Effect of electroless Ni-P plating on the fatigue strength of aluminum.

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  • アルミニウムの疲労強度に及ぼす無電解Ｎｉ‐Ｐめっきの影響
  • アルミニウム ノ ヒロウ キョウド ニ オヨボス ムデンカイ Ni P メッキ

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Abstract

Effect of electroless Ni-P plating on the plane bending fatigue strength and crack propagation for an aluminum and an aluminum casting alloy (AC2B) was investigated using a uni-bending fatigue test machine at a cycle of 30Hz. Electroless Ni-P plating of the 20μm deposited film in thickness results in about 20 to 30% improvement of fatigue strength for an aluminum and the heat-treated AC2B casting alloy. An electroless Ni-P amorphous film has an effect to delay the nucleation of fatigue cracks and improve the fatigue strength.

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