| About this Abstract |
| Meeting |
MS&T23: Materials Science & Technology
|
| Symposium
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High Temperature Corrosion and Degradation of Structural Materials
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| Presentation Title |
Corrosion Behavior of Compositionally Gradient Additively Manufactured 316L Stainless Steel Doped with Hafnium in Eutectic NaCl-MgCl2 Molten Salt at 700 °C |
| Author(s) |
Laura Hawkins, Jingfan Yang, Michael Woods, Ruchi Gakhar, Lin Shao, Xiaoyuan Lou, Daniel Murray, Lingfeng He |
| On-Site Speaker (Planned) |
Laura Hawkins |
| Abstract Scope |
Classification of structural materials for next generation molten-salt reactors must consider corrosion of the salt-facing components. This study combines additively manufactured (AM) high-throughput materials characterization with molten salt corrosion to demonstrate the effects of hafnium dopants on corrosion behavior. The AM 316L stainless steel was submerged in eutectic NaCl-MgCl2 molten salt at 700 °C for 30 and 240 h. The morphology and microstructure of the gradient region after the corrosion test were analyzed using SEM-EDS to understand the intergranular corrosion and quantify Cr leaching and corrosion rates. In addition, TEM was used to characterize corrosion by-products. The resulting data will show increased attack of grain boundaries as a function of time, and the effect of Hf on reducing corrosion rates. |