Magnesium Stabilized Zirconia Ceramic

Possessing the highest fracture toughness among engineering ceramics

Material	Magnesium Stabilized Zirconia
Density	5.7 g/cm³
Roughness	Ra0.01um
Maximum size	400*800mm

Introduction

Magnesium Stabilized Zirconia (Mg-PSZ) is a partially stabilized zirconia ceramic formed by adding magnesium oxide (MgO) as a stabilizer to zirconia (ZrO₂). Its core mechanism is to achieve phase change toughening effect by regulating the crystal phase change behavior of zirconia through MgO doping. At room temperature, the material is mainly cubic phase (c-ZrO₂), while retaining some metastable tetragonal phase (t-ZrO₂); when subjected to external force or crack extension, the tetragonal phase transforms to the monoclinic phase (m-ZrO₂), accompanied by volume expansion (3-5%), which can compress the crack tip and absorb energy, significantly improving the fracture toughness, hardness and strength of the material.

Magnesium Stabilized Zirconia Advantages

✅ Non-toxic

✅ High hardness (HV1100)

✅ Low thermal conductivity (3 W/m·K)

✅High strength (flexural strength 500Mpa)

✅ High fracture toughness (6-7MPa·m¹/²)

✅ Stability under drastic temperature changes

✅ Resistant to chemical corrosion

✅ High temperature resistance (short-term maximum tolerance of 1600C°)

Application

✅ Mechanical seals

✅ Bearings, valves

✅ Aerospace components

✅High temperature linings

✅ Surgical instruments and medical implants

✅ Oxygen sensors

✅ High frequency electronic substrates

Material Properties

Property	Unit	Magnesium Stabilized Zirconia
Density	g/cm³	5.7
Vickers Hardness	HV	1100
Flexural Strength	MPa	250
Compressive Strength	MPa	2000
Fracture Toughness	MPa·m¹/²	6
Bulk Modulus	GPa	270
Poisson’s Ratio		0.27
Young’s Modulus	GPa	210
Thermal Conductivity	W/(m·K)	3
Maximum Operating Temperature	°C	2100
Specific Heat	J/(kg·K)	0.45
Heat Shock Resistance Temp	ΔT°C	300
Linear Expansion Coefficient	10^-6/°C	10.5
Dielectric Constant, 1 MHz		28
Dielectric Strength	V/m	13×10⁵
Volume Resistivity @ 25°C	Ω·cm	>10¹⁴

Magnesium Stabilized Zirconia Manufacturer

We are a professional manufacturer of ceramics, glass and hard and brittle materials, with many years of experience in machining Magnesium Stabilized Zirconia ceramics. Relying on advanced equipment and rich experience, we are committed to providing customers with high standards and quality services that exceed expectations. If you have project needs in the near future, please feel free to contact our expert team and we will serve you wholeheartedly.

FAQ

What are the advantages of MSZ compared to other stabilizers (such as Yttria, Calcia)?

Features of MSZ compared to yttrium-stabilized (YSZ) and calcium-stabilized (CSZ) zirconia:

Better thermal shock resistance: The cubic crystal structure of MSZ is more stable under rapid cooling and heating conditions, and has higher crack propagation resistance610.

Environmental adaptability: In high temperature and high humidity environments, the mechanical stability of MSZ is better than that of YSZ, which may deteriorate due to phase change610.

Economical: Compared with the high cost of YSZ, MSZ provides higher cost performance in some industrial scenarios

What challenges should you be aware of when processing magnesium-stabilized zirconia?

Sintering shrinkage: The shrinkage rate after sintering is about 20%, and the size needs to be pre-compensated in the design stage

High hardness: Vickers hardness reaches 1100 HV0.5, and diamond tools are required for precision processing or grinding

Cost and time: Due to the toughness and hardness of the material, the processing process is time-consuming and costly, suitable for customized needs