水晶管
石英プレート
石英ロッド
光学アプリケーション
半導体産業
研究室および化学用途
Quartz XRD sample holders are used to load quartz samples for X-ray diffraction experiments. During sample preparation, it is essential to ensure that the sample powder is dry, has uniform particle size, and has a flat, tightly packed surface to obtain accurate diffraction data. When using the sample holder, the sample should be placed at the center of the stage, and the sample surface should be tangent to the focusing circle to avoid height errors affecting the test results.
| 物件内容 | 資産価値 |
|---|---|
| 二酸化ケイ素 | 99.99% |
| 密度 | 2.2×10³ kg/cm³ |
| 硬度 | 5.5 - 6.5 モース硬度 570 KHN 100 |
| 引張強度 | 4.8×10⁷ Pa (N/mm2) (7000 psi) |
| 圧縮強度 | >1.1×10⁹Pa (160,000 psi) |
| 熱膨張係数 | 5.5×10-⁷cm/cm-°C (20°C-320°C) |
| 熱伝導率 | 1.4 W/m-°C |
| 比熱 | 670 J/kg-°C |
| 軟化点 | 1730度C（3146度F） |
| アニーリングポイント | 1210度C（2210度F） |
| ストレイン・ポイント | 1120度C（2048度F） |
| 作業温度 | 1200°C |
| 電気抵抗率 | 7×10⁷Ωcm (350°C) |
| サイズ | カスタマイズ |
| ロゴ | カスタマイズされたロゴ |
高温耐性
Quartz XRD sample holders are made of quartz glass, which has a softening point of approximately 1730°C. They can be used for extended periods at 1100°C and for short durations at temperatures up to 1450°C.
Chemical Stability
Quartz glass is highly resistant to chemical reactions with most acids. Its acid resistance is approximately 30 times higher than ceramics and 150 times higher than stainless steel. It exhibits exceptional chemical stability, particularly at high temperatures.
Low Thermal Expansion Coefficient
Quartz glass has an extremely low coefficient of thermal expansion, allowing it to withstand rapid temperature changes without fracturing. This provides excellent thermal stability.
Good Optical Transmission
Quartz glass exhibits excellent optical transmission across the entire spectrum from ultraviolet to infrared. Its visible light transmission is greater than 93%, and in the ultraviolet spectral region, its transmission can exceed 90%.
アプリケーション・シナリオ
Crystal Structure Analysis in Materials Science
Quartz XRD sample holders are crucial in various fields of materials science, especially for crystal structure analysis. By analyzing the diffraction patterns produced from the interaction of X-rays with a material, vital information about the material’s crystal structure, grain size, phase composition, and stress state can be obtained.
Phase Composition and Multi-Phase Material Analysis
Quartz XRD sample holders are used to identify components and their relative proportions within polycrystalline materials such as alloys, ceramics, and composites. They are also important for investigating the local structural characteristics of amorphous materials, such as glass and amorphous alloys.
Phase Transition and Thermal Stability Studies
Quartz XRD sample holders enable the study of phase transition behavior in materials under varying temperature or pressure conditions. By heating or cooling samples and monitoring their diffraction patterns, researchers can determine whether phase transitions occur under specific conditions.
Critical Material Applications in Semiconductor Manufacturing
In the semiconductor industry, quartz XRD sample holders play an important role because of their high-temperature and corrosion-resistant properties. They are used in high-temperature devices, such as furnace tubes and glass boats for diffusion and oxidation processes, and in low-temperature devices, such as quartz rings for etching processes.
When using quartz XRD sample holders for experiments, the following points should be observed:
Ensure the sample holder is clean and free of dust to avoid contaminating the sample and affecting diffraction results.
The sample should be evenly distributed in the sample holder to obtain optimal diffraction signals.
Avoid exposing the sample holder to drastic temperature changes to prevent the quartz glass from cracking due to excessive temperature differentials.
When using the sample holder at high temperatures or under specific conditions, follow the manufacturer’s guidelines and safety regulations.
The following steps can be used to clean and maintain quartz XRD sample holders:
Gently remove dust and residue from the surface of the sample holder using a soft cloth or brush.
For stubborn stains, use a mild detergent and water for cleaning, but ensure thorough rinsing and drying to avoid any chemical residue.
Regularly check the sample holder for cracks or damage, particularly after high-temperature or high-pressure experiments.
Store in a dry, clean place, away from direct sunlight and humid environments.
The lifespan of a quartz XRD sample holder depends on various factors, including:
Usage frequency and experimental conditions; frequent use or use under extreme conditions may shorten its lifespan.
Maintenance and cleanliness of the sample holder; good maintenance can prolong its lifespan.
Material and manufacturing quality of the sample holder; high-quality quartz glass is typically more durable.
よくある質問
石英ガラスは硬くて脆い材料で、物理的、化学的性質が優れ、機械的硬度が非常に高く、電気絶縁性がよく、高温と耐食性に優れ、遅延性能が低く安定で、光透過性がよい。半導体、光学、電気、化学、航空宇宙、自動車などの分野で広く使用されている。硬くて脆い材料は加工が難しく、多くの分野で刃先の倒れが小さく、材料ロスが少なく、断面粗さが小さく、切断厚さ範囲が広い切断加工が急務となっている。石英ガラスの伝統的な切断方法は機械的切断、すなわち砥石切断である。非伝統的な切断方法には、ウォータージェット切断、電気化学放電ワイヤー切断、連続レーザー切断などがある。機械的切断はコストが低いが、ホイールと材料が接触するため工具の摩耗が大きく、材料が工具によって汚染されやすい。石英ガラスはエッジ崩壊、マイクロクラック、残留応力が発生しやすく、材料の強度や性能に影響する！曲線切断が難しく、研削や研磨などの後処理が必要。レーザー切断は材料に直接触れないため、接触応力がなく、複雑な曲線切断が可能です。ピコ秒レーザーは、スポット径が小さい、精度が高い、材料との作用時間が短い、作用面積が小さいなどの利点があり、硬くて脆い材料の加工に適しています。
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