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Vol.60, No.2, 95 ~ 102, 2022
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| Title |
| Effect of Nickel Silicide Content on the Friction Properties of Wet Sintered Friction Material |
| 박태형 Tae-hyung Park , 김상욱 Sang-wook Kim , 김종균 Jong-kyun Kim , 현승균 Soong-keun Hyun |
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| Abstract |
| The effect of nickel silicide on the friction properties of Cu-based wet sintered friction materials was investigated. The microstructure and mechanical properties of nickel silicide added Cu-based wet sintered friction materials were examined. Nickel silicide was prepared by mechanically alloying Ni and Si powder. Three types of Cu-based wet sintered friction materials with different nickel silicide contents (0 wt%, 5 wt%, 10 wt%) were fabricated by the powder metallurgy route. The phase transformation of Ni2Si to Ni31Si12 was observed in nickel silicide after a sintering process. The friction coefficient and wear rate decreased with increasing nickel silicide content. The wear scar changed from ploughing to micro-cutting with increasing nickel silicide content. As a result, it is suggested that nickel silicide can be used as a friction modifier when added to Cu-based wet sintered friction materials.
(Received June 17, 2021; Accepted November 22, 2021) |
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| Key Words |
| wet sintered friction material, nickel silicide, hardness, friction coefficient, wear rate |
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