6. Conclusion

Ceramics and glasses are complex materials, both in terms of structure and microstructure. Ceramics are multiphase materials in which a "long-range" order (several crystal lattices) in three dimensions prevails. The domain of crystalline coherence in a ceramic is called the "grain", hence the notion of polycrystalline material. In glasses, an order can only be described at very short distances (a few Å), which precludes the existence of properties linked to a crystal lattice.

What distinguishes glass from ceramics is that :

These are materials made up of grains, each characterized by its own crystalline structure, separated by grain boundaries. These grains do not necessarily all have the same physical properties (electrical, mechanical, etc.). The respective proportions of these phases and the way in which they are...

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Glossary

Bibliography

(1) - HAUSSONNE (J.-M.), CARRY (C.), BOWEN (P.), BARTON (J.) - Céramiques et verres, principes et techniques d'élaboration (traité des matériaux volume 16) - . Presses Polytechniques et Universitaires Romandes (PPUR) (2005).
(2) - GERL (M.), ISSI...

Standards and norms

Conditions normales à observer avant et pendant les essais de matériaux isolants électriques solides - EN 60212 -
Electrical insulating materials. Thermal endurance properties. Part 1: Aging methods and evaluation of test results Part 2: Determination of thermal endurance properties of electrical insulating materials. – Selection of test criteria Part 3: Instructions for calculating thermal endurance characteristics...

Regulations

REACH Directive : Regulation (EC) No 1907/2006 of the European Parliament and of the Council of December 18, 2006 concerning the Registration, Evaluation, Authorization and Restriction of Chemicals (REACH), establishing a European Chemicals Agency, amending Directive 1999/45/EC and repealing Council Regulation (EEC) No 793/93 and Commission Regulation (EC) No 1488/94 as well as Council Directive 76/769/EEC and Commission Directives...