 MHz und/oder 2450 MHz und einer Leistungseingangsrate von 20 bis 40 W/min durchgeführt.Preferably, the microwave sintering process is performed by selecting a microwave wavelength of 1 mm to 1 m, a frequency of 915 MHz and/or 2450 MHz, and a power input rate of 20 to 40 W/min.
Bevorzugter wird das Sintern mit einer Temperaturanstiegsrate von 10 bis 30°C/min durchgeführt.More preferably, the sintering is performed at a temperature rise rate of 10 to 30°C/min.
Bevorzugt werden die Rohmaterialien durch Nasskugelmahlen gemischt; wobei das Kugelmahlen ein Kugel-zu-Material-Verhältnis von 3 bis 6:1 und eine Rotationsgeschwindigkeit von 250 bis 310 U/min aufweist.Preferably, the raw materials are mixed by wet ball milling; wherein the ball milling has a ball to material ratio of 3 to 6:1 and a rotation speed of 250 to 310 rpm.
Bevorzugter haben die MgO-, CoO-, NiO-, CuO- und ZnO-Pulver-Rohstoffe alle einen Durchmesser von 1 bis 3 µm; und die durchschnittliche Teilchengröße des gemischten Pulvers beträgt nach dem Kugelmahlen 0,1 bis 1 µm.More preferably, the MgO, CoO, NiO, CuO, and ZnO powder raw materials all have a diameter of 1 to 3 µm; and the average particle size of the mixed powder after ball milling is 0.1 to 1 µm.
Bevorzugter beträgt das Molverhältnis der MgO-, CoO-, NiO-, CuO- und ZnO-Pulver 1:1:1:1:1.More preferably, the molar ratio of the MgO, CoO, NiO, CuO and ZnO powders is 1:1:1:1:1.
Bevorzugt erfolgt das Vorpressen und die Knüppelherstellung mit dem gemischten Pulver durch Einbringen des gemischten Pulvers in eine Form und Vorpressen desselben für 1 bis 2,5 min unter einem Druck von 7 bis 12 MPa; wobei die Dicke des Knüppels 3 bis 6 mm beträgt. Die zweite Aufgabe der vorliegenden Erfindung ist es, einen gesinterten Übergangsmetall-Hochentropie-Keramikoxid-Verbundwerkstoff bereitzustellen.Preferably, the pre-pressing and billet production with the mixed powder is carried out by introducing the mixed powder into a mold and pre-pressing it for 1 to 2.5 minutes under a pressure of 7 to 12 MPa; where the thickness of the billet is 3 to 6 mm. The second object of the present invention is to provide a transition metal-high entropy ceramic oxide sintered composite.
Bevorzugt ist die Legierungsphase in dem Verbundwerkstoff eine einphasige feste Lösung. Im Vergleich zum Stand der Technik hat die vorliegende Erfindung die folgenden vorteilhaften Wirkungen:
- Das durch die Erfindung bereitgestellte Herstellungsverfahren stellt den (MgCoNiCuZn)O-Hochentropie-Keramikoxid-Verbundwerkstoff her, was die Synthesekosten von (MgCoNiCuZn)O-Hochentropie-Keramikoxid effektiv reduziert und die Syntheseeffizienz verbessert.
- The production method provided by the invention produces the (MgCoNiCuZn)O high entropy ceramic oxide composite, which effectively reduces the synthesis cost of (MgCoNiCuZn)O high entropy ceramic oxide and improves the synthesis efficiency.
Die Legierungsphase in dem durch die vorliegende Erfindung bereitgestellten (MgCoNiCuZn)O-Hochentropie-Keramikverbundwerkstoff ist eine einphasige feste Lösung.The alloy phase in the (MgCoNiCuZn)O high entropy ceramic composite provided by the present invention is a single phase solid solution.
