ASM Failure Analysis Case Histories: Failure Modes and Mechanisms
Intergranular Corrosion of a Type 304 Stainless Steel Fused-Salt Pot Due to Sensitization
-
Published:2019
Abstract
A fused-salt electrolytic-cell pot containing a molten eutectic mixture of sodium, potassium, and lithium chlorides and operating at melt temperatures from 500 to 650 deg C (930 to 1200 deg F) exhibited excessive corrosion after two months of service. The pot was a welded cylinder with 3-mm thick type 304 stainless steel walls and was about 305 mm (12 in.) in height and diam. Analysis (visual inspection and 500x micrographs etched with CuCl2) supported the conclusions that the pot failed by intergranular corrosion because an unstabilized austenitic stainless steel containing more than 0.03% carbon had been sensitized and placed...
Sign in
ASM members
Member Sign InIntergranular Corrosion of a Type 304 Stainless Steel Fused-Salt Pot Due to Sensitization, ASM Failure Analysis Case Histories: Failure Modes and Mechanisms, ASM International, 2019, https://doi.org/10.31399/asm.fach.modes.c0046476
Download citation file:
IMAT Registration
September 12–15, 2022
New Orleans, Louisiana
Keep up to date with the latest materials, applications and technologies. Register today for IMAT 2022!