Çarpan jet elektrot kullanilarak üretilen elektrolitik Nİ kaplamalarda mikroyapinin gelişimi.

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Arzutuğ M. E.

JOURNAL OF QAFQAZ UNIVERSITY- CHEMISTRY AND BIOLOGY, cilt.1, sa.1, ss.14-22, 2013 (Hakemli Dergi)

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 1 Sayı: 1
  • Basım Tarihi: 2013
  • Dergi Adı: JOURNAL OF QAFQAZ UNIVERSITY- CHEMISTRY AND BIOLOGY
  • Derginin Tarandığı İndeksler: Other Indexes
  • Sayfa Sayıları: ss.14-22
  • Atatürk Üniversitesi Adresli: Evet

Özet

In this study, theimpinging jet cell in whichnickelWattplatingsolutionrecirculatinghas beenused as an experimental

set-up. Intheimpinging jet cell, highspeedjet flow, which is blowedoutfromnozzle, hasbeenimpingedontocathodesurface at

constanttemperetureconditions. Andso, nickelelectroplating has beenachieved. Impinging jet electrode (IJE) techniqueis

one of theconvectivemass transfer techniques.Inthisstudy, IJE technique hasbeenusedbecause of highspeedelectro

platingadvantageandpreferredtoconventionalelectroplatingtechnique. Jet velocity (Vj) anddimensionlessanode-ca

thodedistance (H/d) havebeenchoosed as experimentalparametersandtheeffects of theseparameters on microstructure

of Nidepositsandsurfaceroughnesshavebeenexamined.Inthebeginning of experimentalstudy, thecathodelimiting

currentdensityvalueshavebeenachievedfordifferentvalues of Vjand (H/d). Andthen, Nickelelectroplating hasbeenach

ievedat a constantpotentialvaluecorrespondingtotheselimitingcurrentdensityvalues. Accordingtotheexperimentalresults,

thecathodecurrentdensityincreasesbyincreasingVj, correspondinglythegrainsizes of Nidepositsbecomesmallerand

surfaceroughness of Nidepositsdecreases.Ithas beendeterminedthat, cathodecurrentdensitydecreasesbyincreasing

(H/d), andcorrespondinglythegrainsizesof Nidepositsbecomelarger. Therefore, thesurfaceroughness of Nideposit

has beenincreasedbyincreasing (H/d).