Praxair S.t. Technology, Inc.

Hideo Nitta

John E Jackson

Katoh Shoichi

Keiichiro Ohno

Masahiko Amano

Yasushi Kurisu

Shoichi Katoh

John C Wood

Mamoru Hisada

Satoshi Sasaki

A sealing material having excellent resistance to attack by molten metals, such as molten zinc, comprising aluminum phosphate/silicon dioxide-based material. The invention also relates to a method for coating articles with such sealing material.

Aluminum phosphate/silicon dioxide-based sealing material

A process of providing a thermal spray powder feed coating composition composed of stabilized zirconia mixed with zircon and a selected oxide, such as yttria, to form a refractory oxide coating ideally suited for hearth rolls for annealing steel.

Hearth roll

An alloy of 3 to 9 weight percent boron with the balance molybdenum for use as a thermal spray coating for articles intended to be exposed to molten zinc.

Molten zinc resistant alloy and its manufacturing method

A thermal spray powder feed coating composition composed of stabilized zirconia mixed with zircon and a selected oxide, such as yttria, to form a refractory oxide coating ideally suited for hearth rolls for annealing steel. Process for producing the coating and the coated article so produced is also disclosed.

Process for forming a refractory oxide coating

A thermal spray powder feed coating composition composed of stabilized zirconia mixed with zircon and a selected oxide, such as yttria, to form a refractory oxide coating ideally suited for hearth rolls for annealing steel Process for producing the coating and the coated article so produced is also disclosed.

Powder feed composition for forming a refraction oxide coating, process

A water-cooled roll for cooling steel sheets is spray-coated on the surface that comes in contact with the steel sheets with a cermet composed of a metal oxide having a higher hardness and lower thermal conductivity than metals and a metal matrix of Ni- or Co-base heat-resisting alloy. The metal oxide is chosen from among Al.sub.2 O.sub.3, Cr.sub.2 O.sub.3, SiO.sub.2, and ZrO.sub.2, and the metal matrix consists of an MCrAlY (M=Co or Ni). Preferably, the metal oxide is alumina and the metal matrix, CoCrAlYTa.

Growing community of inventors

Higashi-Matsumaya, Japan

Hideo Nitta