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PRODUCTS & SERVICES

Advanced Ceramics - Zirconia

Zirconia is a unique advanced ceramic - a chemical compound having the formula ZrO2. 

Products manufactured from Tosoh's yttria-stabilized zirconia (YSZ) powder exhibit superior mechanical properties such as high strength and flexibility. As a technological breakthrough, YSZ surpasses the strength limitations of traditional fine ceramics. Heat insulating properties and oxygen-ion conductivity indicate zirconia has potential for use in a wide variety of applications - everything from telecommunications to the new energy of the future and environmentally beneficial products.

A business unit within its Specialty Materials Division, Tosoh Corporation’s zirconia powder production capacity ranks as the world’s largest. 

Tosoh’s TZ Series of yttria stabilized zirconia powders is well known for its consistency and high quality. Zirconia injection molding compounds, injection molded components and YTZ® Grinding Media complete the basic product offering. 

Tosoh also offers zirconia compounds for injection molding (using its TZ-3Y-E zirconia powder), developed based on our proven experience in manufacturing zirconia injection components (ferrule blanks).

For more information please browse the tabs below, or, contact Tosoh USA, Inc. to inquire on grades that you require for your needs but may not be listed below. Please note that not all grades listed here may be available to your region. Please inquire via our Contact Form or get in touch with us by phone or email.

Tosoh Zirconia Powders

Legend for Grade Names

< Example >
TZ
-
3Y
-
S
- 20A B
-
E

I

II
  III
 IV   V

I: mol % of yttria, where "3Y" would be 3 mol% Y2O3 
II:
"S" for easy moldability grades 
III:
ATZ grades, where "20A" would be 20 wt% alumina
 IV:  binder grades, where "B" would be binder 3% grades, and "BC" would be binder 5% grades
 V:  "E" for easy sintering grades
 
TZ-3Y-E, TZ-3YB-E

Partially-stabilized zirconia powder with uniform dispersion of 3 mol % yttria. TZ-37-E exhibits superior sintering properties and higher aging resistance at a lower sintering temperature of 1300ºC. Sintered bodies produced with TZ-37-E show a fine crystal grain structure resulting in greater improvements in strength, fracture toughness, as well as resistance to wear and aging. TZ-37-E has numerous applications including materials for industrial parts and everyday products.

POWDER CHARACTERISTICS TZ-3Y-E, TZ-3YB-E
Y2O3 (mol%)  3
Actual Partical Size (µm)
 0.04 (40nm)
Y2O3 (wt%) 5.2 ± 0.5
HfO2 (wt %)
< 5.0
Al2O3 (wt %) 0.1 ~ 0.4
SiO2 (wt %) ≦ 0.02
Fe2O3 (wt %) ≦ 0.01
Na2O (wt %) ≦ 0.04
Pigment (wt %) -
Specific Surface Area (m2/g)  16 ± 3
   
TYPICAL PROPERTIES OF SINTERED BODY 
Density (g/cm3 6.05
Bending Strength R.T. (MPa)*1  1,200 
Hardness (Hv 10)*2  1,250 

*1: JIS R1601 (3-point bending test) 
*2: JIS R1610 (loads: 98.07N)
*Above is typical data and not guaranteed

 
TZ-3YS-E, TZ-3YSB-E, TZ-3YSB-C

S grades have a smaller surface area that contributes to a smooth flow for the compound or slurry in injection molding, tape casting, and other molding methods. S grades are highly recommended for producing large parts by a mechanical press or CIP.

POWDER CHARACTERISTICS TZ-3YS-E, TZ-3YSB-E, TZ-3YSB-C
Y2O3 (mol%) 
Actual Partical Size (µm)
 0.09 (90nm)
Y2O3 (wt%) 5.2 ± 0.5
HfO2 (wt %)
< 5.
Al2O3 (wt %) ≦ 0.1 ~ 0.4
SiO2 (wt %) ≦ 0.02
Fe2O3 (wt %) ≦ 0.01
Na2O (wt %) ≦ 0.06
Pigment (wt %) -
Specific Surface Area (m2/g)  7 ± 2
   
TYPICAL PROPERTIES OF SINTERED BODY 
Density (g/cm3 6.05
Bending Strength R.T. (MPa)*1  1,200 
Hardness (Hv 10)*2  1,250 

*1: JIS R1601 (3-point bending test) 
*2: JIS R1610 (loads: 98.07N)
*Above is typical data and not guaranteed

 
Zpex® & Zpex® Smile

Dental restorations with the natural look and feel of real teeth can be produced with Zpex.


High all light transmittance in addition to superior hydrothermal aging resistance.

