Effe ct of org anic additives in el ectroless Ni-P and Ni-P-Al۲ O۳ composite coatings

Ni-P electroless is one of the most important surface engineering te chnologies,which applied to industrial fields. S tudies sho w that sub micrometer and nanoparticles areable to modify the crystalline growth of the growing nickel films and create dispersion harding effects at low incorporation le vels. The idea of codepositing various second phase par ticles in electroless nickel deposits and thereby taking a dvantage of their in herent uniformity, hardena bility, we ar resistanc e and corrosion resistance, ha s led to th e development of electroless nickel composite c oatings. In this study, the effect o f some organic additi ves such as glucose and st arch on mo rphology and hardness and also corrosion resistance of Ni-P coating matrix have been investigated and a com parisons b etween Ni-P and Ni-P-Al۲O۳ coatings has been done[۱-۳].

کلیدواژه ها:

Electr oless Ni-P ، Corrosion r esistance ، organic additives ، alum ina