さまざまな種類の窒化ケイ素セラミックとその産業上の利点を発見する

There are various types of 窒化ケイ素セラミックス, 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.

窒化ケイ素セラミック（先端セラミック材料として）の概要

• 窒化シリコンは 化合物 (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.

• この高度な セラミック 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.

焼結窒化ケイ素セラミックス（SSN）

• 焼結窒化ケイ素セラミックスは、圧力をかけずに 焼結 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.、AutoSys Components シニア エンジニア

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 フライスカッターにより、スリーブ加工の速度と効率が大幅に向上しました。」

— ミルカッターズ株式会社 リーダー Haoyu C.

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 熱電対 保護管と絶縁リング。

「RBSN は、信頼性を損なわずに、熱電対シールドにコスト効率の高いソリューションを提供してくれました。」

— Carlos M., Lead at HeatWorks Ltd.. 

ガス圧焼結窒化ケイ素（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.

焼結反応結合型窒化ケイ素セラミックス（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.

窒化ケイ素セラミックスの産業分野への応用

• 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

• あなたが エンジニア 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.

• 窒化ケイ素は、熱や腐食によって劣化する金属に代わる、信頼性の高い高性能ソリューションを提供することで、エンジニアリングの課題を解決します。摩耗を軽減するSSNベアリングや、切れ味を長く維持するGPSN切削工具などがその例です。

「複数のコンポーネントをシリコン窒化物に切り替えることで、メンテナンスによるダウンタイムが 44% 削減されました。」

— AeroSealのオペレーションマネージャー、Jing M.

各種窒化ケイ素セラミックの簡単な比較表

窒化ケイ素セラミックスと他の先進セラミックスの比較表

アプリケーションに適したシリコン窒化物の種類を選択する方法

• 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.

窒化ケイ素セラミックスに関するよくある質問

窒化ケイ素セラミックスにはどのような種類がありますか?

シリコン窒化物の主な 5 つのタイプは、SSN、HPSN、RBSN、GPSN、SRBSN です。

最も耐久性が高いのはどのタイプの窒化シリコンですか?

HPSN は、密度と低多孔性により最高の耐久性を実現します。

電子機器に窒化シリコンを使用できますか?

はい。窒化シリコンは絶縁性と非腐食性を備えています。

窒化シリコンは高温用途に適していますか?

はい。ほとんどの種類の窒化シリコンは非常に高温で動作します。

窒化シリコンは高価ですか?

従来のセラミックや金属に比べてコストは比較的高くなりますが、耐久性と性能上の利点はコストを上回ります。

最終的な考えとあなたの持ち帰り

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 サプライヤー today to request a quote or learn more about the strength, resilience, and reliability of silicon nitride ceramics.