十二胺对原子力显微镜探针刮擦加速铜镍合金表面溶解作用的影响

研究了在0.2 mol/L NaCl以及0.01 mol/L HCl介质中AFM探针与铜镍合金表面之间的持续相互作用力对铜镍合金表面溶解行为的影响，结果表明，针尖的刮擦可以加速该合金表面的溶解；作为有机缓蚀剂加入溶液中的十二胺可以吸附于合金表面形成吸附膜，使针尖在界面作用时的能量分布发生改变，从而抑制了铜镍合金的加速溶解.

INFLUENCE OF DODECYLAMINE ON ACCELERATED DISSOLUTION OF COPPER - NICKEL ALLOY INITIATED BY AFM TIP- SURFACE INTERACTION

The influence of continuous interaction between AFM tip and surface of copper-nickel alloy on its dissolution behavior has been investigated. The results showed that the tip scratching could accelerate the dissolution of copper-nickel alloy in 0.2 mol/L NaCl and 0.01 mol/L HCl solutions. As an organic inhibitor, the addition of dodecylamine in the solution may facilitate the formation of adsorption films on the metal surface. As a result, the energy dissipation and conversion at the interface during the scratching course had been altered and the accelerated dissolution of copper-nickel induced by tip scratching was suppressed.