Quarzrohr
Quarzplatte
Quarzstab
Optische Anwendungen
Halbleiterindustrie
Labor- und ChemieanwendungenQuartz 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.
| Eigenschaft Inhalt | Immobilienwerte |
|---|---|
| SiO2 | 99.99% |
| Dichte | 2,2×10³ kg/cm³ |
| Härte | 5,5 - 6,5 Mohs'sche Skala 570 KHN 100 |
| Zugfestigkeit | 4,8×10⁷ Pa (N/mm2) (7000 psi) |
| Druckfestigkeit | >1,1×10⁹ Pa (160.000 psi) |
| Wärmeausdehnungskoeffizient | 5,5×10-⁷ cm/cm-°C (20°C-320°C) |
| Wärmeleitfähigkeit | 1,4 W/m-°C |
| Spezifische Wärme | 670 J/kg-°C |
| Erweichungspunkt | 1730°C (3146°F) |
| Glühpunkt | 1210°C (2210°F) |
| Dehnungspunkt | 1120°C (2048°F) |
| Arbeitstemperatur | 1200°C (2192°F) |
| Elektrischer spezifischer Widerstand | 7×10⁷ Ohm cm (350°C) |
| Größe | Kundenspezifisch |
| Logo | Kundenspezifisches Logo akzeptieren |
Hochtemperaturbeständigkeit
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%.
Anwendungsszenario
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.
Quartz XRD Sample Holder
Quarz-Durchflusszellen
Petrischale aus Quarz
Custom Quartz Petri Dish
Quartz Cylindrical Cuvette
Quartz Round Screw-Top Cuvette
Häufig gestellte Fragen
Quarzglas ist ein hartes und sprödes Material mit ausgezeichneten physikalischen und chemischen Eigenschaften, extrem hoher mechanischer Härte, guter elektrischer Isolierung, hoher Temperatur- und Korrosionsbeständigkeit, geringer und stabiler Verzögerungsleistung, guter Lichtdurchlässigkeit usw. Es findet breite Anwendung in der Halbleiterindustrie, Optik, Elektrizität, Chemie, Luft- und Raumfahrt, Automobilindustrie und anderen Bereichen. Harte und spröde Werkstoffe sind schwer zu bearbeiten, und in vielen Bereichen werden dringend Schneidverfahren mit geringem Kanteneinbruch, geringem Materialverlust, geringer Querschnittsrauheit und einem großen Schnittdickenbereich benötigt. Das traditionelle Schneidverfahren für Quarzglas ist das mechanische Schneiden, d. h. das Scheibenschneiden. Zu den nicht-traditionellen Schneidverfahren gehören Wasserstrahlschneiden, elektrochemisches Drahterodieren, kontinuierliches Laserschneiden usw. Das mechanische Schneiden ist kostengünstig, aber der Kontakt zwischen der Scheibe und dem Material verursacht einen hohen Werkzeugverschleiß, und das Material wird leicht durch das Werkzeug verschmutzt. Quarzglas neigt zu Kanteneinbrüchen, Mikrorissen und Eigenspannungen, was die Festigkeit und Leistung des Materials beeinträchtigt! Das Schneiden von Kurven ist schwierig und erfordert Nachbearbeitungen wie Schleifen und Polieren. Das Laserschneiden kommt nicht direkt mit dem Material in Berührung, hat keine Kontaktspannungen und kann komplexe Kurvenschnitte durchführen. Der Pikosekundenlaser hat die Vorteile eines kleinen Punktdurchmessers, einer hohen Präzision, einer kurzen Einwirkungszeit auf das Material und eines kleinen Einwirkungsbereichs und eignet sich für die Bearbeitung von harten und spröden Materialien.
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