Metal Finishing Guide Book

2013

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Figure 10: FIB cross section of black passivated zinc–nickel with the final formulation of the trivalent chromium post-dip solution (Tridur Finish 300 10% v/v, pH 5.5, 45¡C). Figure 11: SEM micrograph of black passivated Zn/ Ni alloy (Tridur ZnNi H1) without any further posttreatment. Figure 12: SEM micrograph of black passivated Zn/Ni alloy (Tridur ZnNi H1) with post-dip applied (Tridur Finish 300, 5% v/v, pH 5.5, 45¡C, drying temperature of 80¡C). 336 Figure 13: SEM micrograph of black passivated Zn/Ni alloy (Tridur ZnNi H1) with post-dip applied (Tridur Finish 300, 10% v/v, pH 5.5, 45¡C, drying temperature of 80¡C). Figure 14: SEM micrograph of black passivated Zn/Ni alloy (Tridur ZnNi H1) with post-dip applied (Tridur Finish 300, 20% v/v, pH 5.5, 45¡C, drying temperature of 80¡C). Figure 15: SEM micrograph of black passivated Zn/Ni alloy (Tridur ZnNi H1) with post-dip applied (Tridur Finish 300, 30% v/v, pH 5.5, 45¡C, drying temperature of 80¡C).

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