Corrosion behavior of Al-Zn-In sacrificial anode alloys produced by conventional casting and semi-solid metal casting processes

Conference proceedings article

ผู้เขียน/บรรณาธิการ

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

ไม่พบข้อมูลที่เกี่ยวข้อง

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Puridetvorakul C., Poolthong N., Tareelap N.

ผู้เผยแพร่: Trans Tech Publications

ปีที่เผยแพร่ (ค.ศ.): 2017

Volume number: 751 KEM

หน้าแรก: 101

หน้าสุดท้าย: 106

จำนวนหน้า: 6

ISBN: 9783035710823

นอก: 1013-9826

eISSN: 1662-9795

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85028711282&doi=10.4028%2fwww.scientific.net%2fKEM.751.101&partnerID=40&md5=71bacc13e46b17b85d6b04a9072b77b1

ภาษา: English-Great Britain (EN-GB)

ดูบนเว็บไซต์ของสำนักพิมพ์

บทคัดย่อ

A challenge in producing a sacrificial anode through conventional casting method is that the alloying elements in casting segregate during solidification, which further cause non-uniform anode corrosion and reduce anode performance. In this paper, we investigated the performance of Al-5Zn-0.02In anode produced by conventional casting compared with semi-solid casting technique. The performance of conventional cast anode and semi-solid cast anode was measured in terms of anode potential, current capacity, consumption rate and anode efficiency in 3.5% NaCl solution for 14 days. It was found that the microstructure of the conventional cast anode exhibited dendrites and coarse grains and the corrosion was of pitting mode. In contrast, the semi-solid cast anode presented fine grains without any dendrites. The corrosion attacked mainly at the grain boundaries and less on the matrix. Surprisingly, the conventional cast anode provide approximately 10% higher efficiency than that of semi-solid cast anode. ฉ 2017 Trans Tech Publications, Switzerland.

คำสำคัญ

Al-Zn-In sacrificial anode, Anode efficiency, Corrosion morphology, Current capacity, Semi-solid metal casting