【摘要】 利用化学镀技术 ,制备了非晶态Ni P合金基纳米Al2 O3复合镀层 ,研究了纳米Al2 O3微粒的加入量、加入方式以及搅拌方式等对复合镀层组织和形貌的影响。结果表明 ,纳米Al2 O3在加入到镀液中以前 ,应先选用适当的表面活性剂和分散介质制成单分散添加液 ,然后再加到镀槽中才可保证纳米粒子在镀层中的均匀弥散分布 ,在超声振动搅拌方式下 ,镀液中只需加入 1g L纳米Al2 O3,即可得到颗粒细小、分散均匀的非晶态Ni P合金基纳米Al2 O3的复合镀层更多还原

【Abstract】 The composite coatings of amorphous Ni-P alloy with nano-Al 2O 3 particles were prepared by electroless-deposition. Effects of quantities, adding-ways and pretreating-ways of Al 2O 3 on the surface features and microstructures of composite coatings were studied. Results show that the nano-Al 2O 3 particles must be treated into mono-dispersing suspension liquid with the aid of proper surfactant and dispersant before adding into the electroless solution, and in this way the particulates of Al\-2O\-3 can be distributed dispersedly and uniformly. A composite coating of Ni-P amorphous alloy with tiny Al\-2O\-3 particles dispersed uniformly can be obtained by adding 1g/L of nano-Al\-2O\-3 into the electroless solution under the condition of ultrasonic stirring.更多还原