Magnesia Partially Stabilized Zirconia

Mg-PSZ Ceramics

Zirconia naturally occurs in the form of the mineral baddeleyite. For ceramics purposes, however, it is extracted from zirconium sand and other minerals containing zirconium in order to satisfy high standards of purity.fdfdsa

Zirconia offers chemical and corrosion resistance at high temperatures up to 2100°C – well above the melting point of Alumina. In its pure form, crystal structure changes limit use in mechanical/temperature applications, but stabilised Zirconias with Ytrium Oxide or Magnesium additives can produce materials with very high strength, hardness and in particular, toughness.

- Such products are produce by magnesia partially stabilized zirconia, which have very different properties compare to 3Y-TZP;

- Such Mg-PSZ products have very good mechical properties in high temperature and with Max. using temperature 2000°C;

- Such Mg-PSZ products can be used in hot and humidity environment for a long time without "Low temperature aging";

- Compare to 3Y-TZP, Such Mg-PSZ products have very good themal shock resistance;

- Very good sesistance to chemical corrosion, ziconia can stable in acid, alkali, liquid glass and molten metal.

Properties of Mg-PSZ Ceramics
Property	Item	Data	Unit
Mechanical Characteristics	Color	Yellow
	Density	5.7	g/cm3
	Bending Strength	450	MPa
	Compressive strength	2,500	MPa
	Elastic Modulus	250	GPa
	Fracture Toughness	6~7	MPa m1/2
	Weber Coefficient	12	m
	Vickers Hardness (HV 0.5)	1,100	MPa
Thermal Characteristics	Coefficient of Line Thermal Expansion	10	10-6 K-1
	Thermal Conductivity	3	W/mK
	Thermal Shock Resistance (Put in Water)	450	∆T °C
	Max Working Temperature	2,100	°C
Electrical Characteristics	Volume Resistance at 20°C	>1013	Ωcm
	Dielectric Strength	13×105	V/m
	Dielectric Constant	28	εr
	Dielectric Loss Angle at 20°C(1MHz)	0.0017	tanδ
Chemical Characteristics	Nitric Acid (60%) 90°C	0.1	WT Loss mg/cm2/day
	Sulphuric Acid (95%) 95°C	0.34
	Caustic Soda (30%) 80°C	0.95