H 42 Hazoor, Singh SIDHU. Evaluation of the Hot Corrosion Behavior of LPG Assisted HVOF NiCr Wire Sprayed Boiler Tube Steels in Molten Salt Environments [Text] / Singh SIDHU Hazoor, Singh SIDHU Buta, S. PRAKASH // ISIJ International. - 2006. - V. 46, N. 8 - 16. - P1067 - 1074. - Bibligr.: p. 1074 (29 ref.) . - ISSN 0915-1559 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): СУЛЬФАТЫ -- ОКСИД ВАНАДИЯ -- КОРРОЗИЯ -- NiCr |
H 82 Hot corrosion behavior of detonation gun sprayed Cr3C2–NiCr coatings on Ni and Fe-based superalloys in Na2SO4–60% V2O5 environment at 900 °C / Subhash Kamal [и др.] // Journal of Alloys and Compounds. - 2008. - Vol. 463, № 1-2. - С. 358-372 : рис. - Библиогр.: с. 372 (40 ref.) . - ISSN 0925-8388 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): СУЛЬФАТЫ -- ОКСИД ВАНАДИЯ -- КОРРОЗИЯ -- Cr3C2-NiCr |
T 44 The influence of Nb on hot corrosion behavior of Ni-based superalloy at 800 °C in a mixture of Na2SO4–NaCl / Fei Weng, Huijun Yu, Kai Wan, Chuanzhong Chen // Journal of Materials Research. - 2014. - Vol. 29, № 21. - P2596-2603 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): НИОБИЙ -- КОРРОЗИЯ ВЫСОКОТЕМПЕРАТУРНАЯ -- ОКИСЛЕНИЕ КИНЕТИЧЕСКОЕ Аннотация: New-type Ni-based superalloys with and without Nb were designed in this study. Their hot corrosion behaviors were investigated at 800 °C with the deposition of a mixture of Na2SO4 and NaCl. The corrosion kinetics was studied by thermogravimetry. Microstructure of the corrosion scales was studied by SEM and the phase constituent was analyzed by XRD. Results showed that the corrosion kinetics followed approximately parabolic law. The corrosion scales on the two Ni-based alloys were comprised of Cr2O3, Al2O3, TiO2, and NiCr2O4. NiO was only detected in the scale on alloy without Nb. Nb2O5 appeared with the addition of 2.0 wt% Nb. No sulfide emerged in the scales. The corrosion scales both exhibited a layered structure. With Nb addition, the hot corrosion resistance of the alloy was notably improved. The action mechanism of Nb was investigated extensively in this study |