The chemical stabilities of the synthesized and isolated phases, TiC,
TiN, Ti(C,N), Ti4C2S2, (CrxFe1-x)23C6, (CrxFe1-x)7C3, Mo2C, MnS, (CrxM
n1-x)S, were estimated in pickling media: nitric acid + hydrofluoric a
cid, nitric acid, hydrochloric acid and potassium permanganate + sodiu
m hydroxide, and in high temperature water, 513 K, for 3.6-720 ks. Som
e of the tested pickling solutions do not dissolve or only partially d
issolve titanium-containing phases isolated from Ti-stabilized austeni
tic stainless steels. Sulphide phases isolated from stabilized stainle
ss steels are much more stable in high temperature water in comparison
with phases isolated from unstabilized stainless steels. Chromium car
bide phases do not undergo any significant changes in high temperature
water.