(1) "A metal is passive if it substantially resists corrosion in a given environment resulting from marked anodic polarization
Electrochemical transformations of [Fe.sub.3][O.sub.4] nanoparticles, carbon-coated nanoparticles, and iron nanoparticles coated with a layer of carbon and diazonium salts from the surface of the CPE under its cathodic and anodic polarization
have been studied.
Cyclic anodic polarization
curves of A35, A36, C-276, and SS316 alloys are shown in Figure 7.
At the beginning of the experiment, the slope of cathodic polarization curve was larger than that of anodic polarization
The electrochemical corrosion of amalgams with additions can be conveniently described by the schematic current--potential curves (The polarization curves) are shown in Figures (8-14) which illustrate cathodic and anodic polarization
curves of the amalgams in synthetic saliva solution.
Sample PC also displayed a low rate of anodic current density rise, and resistance to high anodic polarization
. The coating was observed to be intact following the polarization run, with no visual sign of damage.
The cathodic and anodic polarization
curves for TNTA and Zn incorporated TNTA in Hank's solution were recorded at a sweep rate of 1 mV [s.sup.-1].
Figure 5 shows the anodic polarization
curves for the AA6061 with and without the composite coating in a naturally aerated 3.5% NaCl solution.
. A 1mol/[dm.sup.3] solution of hydrazine monohydrate ([N.sub.2][H.sub.4]-[H.sub.2]O; 50.06 MW) was dissolved in 200 [dm.sup.3] distilled water, and 0.2 M sodium citrate dihydrate ([Na.sub.3][C.sub.6][H.sub.5][O.sub.7]*2[H.sub.2]O) was added to the solution.
They have been firstly degreased in an electrolytic degreasing bath (NaOH 30 g [L.sup.-1], [Na.sub.3]P[O.sub.4] 39.5 g[L.sup.-1], [Na.sub.2] C[O.sub.3] 30 g L-1, anionic surfactant 0.5 g [L.sup.-1], T = 60 + 90[degrees]C, and 6 A [dm.sup.-2] for 3 minutes in cathodic polarization and then for 1 minute in anodic polarization
Ayerst, "Anodic polarization
and corrosion of WC-Co hardmetals containing small amounts of Cr3C2 and/or VC," Journal of Materials Science, vol.