Novel hybrid sacrificial anodes based on high phosphorus pig iron and Zn | Health & Environmental Research Online (HERO)

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HERO ID

8906104

Reference Type

Journal Article

Title

Novel hybrid sacrificial anodes based on high phosphorus pig iron and Zn

Author(s)

Prasad, NK

Year

2021

Is Peer Reviewed?

Yes

Journal

Corrosion Science
ISSN: 0010-938X
EISSN: 1879-0496

Volume

189

Page Numbers

109616

Language

English

DOI

10.1016/j.corsci.2021.109616

Web of Science Id

WOS:000677546700002

URL

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85109027570&doi=10.1016%2fj.corsci.2021.109616&partnerID=40&md5=5f7215127b8a8dd71e5c13fc0c97cf36
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Abstract

A series of novel hybrid anodes consisting of high phosphorus pig iron and Zn with stoichiometry of xP-yZn (x = 1.5, 3.5, 8.0 wt%P and y = 10, 20, 30 wt%Zn) shows more negative potential below the protective potential of mild steel (- 0.778 V vs. saturated calomel electrode) in seawater, suggesting their effectiveness as sacrificial anodes. The anodic performance of the hybrid anodes is surprisingly comparable to the commercial Zn-anode with anode capacity and efficiency greater than 760 Ah/Kg and 80 %, respectively. The localized segregation of Zn and large cathode-to-anode area-ratio in the microstructure attribute to the active behavior of the hybrid anodes.

Keywords

Corrosion; Hybrid sacrificial anode; Cathodic protection; Anode capacity