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magnesium oxide

TATECERA® CMGH

High Purity Magnesium Oxide Ceramics

High purity magnesium oxide ceramics products made of 99.99%-pure magnesium oxide material

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Features

The magnesium oxide is used as a refractory under severe condition. Because its melting point (3098K) is the highest in the oxide and it is excellent in thermal conductivity (60W・m^-1・K^-1).
The magnesium oxide is superior in corrosion resistance in the molten metal. The magnesium oxide can be used for a lot of metals compared with the aluminium oxide.
Additionally, the introduction of impurities from the crucible can be reduced by using a crucible made of magnesium oxide with 99.99% purity (hence fewer impurities).
Furthermore, as a substantia compacta it features impenetrability to vapor and the like.
Tateho is glad to receive an order, even for a single item.

Usages

Crucibles used to melt metal (PZT)
Tools for furnaces to sinter ceramics (YBCO)

Chemical Composition

Purity of MgO	99.95％

Physical Properties (Typical)

Category	Value
Bulk density (10³kg・m^-3)	3.40
Water absorption (％)	0.05
Three point bending strength (MPa)	216
Thermal expansion coefficient (10^-6・K^-1)	13.5
Thermal conductivity (W・m^-1・K^-1)	45.8
Specific heat (J・kg^-1・K^-1)	900

Measuring method
• Bulk density: Archimedian method
• Bulk density: Archimedian method
• Three point bending strength: JIS R 1601
• Coefficient of thermal expansion: JIS R 2207-3
• Thermal conductivity: laser flash method
• Specific heat: laser flash method
*The properties are the typical values and not a guaranteed values.