POWDER FEED COMPOSITION FOR FORMING HIGH MELTING POINT OXIDE THERMAL SHOCK RESISTANT COATING, PROCESS AND ARTICLE

Title:

POWDER FEED COMPOSITION FOR FORMING HIGH MELTING POINT OXIDE THERMAL SHOCK RESISTANT COATING, PROCESS AND ARTICLE

Document Type and Number:

Japanese Patent JPH0718405

Kind Code:

A

Abstract:

PURPOSE: To form high m.p. oxide coating having thermal shock wear and spalling resistances.

CONSTITUTION: Thermal spraying powder feed compsn. contg. the particles of zirconia silicate in a mixed state with the particles of zirconia stabilized by the oxide of CaO, Y2O3, MgO, CeO2, and HfO2 is thermally-sprayed on a base material by plasma or with an explosion gun or the like to form a coating compsn. contg. ZrO2.x {(x) denotes one kind of oxide for stabilization}, ZrSiO4 and SiO2. It is preferable that an undercoat of a ceramic-metal alloy is adhered to the metallic base material before the thermal spraying. It preferably contains at least 40 wt.% stabilized zirconia and ≤60 wt.% zirconium silicate. It is effective as coating for a hearth roll for continuously annealing steels.

Inventors:

NITTA HIDEO
HARORUDO HARUHISA FUKUBAYASHI
AMANO MASAHIKO
NAKAMURA YUKIHIRO
ONO KEIICHIRO

Application Number:

JP29035691A

Publication Date:

January 20, 1995

Filing Date:

October 11, 1991

Export Citation:

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Assignee:

UNION CARBIDE COATINGS SERVICE
NIPPON STEEL CORP

International Classes:

C23C4/10; (IPC1-7): C23C4/10

Domestic Patent References:

JPS62142789A	1987-06-26
JPS60194056A	1985-10-02

Attorney, Agent or Firm:

Motohiro Kurauchi (1 outside)

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