Honesty high melting point magnesium oxide crucible

Product Overview

Description

Honesty high melting point magnesium oxide crucible

 

MgO style is cubic crystal system structure of ionic bonding compound, belonging to the NaCl face-centered cubic structure,unit cell contains four MgO molecular,each of the O^2-ions surrounded by six Mg²⁺ions,similarly,each Mg²⁺ ions also surrounded by six O^2-ion,MgO lattice constant a = 0.42 mm.

 

 Using hot pressing sintering process can produce fully dense polycrystalline magnesium oxide crucible and there was no pores, no light scattering,magnesium oxide crucible become transparent ceramics.

 

The main characteristic of magnesium oxide crucible

1,Magnesium oxide crucible have high melting point 2800 ℃. High vapor pressure, temperature of 2300 ℃ in a vacuum, volatile,so magnesium products using temperature limit is under 2200 ℃ in air, reducing atmosphere is 1700 ℃,vacuum atmosphere is 1600 ℃.

 

2,Magnesium oxide crucible belongs to the weak alkaline materials, with good alkaline slag erosion resistance.

 

3,Magnesium oxide crucible in nitrogen atmosphere, magnesium oxide and carbon don't have no reaction.

 

The main application

 

Magnesium oxide crucible can be used for smelting metal crucible or molten metal casting molds, these metals include iron, nickel, zinc, aluminum, molybdenum, magnesium, copper, platinum, cobalt, don’r react with polycrystalline magnesium oxide, in addition, in the atomic energy industry,melting high purity thorium and uranium is very appropriate also.

 

Technical Data Sheet(magnesium oxide crucible)

 

Name	Unit		Data
content	%		99.5%
density	g/cm3		3.58
Melting Point	℃		2800
The young’s modulus	GPa		300
Mohs hardness			6
Thermal conductivity	W/(cm.K)	100℃	7.1
		1000℃	37.6
Thermal expansion coefficient	℃ (0-1000℃)		13.9x10-6
Open porosity	%		3-4
Compressive strength	MPa		800
Bending strength	MPa		40
Electrical Resistivity	Ω.cm		108