Name: ZTA1877 Zirconia Toughened Alumina (ZTA) Ceramic Rod
Brand: Stanford Advanced Materials (SAM)
SKU: ZTA1877
Availability: InStock

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ZTA1877 Zirconia Toughened Alumina (ZTA) Ceramic Rod

Catalogue Number	ZTA1877
Appearance	White smooth surface
Purity	99%
Shape	Rod
Length	150~300 mm
Composition	Alumina, Zirconia

Ceramic rods manufactured from hardened zirconium oxide (ZTA) exhibit corrosion resistance and chemical stability. Stanford Advanced Materials (SAM) supplies Zirconia Toughened Alumina (ZTA) ceramic rods.

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Description

Specification

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Ceramic Rods Made from Aluminium Oxide Containing Zirconium Dioxide (ZTA) – Description

Zirconium dioxide‐hardened aluminium oxide ceramic (ZTA composite ceramic) has defined properties including a set level of whiteness, corrosion resistance and chemical stability. Aluminium oxide contributes hardness, while zirconium dioxide increases fracture toughness. The combination of these materials produces a composite with measured strength and toughness, thereby allowing its use in a variety of technical applications.

At ambient temperatures, ZTA ceramic exhibits increased bending strength and fracture toughness. This results in improved wear resistance. The ratio of aluminium oxide to zirconium dioxide can be adjusted to meet specific user requirements. Zirconium dioxide–prestressed aluminium oxide ceramic performs at a higher level than 99 % aluminium oxide ceramic and is more cost‑efficient than pure zirconium dioxide ceramic.

ZTA-rod

Ceramic Rods Made from Hardened Zirconium Dioxide (ZTA) – Specification

		Condition	Unit	ZTA Substrate
		Condition	Unit	ZTA
Material		-	-	Al2O3/ZrO2
Colour		-	-	White
Bulk density		-	^g/cm3	4
Surface roughness Ra		-	µm	0.2
Reflectance		0.3-0.4 mmt	%	80
Reflectance		0.8-1.0 mmt	%	90
Mechanical	Bending strength	3‑point method	MPa	700
	Elastic modulus	-	GPa	310
	Vickers hardness	-	GPa	15
	Fracture toughness	IF method	^MPa-m1/2	3.5
Thermal	Thermal expansion coefficient	40-400°C	^10-6/K	7.1
	Thermal expansion coefficient	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	>1 014
	Dielectric strength	DC	kV/mm	>15

Performance of Al2O3, ZTA and YTZ

Item	Unit	Alumina (AL2O3)				Zirconium dioxide (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 operating temperature	°C	1500	1500	1500	1500	1400~1500	1500
Linear expansion coefficient	×10-6/°C	7.5	8.2	8.2	8.2
Dielectric constant, εr (20°C, 1MHz)		9	9.2	9.2	9.2
Dielectric loss	tanδ×10-4, 1MHz	3	2	2	2
Volume resistivity	Ω-cm (20°C)	1 013	1 014	1 014	1 014	1 013	1 014
Dielectric 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
Compressive strength	MPa≥	2 500	2 500	2 500	2 800	2 300~2 900	2 500
Bending strength	MPa≥	200	350	350	350
Elastic modulus	GPa	300	350	350	350
Poisson's ratio		0.2	0.22	0.22	0.22
Thermal conductivity coefficient	W/m-K (20°C)	20	25	25	25

Applications of Zirconium Dioxide-Hardened Aluminium Oxide (ZTA) Ceramic Rods

Ceramic rods made from zirconium dioxide–hardened aluminium oxide (ZTA) are utilised across various sectors. They are used in mechanical engineering as wear components in pumps, seals, bearings and cutting tools for machining applications. In the medical field, ZTA is employed for surgical instruments given its biocompatibility and corrosion resistance. The semiconductor industry uses ZTA during wafer processing, given its thermal stability and measured mechanical properties. In chemical processing, ZTA is selected for reactor components because of its resistance to corrosion and aggressive chemicals. In aerospace, automotive and energy sectors, ZTA is applied in engine components and gas turbines where its strength, thermal stability and wear resistance are required. Furthermore, ZTA is used in consumer products such as sports equipment due to its durability and low weight. Overall, ceramic rods from zirconium dioxide–hardened aluminium oxide deliver consistent performance and operational lifetime in critical technical components.

Packaging for Zirconia Toughened Alumina (ZTA) Ceramic Rods

Our ZTA rods are externally labelled and marked to enable efficient identification and quality control. The products are wrapped in plastic foam for impact protection and are finally packed in wooden crates. Care is taken during storage and transportation to ensure no damage occurs.

packing-disc

Frequently Asked Questions (FAQ)

Can ZTA ceramic rods be customised for specific applications?

Yes, ZTA ceramic rods can be customised in terms of composition, microstructure, dimensions, tolerances, surface finish and other properties to meet the specific requirements of various applications.

How are ZTA ceramic rods handled and processed?

ZTA ceramic rods should be handled with care to prevent damage, particularly during transport, storage and machining. For shaping and final processing, diamond tools or abrasive grinding methods are frequently employed.

Are ZTA ceramic rods suitable for high temperature applications?

Yes, ZTA ceramic rods exhibit thermal stability and can withstand high temperatures, thereby making them suitable for use in high‑temperature environments.

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