Patent CH-703264-A2 (CH)
Title: Manufacturing a first piece comprising a coating, comprises producing a second piece comprising a recess forming the first part, and depositing the coating comprising a first layer on the second piece by e.g. chemical vapor deposition
Inventor: WINKLER YVES
IPC: C23C26/00
Filed: 2010-06-08
Abstract: The process of manufacturing a first piece (5) having a side formed of a first material and comprising a coating (3) on the side, comprises producing a second piece (1) comprising a recess forming the first part, depositing the coating comprising a first layer on the second piece by chemical vapor deposition, physical vapor deposition or electro-deposition, producing a first totally amorphous metallic material, and forming the first material in the recess of the second piece to allow the adherence of the coating to one side of the first piece. The process of manufacturing a first piece (5) having a side formed of a first material and comprising a coating (3) on the side, comprises producing a second piece (1) comprising a recess forming the first part, depositing the coating comprising a first layer on the second piece by chemical vapor deposition, physical vapor deposition or electro-deposition, producing a first totally amorphous metallic material, forming the first material in the recess of the second piece to allow the adherence of the coating to one side of the first piece, and separating the first piece from the second piece to form a first coated piece. The first material is subjected to rise in temperature above its melting temperature to lose any local crystal structure, and then cooled to a temperature below its glass transition temperature to the first material to become amorphous. The recess is subjected to a temperature between the glass transition temperature and crystallization temperature of the first material, and then cooled to make the first material partially amorphous under pressure. The recess undergoes simultaneous treatment with the first partial amorphous material by subjecting it to a temperature above its melting temperature and by cooling to a temperature below its glass transition temperature to become partial amorphous during a casting operation. An attachment unit is arranged on the coating to improve the adhesion between the lining and the first part, and comprises a hollow pattern or projection arranged on the coating. The pattern is produced by varying the deposition of the coating, or machining the coating. The coating comprises a second layer, where the coating layer closest to the first part is used as an intermediate layer between the coating and the first part. The attachment unit comprises an intermediate unit arranged between the coating layers of the first and second layers. The intermediate layer has a chemical affinity with the first material and the coating layer closest to the first piece, or with the first material and the coating layer on which the intermediate layer is deposited to accelerate the process of inter-diffusion of atoms thus improving the adhesion of the coating to the first piece. The intermediate layer is fused to the solder layer of the coating closest to the first part or the coating layer on which the intermediate layer is deposited with the first piece. The separation of the first part from the second piece is carried out by crystallizing the first piece to speed up the inter-diffusion between the atoms of the coating and the first material. The first part further comprises another coating, where the coating is deposited on different surfaces of the first piece.