Dilatometry (DIL)
What is DIL?
Dilatometry (DIL) is a thermal analysis technique that measures dimensional changes in materials as a function of temperature or time. It tracks expansion, shrinkage, and phase transitions to test materials in R&D, production, and failure analysis.
Principle of work:
It provides critical data on:
- Thermal Expansion – Quantifies linear or volumetric expansion coefficients (CTE), essential for understanding material behavior under temperature variations.
- Phase Transitions – Detects subtle changes in dimensions during processes like sintering, crystallization, or glass transitions (Tg), complementing DSC data.
- Sintering & Densification – Monitors shrinkage rates during firing or heat treatment, crucial for ceramics, metals, and powder metallurgy.
- Reaction Kinetics – Tracks dimensional changes during chemical reactions, curing, or decomposition to determine reaction progress and stability.
Application
- Ceramics & Glass – Optimizing firing cycles by measuring sintering shrinkage and thermal expansion mismatch to prevent cracking.
- Metals & Alloys – Evaluating CTE for aerospace components and studying phase transformations in heat treatments.
- Polymers & Composites – Characterizing cure shrinkage in thermosets and expansion behavior in thermoplastic applications.
- Quality Control – Ensuring batch consistency by comparing expansion profiles and detecting anomalies in production materials.
- By providing precise dimensional data under thermal stress, DIL helps engineers and researchers predict material performance, prevent failure, and optimize manufacturing processes.
Features | DIL 101 LT | DIL 102 LT | DIL 102 HT |
Temperature range | RT to 1100°C | RT to 1100°C | RT to 1500°C |
Heating Range | 1 to 20 °C/min | 1 to 20 °C/min | 1 to 20 °C/min |
Measuring Range | ± 2500 µm | ± 2500 µm | ± 2500 µm |
Resolution | 10 nm/digit | 2 nm/digit | 2 nm/digit |
Sample length | 0 to 50 mm | 0 to 50 mm | 0 to 50 mm |
Sample Diameter | 0.5 up to 9 mm | 0.5 up to 9 mm | 0.5 up to 9 mm |
Atmosphere | - | Inert, Vacuum, Static, MFC | Inert, Vacuum, Static, MFC |
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