Figurenlistecharacter list
-
1 ist ein XRD-Muster eines mikrowellengesinterten Übergangsmetall-(MgCoNiCuZn)O-Hochentropie-Keramikoxid-Verbundwerkstoffs, der in Ausführungsform 1 der vorliegenden Erfindung erhalten wird.1 14 is an XRD pattern of a microwave-sintered transition metal (MgCoNiCuZn)O high entropy ceramic oxide composite obtained inEmbodiment 1 of the present invention. -
2 ist ein XRD-Muster eines mikrowellengesinterten Übergangsmetall-(MgCoNiCuZn)O-Hochentropie-Keramikoxid-Verbundwerkstoffs, der in Ausführungsform 2 der vorliegenden Erfindung erhalten wird.2 14 is an XRD pattern of a microwave-sintered transition metal (MgCoNiCuZn)O high entropy ceramic oxide composite obtained inEmbodiment 2 of the present invention. -
3 ist ein XRD-Muster eines mikrowellengesinterten Übergangsmetall-(MgCoNiCuZn)O-Hochentropie-Keramikoxid-Verbundwerkstoffs, der in Ausführungsform 3 der vorliegenden Erfindung erhalten wird.3 14 is an XRD pattern of a microwave-sintered transition metal (MgCoNiCuZn)O high entropy ceramic oxide composite obtained inEmbodiment 3 of the present invention. -
4 ist ein REM-Bild eines mikrowellengesinterten Übergangsmetall-(MgCoNiCuZn)O-Hochentropie-Keramikoxid-Verbundwerkstoffs, der in Ausführungsform 1 der vorliegenden Erfindung erhalten wird.4 14 is an SEM image of a microwave-sintered transition metal (MgCoNiCuZn)O high entropy ceramic oxide composite obtained inEmbodiment 1 of the present invention. -
5 ist ein XRD-Muster eines mikrowellengesinterten Übergangsmetall-(MgCoNiCuZn)O-Hochentropie-Keramikoxid-Verbundwerkstoffs, der in Vergleichsform 1 erhalten wird.5 FIG. 14 is an XRD pattern of a microwave-sintered transition metal (MgCoNiCuZn)O high entropy ceramic oxide composite obtained inComparative Form 1. FIG. -
6 ist ein REM-Bild eines mikrowellengesinterten Übergangsmetall-(MgCoNiCuZn)O-Hochentropie-Keramikoxid-Verbundwerkstoffs, der in Vergleichsform 1 erhalten wird.6 14 is an SEM image of a microwave-sintered transition metal (MgCoNiCuZn)O high entropy ceramic oxide composite obtained inComparative Form 1. FIG.
Ausführliche Beschreibung der bevorzugten AusführungsformenDetailed Description of Preferred Embodiments
Um dem Fachmann ein besseres Verständnis der technischen Lösung der vorliegenden Erfindung zu ermöglichen, wird die vorliegende Erfindung im Folgenden in Verbindung mit bestimmten Ausführungsformen und den anhängenden Zeichnungen weiter beschrieben, wobei die genannten Ausführungsformen nicht als Einschränkung der vorliegenden Erfindung dienen.In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in the following in connection with specific embodiments and the attached drawings, whereby the mentioned embodiments do not serve as a limitation of the present invention.
Es ist zu beachten, dass die in den folgenden Ausführungsformen beschriebenen experimentellen Methoden konventionell sind, wenn nicht anders angegeben, und dass die verwendeten Reagenzien und Materialien kommerziell erhältlich sind, wenn nicht anders angegeben.It should be noted that the experimental methods described in the following embodiments are conventional unless otherwise noted and that the reagents and materials used are commercially available unless otherwise noted.
Ausführungsform 1
Herstellungsverfahren für einen gesinterten Übergangsmetall-Hochentropie-Keramikoxid-Verbundwerkstoff, umfassend die folgenden Schritte:
- Die Rohstoffe MgO-, CoO-, NiO-, CuO- und ZnO-Pulver werden entsprechend dem molaren Verhältnis von 1:1:1:1:1 gewogen, und die Rohstoffe werden durch Nasskugelmahlen mit einem Kugel-zu-Material-Verhältnis von 5:1 und einer Geschwindigkeit von 300 U/min gemischt, um das gemischte Pulver zu erhalten; wobei die durchschnittlichen Durchmesser der MgO-, CoO-, NiO-, CuO- und ZnO-Partikel im gemischten Pulver 1-3 µm betragen; die durchschnittliche Partikelgröße des gemischten Pulvers nach dem Kugelmahlen beträgt 0,1-1 µm;
- 30 g gemischtes Pulver wird abgewogen; der Blockrohling wird in der Mühle bei Raumtemperatur gepresst, der Druck beträgt 10 MPa; der Druck wird für 1,5 min gehalten und dann entlastet; die Dicke des Rohlings beträgt 5 mm; der Block wird mittels Mikrowelle gesintert; eine zusätzliche Isolationsstruktur wird eingesetzt; die Sintertemperatur beträgt 1300°C, die Isolation dauert 30 min; der Wellenlängenbereich der Mikrowelle beträgt 0,5 m, die Frequenz beträgt 915 MHz, die Eingangsleistung wird auf 30 w/min eingestellt mit einer Temperaturanstiegsrate von 20 °C /min; so wird ein (MgCoNiCuZn)O-Hochentropie-Keramikoxid-Verbundwerkstoff erhalten.
