ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Improved corrosion resistance of carbon fiber reinforced aluminum (Cf/Al) matrixcomposites can be achieved by applying appropriate coatings, and the electroless platingnickel-phosphor (Ni-P) coatings on the Cf/Al composites was provided in this paper. It has beenfounded that the pretreatment with zinc dipping solution for the electroless plating Ni-P can beapproved perfect coatings on the Cf/Al composites. The EDS lines scanning results that the lengthof Ni-P coating is about 12 +m. In zinc dipping bath, matrix Al alloy surface could catch hold ofaction points for depositing Ni-P with substitution reaction, however, carbon fibers surface onlyhave adsorption action points from zinc dipping bath, then, Ni-P alloys could deposit on the Alsurface or carbon fibers. The uncoated and coated composites samples immersed in 3.5 wt % NaClsolution to contrast. The pitting corrosion behavior of the uncoated composites destroyed materials,therefore, the coated sample appeared pitting only on the surface. The corrosion resistancemechanisms of Ni-P coatings came from inhabiting the formation of the classical galvanic corrosion,additionally, the Ni-P coating was amorphous structure, there was not grains boundary which issensitive for the corrosion reaction, so the corrosion resistant of Cf/Al composites were improved
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.353-358.1675.pdf
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