Glass substrate for a magnetic disk, a magnetic disk which can be formed with a stable texture
A glass substrate for a magnetic disk contains a transition metal. The substrate, which is subjected to formation of zone texturing by irradiating the substrate with a laser beam, has a high mechanical strength even if it is not chemical...
H Yamamoto，T Namekawa，T Naito，... - US
Sintered alumina-based ceramic and sintered alumina-based ceramic part
ofA sintered alumina-based ceramic has a relative density of equal to or higher than 95%, an average grain size in a range of 10 - 25 mu m and a fracture t...
Tomonori C/O Ngk Spark Plug Co. Ltd. Niwa - EP
A GLASS SUBSTRATE OF DISK FOR RECORDING INFORMATION, A DISK FOR RECORDING INFORMATION, AND A DISK DEVICE FOR RECORDING INFORMATION
THE INVENTION RELATES TO A METHOD FOR CONTINUOUSLY CASTING THIN METAL PRODUCTS, THE METHOD COMPRISING THE OPERATIONS OF PRE-HEATING A PAIR OF REFRACTORY PL...
N Takeo，H Yamamoto，M Watanabe，...
Glass substrate of disk for recording information, a disk for recording information, and a disk device for recording information
In accordance with the present invention, a glass substrate of a disk for recording information, containing oxides of rare earth elements and fine particles dispersed therein, and a disk for recording information and a disk apparatus for...
H Yamamoto，T Naito，T Namekawa，... - US
Plasma-resistant member and plasma treatment apparatus using the same
A plasma-resistant member used in a reaction chamber of a plasma treating apparatus is formed of a dense alumina sintered product having an average grain size of 18-45 &mgr;m, a surface roughness Ra of 0.8-3.0 &mgr;m and a bulk density o...
A Miyazaki，K Morita，S Nagasaka，... - US
Plasma-resistant member and plasma treatment apparatus using the same
A plasma-resistant member for use in a reaction chamber of an apparatus for plasma treatment, which is made from alumina sintered compact having a mean crystal grain diameter of 18 to 45 νm, a surface roughness in terms of Ra of 0.8 to ...
A Miyazaki，K Morita，S Nagasaka，... - EP
Casting mold
A ceramic core that includes, prior to core sintering, erbia filler material alone or admixed with a second ceramic filler material, such as alumina, and a...
ES Lassow，DL Squier，JA Faison - US
Glass substrate for a magnetic disk, a magnetic disk which can be formed with a stable texture and a magnetic disk device
A glass substrate for a magnetic disk contains a transition metal. The substrate, which is subjected to formation of zone texturing by irradiating the substrate with a laser beam, has a high mechanical strength even if it is not chemical...
H Yamamoto，T Namekawa，T Naito，... - US
Erbia-bearing core
A ceramic core that includes, prior to core sintering, erbia filler material alone or admixed with a second ceramic filler material, such as alumina, and a binder to provide a core that is relatively non- reactive with superalloys used i...
ES Lassow，DL Squier，Julie A. Faison
Erbia-bearing core
A ceramic core that includes, prior to core sintering, erbia filler material alone or admixed with a second ceramic filler material, such as alumina, and a binder to provide a core that is relatively non-reactive with superalloys used in...
ES Lassow，DL Squier，JA Faison