- The raw materials MgO, CoO, NiO, CuO and ZnO powder are weighed according to the molar ratio of 1:1:1:1:1, and the raw materials are processed by wet ball milling with a ball-to-material ratio of mixed 5:1 and a speed of 300 rpm to obtain the mixed powder; wherein the average diameters of MgO, CoO, NiO, CuO and ZnO particles in the mixed powder are 1-3 µm; the average particle size of the mixed powder after ball milling is 0.1-1 µm;
- 30g of mixed powder is weighed; the billet is pressed in the mill at room temperature, the pressure is 10 MPa; the pressure is held for 1.5 min and then released; the thickness of the blank is 5 mm; the block is sintered by microwave; an additional isolation structure is employed; the sintering temperature is 1300°C, the insulation lasts 30 minutes; the microwave wavelength range is 0.5 m, the frequency is 915 MHz, the input power is set at 30 w/min with a temperature rise rate of 20 °C/min; thus a (MgCoNiCuZn)O high entropy ceramic oxide composite is obtained.
Ausführungsform 2
Wie Ausführungsform 1, aber der Unterschied ist: 20 g gemischtes Pulver wird abgewogen; der Blockrohling wird in der Mühle bei Raumtemperatur gepresst, der Druck beträgt 7 MPa; der Druck wird für 1 min gehalten und dann entlastet; die Dicke des Rohlings beträgt 6 mm; der Block wird mittels Mikrowelle gesintert; eine zusätzliche Isolationsstruktur wird eingesetzt; die Sintertemperatur beträgt 900 °C, die Isolation dauert 40 min;
der Wellenlängenbereich der Mikrowelle beträgt 1 m, die Frequenz beträgt 2450 MHz, die Eingangsleistung wird auf 40 w/min eingestellt mit einer Temperaturanstiegsrate von 30°C /min.Same as
the wavelength range of the microwave is 1 m, the frequency is 2450 MHz, the input power is set at 40 w/min with a temperature rise rate of 30°C/min.
Ausführungsform 3
Wie Ausführungsform 1, aber der Unterschied ist: 10 g gemischtes Pulver wird abgewogen; der Blockrohling wird in der Mühle bei Raumtemperatur gepresst, der Druck beträgt 12 MPa; der Druck wird für 2,5 min gehalten und dann entlastet; die Dicke des Rohlings beträgt 3 mm; der Block wird mittels Mikrowelle gesintert; eine zusätzliche Isolationsstruktur wird eingesetzt; die Sintertemperatur beträgt 1000°C, die Isolation dauert 20 min;
der Wellenlängenbereich der Mikrowelle beträgt 1 mm, die Frequenz beträgt 915 MHz und 2450 MHz, die Eingangsleistung wird auf 20 w/min eingestellt mit einer Temperaturanstiegsrate von 10°C/min.Same as
the wavelength range of the microwave is 1 mm, the frequency is 915 MHz and 2450 MHz, the input power is set at 20 w/min with a temperature rise rate of 10°C/min.
