Electrofused zirconium oxide

inquire about

TOP > Others > Electrofused zirconium di oxide

Zirconium oxide resistant to molten steel This is a type of zirconium oxide that, through use of the electrofusion method, has improved corrosion resistance to molten steel.

Electrofused zirconium oxide for industries

Tateho Chemical Industries Co., Ltd. supplies unstabilized ZIRFUSE®FZ-H and partially stabilized ZIRFUSE® FZCA with calcium oxide added as stabilizer.
Manufactured using our own electrofusion technology, our zirconium dioxide ZIRFUSE® is characterized by large crystal grains and excel in corrosion resistance to molten steel.
With low silica content, our zirconium dioxide exhibits less reactivity with electronic parts, and has such applications as floor plates used in sintering electronic parts.
Tateho has a large assortment of products in various grain sizes, large and small, to respond readily to extensive customer requirements.

Features and usages

Features Usages
  • Our zirconium dioxide has a high melting point and resists high temperatures.
  • Our zirconium dioxide exhibits excellent corrosion resistance to molten steel and slag.
  • Our zirconium dioxide reacts less with various electronic parts raw materials.
  • Our zirconium dioxide has low thermal conductivity.
  • Raw materials for refractories used in continuous casting of steel
  • Raw materials for underlay plates used in sintering electronic parts
  • Underlay powder and filler used in sintering electronic parts
  • Raw materials used in thermal spraying
  • Raw materials for electronic parts, such as oxygen sensors


ZrO2 + HfO2 98.91 94.97 73.2
CaO (%) 0.61 4.14 26.0
MgO (%) 0.16 0.16 0.19
SiO2 (%) 0.11 0.40 0.36
Fe2O3 (%) 0.10 0.20 0.19
Al2O3 (%) 0.03 0.03 0.02
TiO2 (%) 0.07 0.09 0.03
Remarks unstabilized zirconia partially stabilized zirconia Calcium zirconate
  • Chemical properties : X-ray fluorescence method

※The properties are the typical values and not guaranteed values.

particle size

Grade ZIRFUSE®FZ-H (For Underlay powder)
Particle size
  • 35 ~ 80 mesh
  • 80 mesh pass
  • 100 ~ 200 mesh
  • 150 ~ 250 mesh
Particle size Grade #40
  • 40 ~ 80 mesh
  • 100 ~ 200 mesh
  • 330 mesh pass



Tateho Chemical Industries Co.,Ltd.

  • Paid-up Capital : JPY 450 Million
  • Number of Employees : Approx.270
  • Establishment : 1966

Received ISO9000, 14000

"Tateho's vision of creating new environment-friendly materials"

Tateho Chemical Industries Co., Ltd. was born in the town of Ako--an area blessed with a warm climate and the abundant marine resources of the Inland Sea of Japan.
The history of the salt industry in Ako is long--dating back nearly 1300 years to the Nara period.
In 1966, Tateho was established as a group of engineers seeking to provide new materials widely useful for society by putting this inherited, time-honored wisdom into full use, and by effectively utilizing bittern, a substance left after separating salt from seawater.
Since then, we have continued to provide the world with highly functional products--including magnesium oxide, magnesium hydroxide, electrofused magnesium oxide, single crystal magnesium oxide, flame retardants, and ceramics--by expanding our businesses on the basis of our proprietary crystallization control technology.
We are committed to contributing to industry worldwide under the slogan of "Aiming to be a development-oriented company friendly to the natural environment and leading the world with proprietary technologies" by continuously adhering to our environmental policy and further improving our proprietary technologies.