LiNO3 Effect on Corrosion Prevention of Aluminum with Complex Shapes.

Corrosion of aluminium in ordinary Portland cement paste: Influence of matrix porosity and the presence of LiNO3 corrosion inhibitor

“…The difference observed for samples OPC-0.36Li and OPC-0.8Li could be correlated with the inhibition of the corrosion by the formation of an Al-Li protective layer at the surface of the metallic aluminium. [18] The impedance induced by the cement paste is then limited because aluminium corrosion is mainly caused by the diffusion of OH − and Al(OH) 4…”

“…This inhibition was attributed to the formation of a LiH(AlO 2 ) 2 ∙5H 2 O (Li–Al) preservation film on the aluminium surface during the solidification process of the cement‐based material. [ 18 ] At least 1.5 wt% lithium nitrate should be added to substantially decrease the corrosion rate. And, 3 wt% LiNO 3 , or more, is needed to reduce the hydrogen gas generation rate.…”

Assessment of the Potential for Hydrogen Generation During Grouting Operations in the R and P Reactor Vessels

“…Additionally, the hydrogen gas generation rate for the aluminum in grout was also comparable to other values in the literature. Matsuo et al measured a rate of 0.105 cm 3 /min for aluminum exposed to Portland cement at room temperature [6,7].…”

Assessment of the Potential for Hydrogen Generation During Grouting Operations in the R- And P-Reactor Vessels

“…Additionally, the hydrogen gas generation rate for the aluminum in grout was also comparable to other values in the literature. Matsuo et al measured a rate of 0.105 cm 3 /min for aluminum exposed to Portland cement at room temperature [8,9].…”

“…A a = π * D t 2 /4 -N USH *π*(D USH_o 2 -D USH_i 2 )/4 -N T * π*(D T_o 2 -D T_i 2 )/4 -N ss * π*D ss 2 /4 (8) where subscript a is for the cross-sectional area, subscript t is for the tank, and subscript ss is for the septifoils and the spargers. In P-reactor it is estimated that there are 432 USH tubes, 61 septifoils, and 66 thimble tubes and 6 spargers [13].…”