期刊
TRANSACTIONS OF THE INSTITUTE OF METAL FINISHING
卷 91, 期 2, 页码 101-106出版社
MANEY PUBLISHING
DOI: 10.1179/0020296712Z.00000000087
关键词
Ni-W-P; Electroless plating; Heat treatment; XRD; Microstructure; Corrosion
资金
- Shandong Provincial Natural Science Foundation [ZR2011EMM014]
- EPSRC [EP/H020047/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/H020047/1] Funding Source: researchfish
An investigation has been undertaken of the influence of the mixed nanocrystalline and amorphous microstructure on the corrosion behaviour of electroless Ni-5.5W-6.5P (wt-%) deposits on steel substrates. The effects of annealing temperature on microstructure evolution were investigated. The corrosion behaviour of the deposits was evaluated by potentiodynamic polarisation in 0.5M H2SO4 solution and EIS measurements in 3.5%NaCl solution. Relationships between the microstructure and corrosion mechanisms of the as plated and the annealed deposits were considered by reference to microstructural information, including degree of crystallisation, grain sizes of both nickel and Ni3P phases, porosity development, microstrains and residual stresses.
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