Corrosion Resistance & Chemical Stability of Advanced Ceramics
Advanced ceramics have garnered growing attention across critical industries due to their exceptional corrosion resistance and chemical stability, especially under harsh environments such as high temperatures, strong acids/bases, and corrosive gases. Compared with metals and engineering plastics, advanced ceramics offer unmatched longevity and performance in chemically aggressive conditions, making them indispensable in semiconductor processing, chemical industries, aerospace, and energy applications.
What Is Corrosion Resistance and Why Does It Matter?
Corrosion resistance refers to a material’s ability to maintain its structure and performance when exposed to chemical environments—such as acids, alkalis, and salts—without degrading.
Advanced ceramics such as alumina (Al₂O₃), zirconia (ZrO₂), silicon carbide (SiC)및 silicon nitride (Si₃N₄) are inorganic, non-metallic materials with strong ionic or covalent bonding. This gives them much better resistance to corrosion than most metals and engineering plastics.
For advanced ceramics, this property is crucial because:
Chemical Stability Advantages of Advanced Ceramics
Factors Affecting Corrosion Resistance of Ceramics
Dissolution Rate of Ceramics in Aggressive Media (Experimental Data)
The following table shows measured dissolution rates of key ceramic materials in common corrosive media, indicating their long-term chemical durability:
| 재질 | Medium | Temperature | Duration | Dissolution Rate (mg/cm²/day) |
|---|---|---|---|---|
| 알루미나(Al₂O₃) | HCl (10%) | 100°C | 24 h | ~0.02 |
| 지르코니아(ZrO₂) | H₂SO₄ (30%) | 150°C | 24 h | ~0.015 |
| ZTA20 | HCl (10%) | 100°C | 24 h | ~0.025 |
| 질화규소(Si₃N₄) | NaOH (20%) | 80°C | 72h | ~0.01 |
| 질화 알루미늄(AlN) | DI Water (pH 7) | Room Temp | 7 days | ~0.5 |
| 실리콘 카바이드(SiC) | HNO₃ (50%) | 120°C | 48 h | <0.01 |
| 베릴륨 산화물(BeO) | HCl (10%) | 90°C | 24 h | ~0.02 |
| Hexagonal BN (h-BN) | H₂SO₄ (98%) | 100°C | 24 h | ~0.15 |
| MGC(가공 가능한 유리 세라믹) | NaOH (10%) | 80°C | 24 h | ~0.2 |
Note: Materials like AlN and MGC are more reactive in water or alkaline solutions, while SiC and Al₂O₃ demonstrate extreme inertness in both acid and base.
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Key Ceramic Materials: Properties and Use Cases
Click on the blue font to view detailed information of each advanced ceramic material:
| 재질 | Chemical Stability Highlights | Common Applications |
|---|---|---|
| 알루미나(Al₂O₃) | Highly inert in acidic and basic media | Semiconductor fixtures, medical implants |
| 지르코니아(ZrO₂) | Stable in acid; limited alkali resistance | Pumps, valves, sensors |
| ZTA20 | Improved toughness and corrosion resistance | Structural components, wear parts |
| 질화규소(Si₃N₄) | Strong against acids and thermal oxidation | Gas turbines, automotive engine parts |
| 질화 알루미늄(AlN) | Good chemical resistance, high thermal conductivity | Electronic substrates, heat sinks |
| 실리콘 카바이드(SiC) | Excellent resistance to virtually all chemicals | Chemical reactors, seals, heat exchangers |
| 베릴륨 산화물(BeO) | Chemically stable, thermally superior | Military electronics, space systems |
| 질화붕소(BN) | Inert, non-reactive even at high temperatures | Crucibles, insulators in reactive atmospheres |
| 가공 가능한 유리 세라믹(MGC) | Good chemical resistance, easy to machine | 프로토타입, 진공 부품 |
Related knowledge points:
올바른 세라믹을 선택하는 데 도움이 필요하세요?
Selecting the right advanced ceramic is critical to ensuring long-term reliability and optimal performance. Whether you need silicon nitride, silicon carbide or alumina ceramic materials, our materials offer industry-leading performance, durability and precision.
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Comparative Corrosion Resistance of Common Materials
This figure shows the dissolution rate comparison (unit: mg/cm²/day) of various advanced ceramic materials in three typical corrosive media, which facilitates intuitive understanding of the chemical stability of various advanced ceramic materials in acid, alkali and salt environments.
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