METHOD FOR PRODUCING A COMPOSITE COATING

WIPO Patent Application WO/2001/048266

A1

The present invention relates to a method for producing a composite coating. The said method comprises steps of: cleaning the surface of a metal base workpiece; enclosing the workpiece with screen structure such as metal wire gauze, ceramic screen, or sponge foam screen; providing a sufficient space between the workpiece and the screen structure; supplying dispersed particles to the space; closing the inlet for supplying the particles; fixing the screen structure; and forming a composite coating, which consists of the dispersed particles, on the workpiece by hot working process such as hot-dipping brazing or hot spraying. Alternatively, the present invention provides a cast with a composite coating by casting melt metal in a cast mould, the said cast mould has a layer of dispersed particles held by a screen structure. Also, in order to improve the quality of the composite coating, the hot working process may be carried out in vacuum or under a protective atmosphere.

PANG XIUMEI (CN)
TAN HONGJIAN (CN)

PCT/CN2000/000572

July 05, 2001

December 12, 2000

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PANG XIUMEI (CN)
TAN HONGJIAN (CN)

B22D19/08; B22D19/14; B23K1/00; C23C2/02; C23C4/02; C23C6/00; C23C24/08; C23C24/10; C23C26/00; C23C26/02; (IPC1-7): C23C24/08; C23C24/10; C23C2/02; C23C4/10; B23K1/08; B22D19/08; B22D19/14

CN1019094A
CN1124786A	1996-06-19
JPH09174199A	1997-07-08
CN1066013A	1992-11-11
CN1039747A	1990-02-21
JPS60114537A	1985-06-21
JPH10318038A	1998-12-02

CCPIT PATENT AND TRADEMARK LAW OFFICE (2 Fuchengmenwai Street, Beijing 7, CN)

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