摘要
本研究使用胺基磺酸鎳浴，在一定的溫度及電流密度條件下，電鍍不同厚度的鎳層，探討其對Sn-9Zn 合金材料的抗拉性質及在高溫下抗彎曲變形能力的影響。研究結果顯示，電鍍液會腐蝕Zn，且較薄鍍鎳層在基材表面有初晶Zn 的位置，會有鍍層不連續的現象，失去原本應具有的強化效果，整體抗拉性質較未經電鍍的試片差；較厚鍍鎳層在基材表面初晶Zn 的位置，則會有鍍鎳層厚度較薄的現象發生，但鍍層相對較均勻且其鍍層較厚，其抗拉性質明顯提昇。整體而言，鍍層的缺陷現象隨著鍍層厚度的增加而降低，降伏及抗拉強度隨著鍍層厚度的增加呈上升，伸長率隨著鍍層厚度的增加呈下降趨勢。 在相同之試驗壓力條件下，高溫壓彎之試片彎曲角度顯較常溫壓彎者為大。在高溫試驗條件下，彎曲角度隨著壓彎次數幾呈算數級數增加，而增加荷重對於常溫及高溫彎曲試驗之試片彎曲角度差距有較顯著的影響。對於基材厚度5mm 的鍍鎳試片而言，試片之抗彎性隨著鍍層厚度增加而增加，但鍍層厚度在75µm 以上時，試片之抗彎性已幾近相同，因此鍍層厚度在75µm 左右應可獲致理想的強化效果。
並列摘要
This study investigated the effect of Ni electrodepositing on the tensile properties and bending resistance of Sn-9Zn alloy. The results indicate that the Ni coating layer exhibits interruption or nonuniformity at the primary Zn phase that exposed to the substrate surface. This discontinuity phenomenon decreases gradually as the thickness of plating increases. As a result, the tensile properties of the Ni-electrodeposited Sn-9Zn alloys are also affected. Regarding the bending tests, the results show that the bend angles of the specimens increase with increasing load and loading cycle, with the former being more dominant. The effect of testing temperature was also investigated with the results indicating that temperature exerts a vary significant effect on the Nielectrodeposited Sn-9Zn alloys.