Entdecken Sie verschiedene Arten von Siliziumnitridkeramik und ihre industriellen Vorteile

There are various types of Siliziumnitridkeramik, including sintered silicon nitride and hot-pressed silicon nitride. They vary in properties, applications, and how they resolve problems in your advanced engineering or other extreme temperature environments. This guide explores silicon nitride ceramic types, their properties, benefits, and how to select the right type for your application.

Überblick über Siliziumnitridkeramik (als fortschrittliches Keramikmaterial)

• Siliziumnitrid ist ein chemische Verbindung (a white, high-melting-point solid comprising silicon and nitrogen elements), and is represented with the formula Si3N4.

• A Si3N4 ceramic offers your process exceptional thermal resistance, mechanical strength, and thermodynamic stability.

• Die verschiedenen Arten dieser fortgeschrittenen Keramik are each tailored to a specific use, and are often lightweight, very hard, and non-corrosive.

5 Main Types Of Silicon Nitride Ceramics

Classification of these types of silicon nitride ceramics is based on how they are produced and their exemplary properties.

Gesinterte Siliziumnitridkeramik (SSN)

• Gesinterte Siliziumnitridkeramiken sind Materialien, die durch druckloses Sintern fine powders in a nitrogen gas atmosphere (at high temperatures of around 1750°C). They are widely used in your applications due to their balance of cost and performance.

• SSN ceramics offer your product excellent mechanical strength, fracture toughness, and oxidation resistance. Their mechanical properties make them ideal for your industrial application in making automobile engines and bearings, or metal forming.

“Switching to SSN in our turbochargers helped us reduce failure rates by 55%…It has been flawless for over 18 months now, and helps us achieve materials with near-zero porosity.”

 — Dan J., leitender Ingenieur bei AutoSys Components

Hot-pressed Silicon Nitride Ceramics (HPSN)

• HPSN is made using uniaxial pressure during the sintering process. Magnesia is added to a fine Si3N4 powder, and then the powder is placed in a graphite die.

• HPSN is typically costly, but it offers your product superior density and mechanical properties. It’s therefore ideal for your applications that require extreme precision and thermal shock, such as semiconductor manufacturing.

„HPSN-Fräser haben die Geschwindigkeiten und die Effizienz bei der Verarbeitung unserer Hülsen deutlich erhöht.“

— Haoyu C., Leiter bei Millcutters Ltd.

Reaction-bonded silicon Nitride Ceramics (RBSN)

• RBSN is made through a careful process involving nitriding a silicon dough or compact at approximately 1450°C. RBSN also shrinks very little during processing, making it suitable for near-net shape production. This makes this type of silicon nitride ceramics a fit for your use in Thermoelement Schutzrohre und Isolierringe.

„RBSN hat uns eine kostengünstige Lösung für unsere Thermoelement-Abschirmungen geboten, ohne die Zuverlässigkeit zu beeinträchtigen.“

— Carlos M., Lead at HeatWorks Ltd.. 

Gasdruckgesintertes Siliziumnitrid (GPSN)

• GPSN is obtained at very high nitrogen pressures, inhibiting the pyrolysis of silicon nitride and promoting the growth of Si3N4 grains. This ensures your process yields high-toughness ceramics with a high density.

• Compared to SSN, GPSN offers your application improved creep resistance at elevated temperatures. GPSN is an ideal choice for your production of wear-resistant components, nozzles, and dies for mid-range prices.

Gesinterte reaktionsgebundene Siliziumnitridkeramik (SRBSN)

• Sintered Reaction-Bonded Silicon Nitride Ceramics is based on RBSN, aimed at improving RBSN’s density and mechanical properties. SRBSN combines the shape-control benefits of RBSN with enhanced mechanical performance close to that of SSN.

Anwendungen von Siliziumnitridkeramik für Ihre Branche

• Silicon nitride ceramics offer your application outstanding physical and chemical characteristics. These silicon nitride properties include thermal resistance, lightweight strength, and chemical inertness.

• Your ideal industry applications include automotive, aerospace, electronics, medical, and industrial.

• Silicon nitride is also perfect for your LED packaging due to its optical transparency and being highly compatible.

Benefits Your Process Gets From Using Silicon Nitride

• Egal ob Sie ein Ingenieur or designer, silicon nitride ceramic offers high strength, excellent thermal shock resistance, superior wear resistance, corrosion resistance, and electrical insulation.

• And if you’re working in high-performance environments, expect longer equipment life, better efficiency, resilience, sustainability, and lower maintenance costs.

• Siliziumnitrid löst technische Probleme und bietet eine zuverlässige, leistungsstarke Lösung zum Ersatz von Metallen, die durch Hitze oder Korrosion zerfallen. Ein Beispiel hierfür sind SSN-Lager, die den Verschleiß reduzieren, oder GPSN-Schneidwerkzeuge, die länger scharf bleiben.

„Durch die Umstellung auf Siliziumnitrid bei mehreren Komponenten konnten wir unsere Wartungsausfallzeiten um 44% verkürzen.“

— Jing M., Betriebsleiter bei AeroSeal

Eine schnelle Vergleichstabelle der verschiedenen Arten von Siliziumnitridkeramik

Eine Vergleichstabelle zur Leistung von Siliziumnitridkeramik im Vergleich zu anderen Hochleistungskeramiken

So wählen Sie den richtigen Siliziumnitridtyp für Ihre Anwendung

• When choosing the right type of silicon nitride ceramic, compare the specs for your specific industry. Asses the temperature and load requirements, check how the budget fares, and then match those considerations with your industry’s required lifespan and precision. Plus, consider if dimensional stability or near-net shape is critical for your component.

Häufig gestellte Fragen zu Siliziumnitridkeramik

Welche Arten von Siliziumnitridkeramik gibt es?

Die fünf Haupttypen von Siliziumnitrid sind SSN, HPSN, RBSN, GPSN und SRBSN.

Welche Art von Siliziumnitrid ist am haltbarsten?

HPSN bietet aufgrund seiner Dichte und geringen Porosität höchste Haltbarkeit.

Kann man Siliziumnitrid in der Elektronik verwenden?

Ja. Siliziumnitrid hat isolierende und nicht korrosive Eigenschaften.

Ist Siliziumnitrid für Ihre Hochtemperaturanwendungen geeignet?

Ja. Die meisten Siliziumnitridarten arbeiten bei sehr hohen Temperaturen.

Ist Siliziumnitrid teuer?

Die Kosten sind relativ höher als bei herkömmlicher Keramik oder Metall, aber die Haltbarkeit und die Leistungsvorteile übersteigen die Kosten.

Abschließende Gedanken und Ihr Fazit

Silicon nitride is an advanced ceramic that solves your engineering problems. The different types, including SSN, HPSN, RBSN, GPSN, and SRBSN, offer your product excellent performance in harsh environments. Contact your Anbieter today to request a quote or learn more about the strength, resilience, and reliability of silicon nitride ceramics.