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High temperature oxidation behaviour of Ag–36.35 wt.% Zn and Ag–38.50 wt.% Zn–0.60 wt.% Al
Corrosion Science ( IF 8.3 ) Pub Date : 2018-02-01 , DOI: 10.1016/j.corsci.2017.11.007
S. Chandra-ambhorn , P. Chumpanya

Abstract Ag–36.35 wt.% Zn and Ag–38.50 wt.% Zn–0.60 wt.% Al were oxidised in air at 450–650 °C up to 48 h. The oxidation kinetics of both alloys were parabolic with the lower rate constant for the latter alloy. After oxidation for 48 h, thermal oxide scale on Ag–36.35 wt.% Zn was ZnO at all studied temperatures. When 0.60 wt.% Al was added to Ag–38.50 wt.% Zn, ZnO and ZnAl 2 O 4 were formed at all studied temperatures. Al 2 O 3 was evidently observed at 550 and 650 °C. The formation of Al-containing oxides helped reduce the oxidation rate of Ag–38.50 wt.% Zn–0.60 wt.% Al.

中文翻译:

Ag–36.35 wt.% Zn 和 Ag–38.50 wt.% Zn–0.60 wt.% Al 的高温氧化行为

摘要 Ag–36.35 wt.% Zn 和 Ag–38.50 wt.% Zn–0.60 wt.% Al 在空气中在 450–650 °C 下氧化长达 48 小时。两种合金的氧化动力学都是抛物线形的,后一种合金的速率常数较低。氧化 48 小时后,在所有研究温度下,Ag–36.35 wt.% Zn 上的热氧化皮都是 ZnO。当将 0.60 wt.% Al 添加到 Ag–38.50 wt.% Zn 中时,在所有研究温度下都会形成 ZnO 和 ZnAl 2 O 4。在 550 和 650 °C 下明显观察到 Al 2 O 3 。含铝氧化物的形成有助于降低 Ag–38.50 wt.% Zn–0.60 wt.% Al 的氧化速率。
更新日期:2018-02-01
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