Ube Industries, Inc.

Hidekuni Hayashi

Toshihiro Ishikawa

Hiroyuki Yamaoka

Shinji Kajii

Yoshikatu Harada

Yoshikatsu Harada

There are provided a high-strength zirconia-containing inorganic fiber having excellent alkali resistance, oxidation resistance, catalyst function and/or catalyst-carrying function and a process for the production thereof. The zirconia-containing inorganic fiber is a fiber which is formed of a composite oxide phase comprising a first phase mainly formed of a silica component or silicon carbide and a second phase formed of zirconia, and it is characterized in that the ratio of Zr slopingly increases toward the surface layer of the fiber.

Zirconia-containing inorganic fiber and process for the production thereof

A silica-group composite oxide fiber formed of a composite oxide phase of an oxide phase (first phase) mainly made of a silica component and a metal oxide phase (second phase) excluding silica, in which the existent ratio of at least one metal element of a metal oxide constituting the second phase upward slopingly increases toward the surface layer of the fiber and a process for the production thereof.

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Ube, Japan

Hidekuni Hayashi