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2 149 917

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Application

95116540/02, 1995-09-21

(24)

Start date

1995-09-21

(22)

Actual filing date

1995-09-21

(45)

Published

2000-05-27

(72)

Inventor

Grachev S.V.Kolpakov A.S.Bushmanov P.V.

(73)

Holder

Ural'Skij Gosudarstvennyj Tekhnicheskij UniversitetTsentr Zashchity I Ispol'Zovanija Ob"Ektov Intellektual'Noj Sobstvennosti, Okhranjaemykh Patentnym Zakonodatel'Stvom

FLUIDIZED BED PROCESS FOR BORON-NICKELIZING OF STEEL OBJECTS Russian patent published in 2000 - IPC

Abstract RU 2149917 C1

FIELD: metal coatings. SUBSTANCE: process involves preliminarily saturation of nickel at 350-500 C during 5 to 30 min and saturation with boron at 600 to 950 C. The former is conducted in composition containing, wt %: nickel oxide 0.02-0.5, boron carbide 5-35, ammonium chloride 0.005-0.2, sodium tetrafluoroborate 0.01-0.1, and corundum - the balance. EFFECT: enabled preparation of high-quality boron-nickel layers 90-120 mcm thick with microhardness 14000 MPa. 1 tbl

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RU 2 149 917 C1

Authors

Grachev S.V.

Kolpakov A.S.

Bushmanov P.V.

Dates

2000-05-27—Published

1995-09-21—Filed

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