Scientists have developed a new type of boron nitride ceramic crucible that features small dimples on its inner surface. These dimples help spread heat evenly when testing tiny samples in thermal analysis. The design solves a common problem where uneven heating can lead to inaccurate results.
(Boron Nitride Ceramic Crucibles with Dimples for Even Heating of Small Samples in Thermal Analysis)
Boron nitride is already known for handling high temperatures and resisting chemical reactions. This makes it ideal for use in labs that study how materials behave under heat. The new dimpled version improves on this by ensuring every part of the sample gets the same amount of heat.
The crucibles are made using a special pressing method that forms the dimples without weakening the material. Tests show that samples placed in these crucibles heat up faster and more uniformly than in smooth-walled versions. This is especially useful for researchers working with limited or expensive materials where precision matters.
Thermal analysis techniques like differential scanning calorimetry and thermogravimetric analysis rely on consistent temperature control. Even small hot or cold spots can skew data. The dimpled crucible reduces those risks by promoting better contact between the sample and the crucible wall.
Manufacturers say the new crucibles are now available for research labs and industrial testing facilities. They come in standard sizes that fit most commercial thermal analyzers. Users do not need to change their equipment or methods to benefit from the improved design.
(Boron Nitride Ceramic Crucibles with Dimples for Even Heating of Small Samples in Thermal Analysis)
This innovation builds on decades of work with boron nitride ceramics. It shows how small changes in shape can lead to big improvements in performance. Labs using these crucibles report clearer data and fewer repeat tests.