Si3N4-Keramikkomponenten in Luft- und Raumfahrtqualität, beständig gegen hohe Temperaturen von 1400 ° C, militärische Qualitätssicherung

Kundenspezifische Siliziumnitrid-Keramikteile

Siliziumnitridkeramik (SiN) gehört heute zu den keramischen Strukturwerkstoffen mit der besten Gesamtleistung. Mit seiner ultrahohen Festigkeit, Temperaturwechselbeständigkeit und hervorragenden mechanischen Stabilität i...

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SISIC (RBSIC / REFEL) Eigenschaften
Artikel	Einheit	Typische Werte
Physikalische Eigenschaften
Farbe		Grau Schwarz
Dichte	g / cm3	3.04
Gehalt an Siliziumkarbid	%	82-83
Mechanische Eigenschaften
Moh 's Härte		9.15
Vickers-Härte HV	kg / mm2	3000
Biegefestigkeit	MPa (20C)	250
Biegefestigkeit	MPa (1200C)	280
Druckfestigkeit	GPa @ ambient	2.9
Elastizitätsmodul	MPa (20C)	330
Elastizitätsmodul	MPa (1200C)	300
Bruchzähigkeit	MPa m1 / 2	4
Verhältnis Fisch		0.24
Thermische Eigenschaften
Maximale Arbeitstemperatur	C	1380
Wärmeleitfähigkeit	W / m.K	150
Wärmeausdehnungskoeffizient	10-6 / C	4.5
Elektrische Eigenschaften
Elektrischer Widerstand	Om	10

Eigenschaften des Kernmaterials

Extreme mechanische Eigenschaften

Biegefestigkeit: 800-1200 MPa (HIP-Sinterverfahren)

Bruchzähigkeit: 6-7.5 MPa · m¹ / ² (doppelt so hoch wie bei Aluminiumoxidkeramik)

Vickershärte: 1600-1800 HV

Außergewöhnliche thermische Leistung

Maximale Betriebstemperatur: 1400C (unter oxidierender Umgebung)

Wärmeausdehnungskoeffizient: 3,210 Ą/ C (perfekte Übereinstimmung mit Lagerstahl)

Wärmeleitfähigkeit: 15-30 W / (m · K)

Anwendungsfelder

1. Luft- und Raumfahrt

Motorteile: Turbinenrotorblätter, Brennkammerauskleidungen

Satellitensysteme: Keramiklager für Trägheitsnavigationssysteme

Überschallflugzeuge: Wärmeschutz-Keramikmatrix-Verbundwerkstoffe

2. Energieanlagen

Windkraftanlagen: Keramikringe zur Isolierung von Generatoren der Megawatt-Klasse

Kernkraftkomponenten: Keramikgelenke für Manipulatoren zur Verarbeitung abgebrannter Brennelemente

Photovoltaikherstellung: Wärmefeldmaterialien für polykristalline Siliziumbarrenöfen

3. Präzisionsmaschinen

Hochgeschwindigkeitslager: DN-Werte über 310Ąmm · r / min

Metallumformung: keramische Trennringe für Strangguss

Halbleiterausrüstung: Wafer-Transfer-Roboterarm-Komponenten

Produkt-Anfrage

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