Zirconia Toughened Alumina (ZTA) Ceramic Disc

Home

Products

Ceramic Material

ZTA1876 Zirconia Toughened Alumina (ZTA) Ceramic Disc

Catalog No.	ZTA187
Appearance	White smooth surface
Purity	99.9%
Shape	Disc
Component	Alumina, Zirconia
Max Working Temp. (℃)	1650 °C

SAM is a global supplier of Zirconia Toughened Alumina Ceramic parts with competitive prices and excellent service. All sizes of ZTA ceramic Discs are finished with fine grinding, regular appearance, and high dimensional accuracy. Other customized shapes of ZTA ceramic are on request.

INQUIRY

Add to Inquiry List

ZTA1876 Zirconia Toughened Alumina (ZTA) Ceramic Disc

Description

Specification

Description of ZTA Disc

Zirconia Toughened Alumina Ceramics (ZTA composite ceramics) possess notable characteristics such as whiteness, corrosion resistance, and excellent chemical stability. Alumina provides high hardness, while zirconia contributes to good toughness. The combination of these materials forms a superior composite with high strength and toughness, enabling a wide range of applications.

ZTA ceramics exhibit higher flexural strength and fracture toughness at normal temperatures, resulting in outstanding wear resistance. The ratio of alumina to zirconia can be adjusted to meet specific user requirements. Zirconia toughened alumina ceramics outperform 99% alumina ceramics in terms of performance while being more cost-effective compared to pure zirconia ceramics.

This makes ZTA ceramics an excellent choice when alumina ceramics are not suitable for a given application, offering improved cost performance and maintaining desirable mechanical properties.

zirconia

Specification of ZTA Disc

-		Condition	Unit	ZTA Substrate
-		Condition	Unit	ZTA
Material		-	-	Al₂O₃/ZrO₂
Color		-	-	White
Bulk Density		-	g/cm³	4
Surface Roughness Ra		-	µm	0.2
Reflectivity		0.3-0.4mmt	%	80
Reflectivity		0.8-1.0mmt	%	90
Mechanical	Bending Strength	3-point method	MPa	700
	Modulus of Elasticity	-	GPa	310
	Vickers Hardness	-	GPa	15
	Fracture Toughness	IF method	MPa･m^1/2	3.5
Thermal	Coefficient of Thermal Expansion	40-400°C	10^-6/K	7.1
	Coefficient of Thermal Expansion	40-800°C	10^-6/K	8
	Thermal Conductivity	25°C	W/(m･K)	27
	Thermal Conductivity	300°C	W/(m･K)	16
	Specific Heat	25°C	J/(kg･K)	720
Electrical	Dielectric Constant	1MHz	-	10.2
	Dielectric Loss Factor	1MHz	10^-3	0.2
	Volume Resistivity	25°C	Ω･cm	>10¹⁴
	Breakdown Strength	DC	kV/mm	>15

Performance of Al2O3, ZTA, and YTZ

Item	Unit	Alumina(AL2O3)				Zirconia(ZrO2)
Item	Unit	AL2O3≥95	AL2O3≥99	AL2O3≥99.5	AL2O3≥99.8	ZTA	YTZ
Bulk Density	g/cm3	3.7	3.80~3.85	3.85	3.9	3.8~4.6	6
Hardness	HRA≥	86	88	88	88	86~88	88~90
Bending Strength	Mpa≥	300	350	400	400	172~450	900
Maximum Service Temperature	℃	1500	1500	1500	1500	1400~1500	1500
Linear Expansion Coefficient	×10-6/℃	7.5	8.2	8.2	8.2
Dielectric Constant	εr(20℃,1MHz)	9	9.2	9.2	9.2
Dielectric Loss	tanδ×10-4,1MHz	3	2	2	2
Volume Resistivity	Ω·cm(20℃)	1013	1014	1014	1014	1013	1014
Breakdown Strength	KV/mm, DC≥	20	20	20	20
Acid Resistance	mg/cm2≤	0.7	0.7	0.7	0.7
Alkali Resistance	mg/cm2≤	0.2	0.1	0.1	0.1
Wear Resistance	g/cm2≤	0.2	0.1	0.1	0.1
The Compressive Strength	Mpa≥	2500	2500	2500	2800	2300~2900	2500
Flexural Strength	Mpa≥	200	350	350	350
Modulus of Elasticity	Gpa	300	350	350	350
Poisson's Ratio		0.2	0.22	0.22	0.22
Coefficient of Thermal Conductivity	W/m·K(20℃)	20	25	25	25

Applications of ZTA Disc

* Used in the mechanical, electronic, petroleum, chemical, aerospace, and textile industries.
* Suitable for crowns, inlays, porcelain veneers, and implant crowns in Dentistry
* Capacitor
* Substrates for semiconductor processing

Packaging of ZTA Disc

Our ZTA Disc is clearly tagged and labeled externally to ensure efficient identification and quality control. The products are separated by bubble bags for shockproof purposes and finally packed in wooden or carton boxes. Great care is taken to avoid any damage which might be caused during storage or transportation.

packing-disc

Frequently Asked Questions (FAQ)

Can ZTA Ceramic Discs be customized for specific applications?

Yes, ZTA ceramic discs can be customized in terms of composition, microstructure, shape, size, and surface finish to meet the specific requirements of different applications.

How do you handle and maintain ZTA Ceramic Discs?

ZTA ceramic discs should be handled with care to prevent damage, particularly during installation and operation. Regular inspection and maintenance may be necessary to ensure optimal performance and longevity.

Are ZTA Ceramic Discs suitable for high-temperature applications?

Yes, ZTA ceramic discs exhibit excellent thermal stability and can withstand high temperatures, making them suitable for use in environments with elevated operating temperatures.

Specification

-		Condition	Unit	ZTA Substrate
-		Condition	Unit	ZTA
Material		-	-	Al₂O₃/ZrO₂
Color		-	-	White
Bulk Density		-	g/cm³	4
Surface Roughness Ra		-	µm	0.2
Reflectivity		0.3-0.4mmt	%	80
Reflectivity		0.8-1.0mmt	%	90
Mechanical	Bending Strength	3-point method	MPa	700
	Modulus of Elasticity	-	GPa	310
	Vickers Hardness	-	GPa	15
	Fracture Toughness	IF method	MPa･m^1/2	3.5
Thermal	Coefficient of Thermal Expansion	40-400°C	10^-6/K	7.1
	Coefficient of Thermal Expansion	40-800°C	10^-6/K	8
	Thermal Conductivity	25°C	W/(m･K)	27
	Thermal Conductivity	300°C	W/(m･K)	16
	Specific Heat	25°C	J/(kg･K)	720
Electrical	Dielectric Constant	1MHz	-	10.2
	Dielectric Loss Factor	1MHz	10^-3	0.2
	Volume Resistivity	25°C	Ω･cm	>10¹⁴
	Breakdown Strength	DC	kV/mm	>15