A program has experienced pitting corrosion in anhydrous ammonia-charged loop heat pipes. Areas of each loop heat pipe with increased risk of pitting corrosion were previously identified with X-ray image analysis and patched with a formed stainless-steel cap, bonded with a space-approved epoxy. To assess the lifetime of the patch and sensitivity to manufacturing variation, simulated leaks in circular aluminum discs were patched with several different variants on the same ...
The heat of formation at 298K of several possible SiCl4/O2/H2 and TiCl4/O2/H2 species have been calculated by using Moeller-Plesset perturbation theory (MP2) with 6-31G(3df,2p) basis set. The calculated heats of formation are compared to literature values where available and previous calculations that used bond order corrections to empirically improve the heat of formation calculated by Moeller-Plesset perturbation theory. The known species are found to be predicted with fair agreement to ...
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