Zirconia Toughened Alumina (ZTA) Ceramic Tube

Catalog No.	ZTA1880
Appearance	White smooth surface
Purity	99.9%
Shape	Tube
Length	10~400 mm
Component	Alumina, Zirconia

Catalog No.

ZTA1880

Appearance

White smooth surface

Purity

99.9%

Shape

Tube

Length

10~400 mm

Component

Alumina, Zirconia

Description of ZTA Tube

Zirconia Toughened Alumina Ceramics (referred to as composite ceramics, ZTA) has the characteristics of whiteness, corrosion resistance, and good chemical stability. Alumina has a high hardness and the toughness of zirconia is good. The two materials form an excellent composite of high strength and high toughness, and the application is more widely used. ZTA ceramic has higher flexural strength and fracture toughness at normal temperature, so zirconia toughened ceramics have excellent wear resistance. The specific ratio of the two materials can be adjusted according to the actual use requirements of the user. The performance of zirconia toughened alumina ceramics is better than that of 99 alumina ceramics, and the price is much lower than that of zirconia ceramics; many alumina ceramics are not suitable for the occasion, which shows better cost performance than zirconia ceramics.

zirconia tube

Specification of ZTA Tube

		Condition	Unit	ZTA Substrate
		Condition	Unit	ZTA
Material		-	-	Al2O3/ZrO2
Color		-	-	White
Bulk Density		-	g/㎤	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･m1/2	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/(㎏･K)	720
Electrical	Dielectric Constant	1MHz	-	10.2
	Dielectric Loss Factor	1MHz	10-3	0.2
	Volume Resistivity	25°C	Ω･㎝	>1014
	Breakdown Strength	DC	㎸/㎜	>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 Tube

* Mechanical, electronic, petroleum, chemical, aerospace, and textile industries.
* Standoffs
* Insulators
* Probe bodies
* Bushing
* Valve seals
* Analytical instrument columns

Packaging of ZTA Tube

Our ZTA Tube is clearly tagged and labeled externally to ensure efficient identification and quality control. The products are separated by foam 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