Corrosion Behaviors of Iron, Chromium, Nickel, Low-Carbon Steel, and Four Types of Stainless Steels in Liquid Antimony-Tin Alloy

Abstract

Corrosion resistance of metals and alloys toward liquid metals determines the service performances and lifetime of the devices using liquid metals. This paper studies the static corrosion behaviors of iron, chromium, nickel, low carbon steel, and four types of stainless steels (SS410, SS430, SS304, and SS316L) in liquid Sb-Sn at 500°C, aiming to screen corrosion-resistant stainless steel for Li||Sb-Sn liquid metal batteries (LMBs). The corrosion rates of Fe and Ni are 0.94 μm/h and 6.03 μm/h after 160 h measurement, respectively. Cr shows a low corrosion rate of < 0.05 μm/h, which is due to the formation of a relatively stable Cr-Sb layer that may be able to prevent the interdiffusion between the solid substrate and liquid Sb-Sn. Ni has a high corrosion rate because the formed Ni-Sb and Ni-Sn compounds are soluble in the liquid Sb-Sn. The corrosion products of both pure metals and SS can be predicted by thermodynamic and phase diagram analysis. Among the four types of stainless steel, SS430 shows the best corrosion resistance toward liquid Sb-Sn with a corrosion rate of 0.19 μm/h. Therefore, a liquid Sb-Sn resistant material should have a high Cr content and a low Ni content, and this principle is applicable to design metallic materials not only for LMBs but also for other devices using liquid Sb- and Sn-containing liquid metals.

Influence of microstructure of CoCrNi medium entropy alloy on its corrosion behavior

“…According to the high entropy effect (MacDonald et al , 2017), the equi-atomic CoCrNi MEA has the highest configurational entropy and has excellent mechanical properties and unique electrochemical response that can be measured in corrosive environment (Shi et al , 2017). Traditional chromium-containing alloys are considered corrosion-resistant because Cr is the primary passivating element, which forms a protective Cr-based passivation film (Liu et al , 2021; Maurice et al , 1998). Both Ni and Co are important elements in the alloy to stabilize the austenitic phase.…”

Effect of Ca and Sb on the Corrosion Resistance of E690 Steel in Marine Atmosphere Environment

“…Several methods have been proposed to improve the corrosion resistance of steel in marine environments [9][10][11]. These methods include the addition of corrosion inhibitors [12,13], coatings [14][15][16], and alloying elements [13,17,18].…”