TORAY | Ceramics Torayceram* Zirconia Powder

	Zirconia Powder
	Powder for Cosmetics

Toray is the first company in the world to have developed the greatly strong and tough zirconia ceramics. And since 1985, we have been producing yttria-stabilized (tetragonal) zirconia superfine powder in which yttria is homogenized, using liquid phase method. We have a wide range of lineup with various grades, depending on the forming methods.

Grade of Powder

		3Yl-M	3Yl-R	3YS	3YB	Measurement Method
Characteristics of Powder	Y₂O₃(mol%)	2.75	2.75	2.75	2.75	-
	Binder	Nothing	Nothing	Nothing	Contained	-
	Specific Surface Area (m²/g)	15±2	9±1	6±1	12±2	BET1Point Method
	Main Applications	Injection Molding Optical Components low-temperature Sintering	Injection Molding	Slip Casting	Die Pressing Molding CIP
	Dispersed Particle Size(D50) (micron)	<0.5	<0.5	<0.8	<0.7
	Bulk Density(g/cm³)	1.0±0.2	1.1±0.2	1.1±0.2	1.1±0.2
Characteristics of Sintered Compact	Hardness(Hv)	1250	1250	1250	1250	JIS-R1601
	Flexural Strength (RT·MPa)	1300	1300	1000	1100	JIS-R1610
	Density(g/cm³)	6.06	6.06	6.00	6.03	Archimedes Method
	Toughness(MPa√m)	6	6	6	6	Ml Method

· For powder with different specific surface area, please contact us separately.

· The values are the actual ones measured by our own evaluation method. Please note that the values may vary depending on the shape of a sintered compact, the way of forming, or the conditions of sintering.

Typical Chemical Composition (3YI-R)

(wt%)

Material	Specification Value	Method of Measurement
Y₂O₃	4.91±0.15	ICP Analysis
Al₂O₃	0.38±0.02	ICP Analysis
Fe₂O₃	0.0010	ICP Analysis
SiO₂	<0.01	ICP Analysis
TiO₂	<0.0015	ICP Analysis
Na₂O	<0.0068	Atomic Absorption Method

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