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2 482 203

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(51)

IPC

C22C5/04(2006-01-01)

C23C8/64(2006-01-01)

C22F1/14(2006-01-01)

(21) (22)

Application

2011154020/02, 2011-12-28

(24)

Start date

2011-12-28

(22)

Actual filing date

2011-12-28

(45)

Published

2013-05-20

(72)

Inventor

Efimov Valerij NikolaevichPavlov Evgenij AleksandrovichMamonov Sergej Nikolaevich

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Zavod Tsvetnykh Metallov Imeni V.N. Gulidova"

METHOD FOR SURFACE STRENGTHENING OF METAL ITEMS Russian patent published in 2013 - IPC C22C5/04 C23C8/64 C22F1/14

Abstract RU 2482203 C1

FIELD: metallurgy.

SUBSTANCE: items from platinum or platinum-based alloys are exposed to chemical-thermal treatment in environment of carbon-containing material, at the same time chemical-thermal treatment is carried out at the temperature of 1050°C-1400°C.

EFFECT: method makes it possible to provide for surface strengthening of jewellery items from platinum or platinum-based alloys and to increase their wear resistance without reduction in fineness and deterioration of appearance.

2 ex, 4 tbl

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RU 2 482 203 C1

Authors

Efimov Valerij Nikolaevich

Pavlov Evgenij Aleksandrovich

Mamonov Sergej Nikolaevich

Dates

2013-05-20—Published

2011-12-28—Filed