Views
14
Bu çalışmada, St37 çelik altlık üzerine elektrokimyasal olarak depolanan nikel-bor (Ni-B) alaşım ana yapılı ve titanyum diborür (TiB2) takviye parçacık destekli kompozit kaplamaların korozyon davranışları saf nikel ve Ni-B alaşım kaplamalar ile mukayese edilerek incelenmiştir. Üretilen kaplamalar Watts tipi geleneksel nikel banyosunda depolanmıştır. Kaplamaların korozyon dayanımlarının belirlenmesinde açık devre potansiyeli (OCP) grafikleri, Tafel ekstrapolasyon ve elektro empedans spektroskopisi (EIS) yöntemleri kullanılmıştır. Elde edilen OCP grafiklerinde kompozit kaplamanın saf nikel ve Ni-B alaşıma göre korozyon potansiyeli açısından daha pozitif tarafta olduğu görülmektedir. Tafel sonuçlarında ise kompozit kaplamanın korozyon dirençlerinde saf nikele göre %84, Ni-B alaşımına göre ise %87 civarlarında bir iyileşme olduğu belirlenmiştir. EIS sonuçlarında da Tafel sonuçlarında olduğu gibi korozyon dayanımında ciddi bir gelişme olduğu görülmüştür. Elde edilen verilere göre, kompozit kaplamanın korozyon direnç değerlerinin saf nikel ve Ni-B alaşımına kıyasla yaklaşık 4 kat daha iyi olduğu belirlenmiştir.
In this study, the chemically stored nikel-bor (Ni-B) alloy on the St37 steel substrate was studied by comparing the corrosion behavior of composite coatings with the main made and titanium diboride (TiB2) additive particles with pure nikel and Ni-B alloy coatings. Produced coatings are stored in the Watts type traditional nickel bath. For the determination of the corrosion resistance of the coatings, open circuit potential (OCP) graphics, table extrapolation and electro empedance spectroscopy (EIS) methods have been used. In the obtained OCP charts, the composite coating is more positive in terms of corrosion potential compared to the pure nickel and Ni-B receipt. In the table results, the compound coating improved by around 84% compared to pure niche in corrosion resistance, and by around 87% compared to Ni-B alloy. The results of the EIS also showed a serious improvement in corrosion resistance as well as in the Tafel results. According to the obtained data, the corrosion resistance values of the composite coating were
In this study, the corrosion behavior of nickel boride (Ni-B) alloy main structure and titanium diboride (TiB2) reinforced particle supported composite coatings deposited electrochemically on a St37 steel substrate was compared with pure nickel and Ni-B alloy coatings. The coatings produced were stored in a Watts-type conventional nickel bath. Open circuit potential (OCP) graphs, Tafel extrapolation and electro impedance spectroscopy (EIS) methods were used to determine corrosion resistances. In the OCP graphs obtained, it was seen that the composite coating was on the positive side in terms of corrosion potential compared to pure nickel and Ni-B alloy. In the Tafel results, it was determined that the corrosion resistance of the composite coating increased by %84 compared to pure nickel and %87 compared to the Ni-B alloy. EIS results showed a serious improvement in corrosion resistance as in Tafel results. According to the data obtained, it was understood that the corrosion resistance values of the composite coating were approximately 4 times better than pure nickel and Ni-B alloy.
Field : Mühendislik
Journal Type : Ulusal
Article Detail 
Similar Articles
Download PDF
Journal Information
Listen Paper
Cite
Print This Page
Share
Mendeley