Translucency

Zpex zirconia powder translucency

Aging Property (140ºC in water x 25 hr)

Zpex zirconia powder aging propert



High all light transmittance by improving the aggregation of particles

 Zpex zirconia powder aggregation of particles


Ziconia Dental Bridge comparison of Zpex (left) and TZ-3YSB-E. (right)


POWDER CHARACTERISTICS Zpex
Y2O3 (mol%)  3
Actual Partical Size (µm)
 0.04 (40nm)
Y2O3 (wt%) 5.35 ± 0.2
HfO2 (wt %)
< 5.0
Al2O3 (wt %) ≦ 0.1
SiO2 (wt %) ≦ 0.02
Fe2O3 (wt %) ≦ 0.01
Na2O (wt %) ≦ 0.04
Pigment (wt %) -
Specific Surface Area (m2/g)  13 ± 3
   
TYPICAL PROPERTIES OF SINTERED BODY 
Density (g/cm3 6.08
Bending Strength R.T. (MPa)*1  1,100 
Hardness (Hv 10)*2  1,250 

*1: JIS R1601 (3-point bending test) 
*2: JIS R1610 (loads: 98.07N)
*Above is typical data and not guaranteed

 
Tosoh is utilizing powder technologies in the field of the high strength and high fracture toughness zirconia to supply fully stabilized zirconia powder for solid oxide fuel cell (SOFC). 

High-purity Tosoh powder provides sintered bodies which have superior electric properties. 

Tosoh powder has superior sintering properties and provides sintered bodies which have uniform grains.
 
POWDER CHARACTERISTICS  TZ-8Y TZ-8YS
TZ-10YS
Y2O3 (mol%)  8 10 
Specific Surface Area (m2/g)  16±3  7±2 
6±2 
Binder (Approx. wt%)  -
Appearance  Granule  Granule 
Granule 
       
TYPICAL PROPERTIES OF SINTERED BODY  TZ-8Y TZ-8YS TZ-10YS
Density (g/cm3 5.90 5.80 
Bending Strength R.T. (MPa)*1  300
200
Hardness (Hv 10)*2
1,250
Electric Resistance (Ω·cm) at 800ºC*3 19.8 20.3 27.3
Electric Conductivity logσ(S/cm) at 800Cº*3
-1.30  -1.31  -1.44 

*1: JIS R1601 (3-point bending test)
*2: JIS R1610 (Loads: 98.07N)
*3 : 4-terminal method by direct current
*Above is typical data and not guaranteed.

   
ATZ Grades "A"

"A" grades contain uniformly dispersed 3 mol % yttria, 20 wt% alumina, and exhibit extremely high mechanical strength after HIPing. This grade is most commonly used to produce industrial parts in high strength, high water resistance applications.
 
 
POWDER CHARACTERISTICS  TZ-3Y20A
TZ-3Y20AB TZ-3YS20A
TZ-3YS20AB
Y2O3 (mol%)  3
Specific Surface Area (m2/g)  15±3  7±2
Binder (Approx. wt%)  3
-
3
Appearance  Granule  Granule 
         
TYPICAL PROPERTIES OF SINTERED BODY  TZ-3Y20A TZ-3Y20AB TZ-3YS20A TZ-3YS20AB
Density (g/cm3 5.50
Bending Strength R.T. (MPa)*1  2,000
Hardness (Hv 10)*2
1,400

*1: JIS R1601 (3-point bending test) 
*2 : JIS R1610 (Loads: 98.07N)
*Above is typical data and not guaranteed.

Zirconia Grinding & Dispersion Media

 
  • Higher density provides a greater impact force resulting in superior grinding efficiency.
  • Smooth surface, almost perfect roundness/sphericity and narrow size distribution, resulting in higher productivity grinding and dispersion.
  • Produced from high purity materials, has a higher wear resistance which results in minimizing product contamination from media wear.
  • Higher wear resistance results in less frequent media replacement.
  • Provides optimum results when used in wet grinding and dispersing applications, including the processing of highly viscous materials.
  • Resistant to rust and corrosion, and thus compatible with water based processing. 
 
   
Chemical Composition  95% ZrO2, 5% Y2O3 
Specific Density  6.0 g/cm3
Bending Strength  1200MPa
Hardness (Hv10)  1250
Modulus of Elasticity  210GPa
Fracture Toughness  6.0MPam0.5
   

 
BALL (Ø, MM)  
0.03
0.05
0.1
0.2
0.3
0.4
0.5
0.65
0.8
1
1.25
1.5
1.75
2
2.3
2.7
3
5
10
15
20
25
 
Cylinder (inch)
3/8, 1/2 
*For sizes not listed, please contact a Tosoh sales office.  
 


 
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