Matches in SemOpenAlex for { <https://semopenalex.org/work/W4315697721> ?p ?o ?g. }
Showing items 1 to 89 of
89
with 100 items per page.
- W4315697721 endingPage "23" @default.
- W4315697721 startingPage "4" @default.
- W4315697721 abstract "The study covers the effect of alloying elements on the kinetics and mechanism of oxidation at 1150 °С for 30 hours of heat-resistant nickel alloys obtained using such technologies as centrifugal SHS metallurgy (SHS(M)), vacuum induction melting (VIM), elemental synthesis (ES), hot isostatic pressing (HIP). A comparative analysis was carried out for alloys based on nickel monoaluminide and standard AZhK and EP741NP alloys. It was found that kinetic dependences are described mainly by parabolic approximation. The logarithmic law of oxidation with the rapid (within 3–4 hours) formation of the primary protective layer is typical for alloys doped with molybdenum and hafnium. In the case of AZhK and EP741NP, oxidation proceeds according to a parabolic law at the initial stage (2–3 hours), and then according to a linear mechanism with the voloxidation and complete destruction of samples. Oxygen and nitrogen diffusion proceeds predominantly along the nickel aluminide grain boundaries and it is limited by the Al2O3 + Cr2O3 + Xn O m protective film formation. SHS(M) alloys feature by a positive effect of zirconium and tantalum added as dopants on heat resistance. The Ta2O5 phase is formed in the intergranular space, which reduces the rate and depth of oxidation. The zirconium-containing top layer Al2O3 + Zr5Al3O0.5 blocks the external diffusion of oxygen and nitrogen, thereby improving heat resistance. Doping with hafnium also has a positive effect on oxidation resistance and leads to the formation of submicron and nanosized HfO2 inclusions that suppress the grain boundary diffusion of oxygen. MoO3, Mo3O4, CoMoO4 volatile oxides are formed in alloys with a high content of molybdenum and compromise the protective layer integrity. A comparative analysis of the oxidation kinetics and mechanism for samples consisting of the base β-alloy with Cr + Co + Hf additives showed a significant effect on the heat resistance of the sample preparation method. As the proportion of impurity nitrogen decreases and the Cr2O3 sublayer is formed, the oxidation mechanism also changes." @default.
- W4315697721 created "2023-01-12" @default.
- W4315697721 creator A5004508993 @default.
- W4315697721 creator A5041885776 @default.
- W4315697721 creator A5074458334 @default.
- W4315697721 creator A5077871272 @default.
- W4315697721 creator A5082417641 @default.
- W4315697721 date "2022-09-06" @default.
- W4315697721 modified "2023-09-27" @default.
- W4315697721 title "Oxidation kinetics and mechanism of nickel alloys" @default.
- W4315697721 cites W1542623565 @default.
- W4315697721 cites W1966484136 @default.
- W4315697721 cites W1992043595 @default.
- W4315697721 cites W1993439980 @default.
- W4315697721 cites W1998446419 @default.
- W4315697721 cites W1999436790 @default.
- W4315697721 cites W2044861893 @default.
- W4315697721 cites W2051475316 @default.
- W4315697721 cites W2084534582 @default.
- W4315697721 cites W2087540447 @default.
- W4315697721 cites W2093330841 @default.
- W4315697721 cites W2403490067 @default.
- W4315697721 cites W2521563091 @default.
- W4315697721 cites W2591708932 @default.
- W4315697721 cites W2789439299 @default.
- W4315697721 cites W2789964596 @default.
- W4315697721 cites W2905271445 @default.
- W4315697721 cites W2910684188 @default.
- W4315697721 cites W2996712623 @default.
- W4315697721 cites W3036587869 @default.
- W4315697721 cites W3081151590 @default.
- W4315697721 cites W3159387795 @default.
- W4315697721 cites W3167141709 @default.
- W4315697721 cites W3187787136 @default.
- W4315697721 cites W3203007112 @default.
- W4315697721 cites W4200120048 @default.
- W4315697721 cites W4236592904 @default.
- W4315697721 doi "https://doi.org/10.17073/1997-308x-2022-3-4-23" @default.
- W4315697721 hasPublicationYear "2022" @default.
- W4315697721 type Work @default.
- W4315697721 citedByCount "1" @default.
- W4315697721 countsByYear W43156977212023 @default.
- W4315697721 crossrefType "journal-article" @default.
- W4315697721 hasAuthorship W4315697721A5004508993 @default.
- W4315697721 hasAuthorship W4315697721A5041885776 @default.
- W4315697721 hasAuthorship W4315697721A5074458334 @default.
- W4315697721 hasAuthorship W4315697721A5077871272 @default.
- W4315697721 hasAuthorship W4315697721A5082417641 @default.
- W4315697721 hasConcept C121332964 @default.
- W4315697721 hasConcept C191897082 @default.
- W4315697721 hasConcept C192562407 @default.
- W4315697721 hasConcept C2780036946 @default.
- W4315697721 hasConcept C47908070 @default.
- W4315697721 hasConcept C504270822 @default.
- W4315697721 hasConcept C534791751 @default.
- W4315697721 hasConcept C546638069 @default.
- W4315697721 hasConcept C69357855 @default.
- W4315697721 hasConcept C87976508 @default.
- W4315697721 hasConcept C97355855 @default.
- W4315697721 hasConceptScore W4315697721C121332964 @default.
- W4315697721 hasConceptScore W4315697721C191897082 @default.
- W4315697721 hasConceptScore W4315697721C192562407 @default.
- W4315697721 hasConceptScore W4315697721C2780036946 @default.
- W4315697721 hasConceptScore W4315697721C47908070 @default.
- W4315697721 hasConceptScore W4315697721C504270822 @default.
- W4315697721 hasConceptScore W4315697721C534791751 @default.
- W4315697721 hasConceptScore W4315697721C546638069 @default.
- W4315697721 hasConceptScore W4315697721C69357855 @default.
- W4315697721 hasConceptScore W4315697721C87976508 @default.
- W4315697721 hasConceptScore W4315697721C97355855 @default.
- W4315697721 hasIssue "3" @default.
- W4315697721 hasLocation W43156977211 @default.
- W4315697721 hasOpenAccess W4315697721 @default.
- W4315697721 hasPrimaryLocation W43156977211 @default.
- W4315697721 hasRelatedWork W1499785597 @default.
- W4315697721 hasRelatedWork W1535460358 @default.
- W4315697721 hasRelatedWork W2006451922 @default.
- W4315697721 hasRelatedWork W2057932623 @default.
- W4315697721 hasRelatedWork W2078595713 @default.
- W4315697721 hasRelatedWork W2099851698 @default.
- W4315697721 hasRelatedWork W2378316091 @default.
- W4315697721 hasRelatedWork W2488322673 @default.
- W4315697721 hasRelatedWork W3111377709 @default.
- W4315697721 hasRelatedWork W4315697721 @default.
- W4315697721 isParatext "false" @default.
- W4315697721 isRetracted "false" @default.
- W4315697721 workType "article" @default.