Lubrication properties of silver-palladium alloy prepared by ion plating method for high temperature stud bolt

As a solid lubricant, silver-palladium （Ag-Pd） alloy coating was investigated for the application to high temperature stud bolt. A glue layer nickel （Ni） film was deposited on the surface of the hex bolt sample and then Ag-Pd alloy coating was performed on it using ion plating method. The friction c...

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Bibliographic Details
Published in:Transactions of Nonferrous Metals Society of China 2011-03, Vol.21 (1), p.12-16
Main Authors: KWON, Jung-Dae, LEE, Sunghun, LEE, Koo-Hyun, RHA, Jong-Joo, NAN, Kee-Seok, KWON, Se-Hun
Format: Article
Language:English
Subjects:
ion plating
silver-palladium alloy
solid lubricant
六角螺栓
合金镀层
固体润滑剂
润滑性能
离子镀
薄膜涂层
银钯合金
高温螺栓
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Summary:As a solid lubricant, silver-palladium （Ag-Pd） alloy coating was investigated for the application to high temperature stud bolt. A glue layer nickel （Ni） film was deposited on the surface of the hex bolt sample and then Ag-Pd alloy coating was performed on it using ion plating method. The friction coefficient of Ag-Pd alloy film coated bolt was lower than that of N-5000 oil coated bolt by the result of axial force measurement. The cyclic test of heat treatment was conducted to evaluate the durability of Ag-Pd alloy film coated bolt. In a cycle, sample was assembled into the block using torque wrench, followed by heating and disassembling. It was not successful to disassemble the N-5000 oil coated bolt from the block after only one cycle. However, the Ag-Pd alloy film coated bolt was able to be disassembled softly till 12 cycles.
ISSN:1003-6326
DOI:10.1016/S1003-6326(11)61052-2