Vergleichsform 1
Wie Ausführungsform 1, aber der Unterschied ist: die verwendete Sintertemperatur beträgt 800 °C.As
Vergleichsform 2
Wie Ausführungsform 2, aber der Unterschied ist: druckloses Sintern wird verwendet, die Sintertemperatur beträgt 1000 °C und die Sinterzeit beträgt 6 h.Same as
Um die relevanten Eigenschaften der Verbundwerkstoffe zu veranschaulichen, die durch das Herstellungsverfahren für einen gesinterten Übergangsmetall-Hochentropie-Keramikoxid-Verbundwerkstoff der vorliegenden Erfindung hergestellt werden, werden die Verbundwerkstoffe aus Ausführungsformen 1 bis 3 getestet. Insbesondere wird die physikalische Phasencharakterisierung der (MgCoNiCuZn)O-Hochentropie-Keramikverbundwerkstoffe der Ausführungsformen 1 - 3 und der Vergleichsform 1 mit einem SmartLab-Röntgenbeugungsanalysator (XRD) der Firma Rigaku Corporation aus Japan durchgeführt, die wiederum zur Analyse der Rohstoffe und der physikalischen Phasenzusammensetzung der endgültigen (MgCoNiCuZn)O-Hochentropie-Keramikverbundwerkstoffe, die unter verschiedenen Variablen hergestellt werden, verwendet wird, wie in den
Die XRD-Testergebnisse des mikrowellengesinterten (MgCoNiCuZn)O-Hochentropie-Keramikverbundwerkstoffs in Ausführungsform 1 sind in
Wie in
Wie in
Zusammenfassend wird durch den Vergleich von Ausführungsform 1 und Vergleichsform 1 gezeigt, dass die Bildung von (MgCoNiCuZn)O-Hochentropie-Keramikoxid-Verbundwerkstoffen mit seiner Temperatur zusammenhängt; durch den Vergleich von Ausführungsform 2 und Vergleichsform 2 wird die Vorteile des Mikrowellensintems von (MgCoNiCuZn)O-Hochentropie-Keramikoxid-Verbundwerkstoffen gezeigt, d.h. die benötigte Zeit ist kürzer und effizienter.In summary, by comparing
Die vorliegende Erfindung widmet sich der Bereitstellung eines neuen keramischen Herstellungsverfahrens unter Verwendung des Mikrowellensinterns von keramischen Verbundwerkstoffen mit hoher Entropie. Der Vorteil der vorliegenden Erfindung ist, dass das Mikrowellensintern den eigenen dielektrischen Verlust der Substanz nutzt, um Mikrowellen für die volumetrische Erwärmung zu absorbieren. Die Synthese ist schnell und die Syntheseeffizienz ist hoch, wodurch die Synthesekosten von (MgCoNiCuZn)O-Hochentropie-Keramikoxid effektiv reduziert und die Syntheseeffizienz verbessert werden.The present invention is directed to providing a new ceramic manufacturing process utilizing microwave sintering of high entropy ceramic composites. The advantage of the present invention is that microwave sintering utilizes the substance's own dielectric loss to produce micro to absorb waves for volumetric heating. The synthesis is fast and the synthesis efficiency is high, effectively reducing the synthesis cost of (MgCoNiCuZn)O high entropy ceramic oxide and improving the synthesis efficiency.
Bevorzugte Ausführungsformen und deren Auswirkungen sind in der vorliegenden Erfindung beschrieben. Zusätzliche Änderungen und Modifikationen an diesen Ausführungsformen können jedoch von Fachleuten vorgenommen werden, sobald die grundlegenden erfinderischen Konzepte bekannt sind. Daher sollen die beigefügten Ansprüche so ausgelegt werden, dass sie sowohl die bevorzugten Ausführungsformen als auch alle Änderungen und Modifikationen umfassen, die in den Anwendungsbereich der vorliegenden Erfindung fallen. Preferred embodiments and their effects are described in the present invention. However, additional changes and modifications to these embodiments can be made by those skilled in the art once the basic inventive concepts are learned. Therefore, the appended claims should be construed as covering the preferred embodiments as well as all changes and modifications that fall within the scope of the present invention.
Obwohl Ausführungsformen der Erfindung gezeigt und beschrieben worden sind, wird es einem Fachmann klar sein, dass eine Vielzahl von Änderungen, Modifikationen, Substitutionen und Variationen dieser Ausführungsformen gemacht werden können, ohne von den Prinzipien und dem Geist der Erfindung abzuweichen. Der Umfang der vorliegenden Erfindung wird durch die beigefügten Ansprüche und ihre Äquivalente begrenzt.Although embodiments of the invention have been shown and described, it will be apparent to those skilled in the art that numerous changes, modifications, substitutions and variations of these embodiments can be made without departing from the principles and spirit of the invention. The scope of the present invention is limited by the appended claims and their equivalents.
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CN115594496A (en) * | 2022-10-31 | 2023-01-13 | 安徽大学(Cn) | Medium-entropy ceramic with spinel structure and preparation method thereof |
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