skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Thermodynamic properties of solid alloys of chromium with nickel and iron. Final report

Authors:
;
Publication Date:
Research Org.:
University of Michigan, Ann Arbor, Michigan
Sponsoring Org.:
US Atomic Energy Commission (AEC)
OSTI Identifier:
4485638
Report Number(s):
COO-1791-4
NSA Number:
NSA-28-005015
DOE Contract Number:
AT(11-1)-1791
Resource Type:
Technical Report
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-73
Country of Publication:
United States
Language:
English
Subject:
N80700* -General & Miscellaneous; N50230 -Metals, Ceramics, & Other Materials-Metals & Alloys-Properties, Structure & Phase Studies; *CHROMIUM ALLOYS- THERMODYNAMIC PROPERTIES; ELECTROLYTIC CELLS; IRON ALLOYS; OXIDES; QUANTITY RATIO; TEMPERATURE DEPENDENCE NICKEL ALLOYS

Citation Formats

Mazandarany, F N, and Pehlke, R D. Thermodynamic properties of solid alloys of chromium with nickel and iron. Final report. United States: N. p., 1972. Web. doi:10.2172/4485638.
Copy to clipboard
Mazandarany, F N, & Pehlke, R D. Thermodynamic properties of solid alloys of chromium with nickel and iron. Final report. United States. doi:10.2172/4485638.
Copy to clipboard
Mazandarany, F N, and Pehlke, R D. Sat . "Thermodynamic properties of solid alloys of chromium with nickel and iron. Final report". United States. doi:10.2172/4485638. https://www.osti.gov/servlets/purl/4485638.
Copy to clipboard
@article{osti_4485638,
title = {Thermodynamic properties of solid alloys of chromium with nickel and iron. Final report},
author = {Mazandarany, F N and Pehlke, R D},
abstractNote = {},
doi = {10.2172/4485638},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Jan 01 00:00:00 EST 1972},
month = {Sat Jan 01 00:00:00 EST 1972}
}
Copy to clipboard
Technical Report:
View Technical Report (4.44 MB)
DOI:  10.2172/4485638
Save / Share:
Export Metadata
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.

  • Results of emf measurements on Na/sub 2/O solid electrolytes in binary compounds with Cr/sub 2/O/sub 3/, FeO, and NiO are presented along with thermodynamic properties of these compounds. It was found that reliable thermodynamic data for compounds of NaCrO/sub 2/, Na/sub 2/FeO/sub 2/, NaFeO/sub 2/, Na/sub 2/NiO/sub 2/, and NaNiO/sub 2/ at 500 to 800/sup 0/ can be obtained by using emf measurements with solid electrolyte cells. The pretreatment of heating the cells in a vacuum of 10/sup -2/ torr at 500/sup 0/C or above for about 12 hours causes the emf dependence on temperature to be very small. Themore » measurements were carried out over the temperature range in which no phase transformations occurred, the ..delta..C/sub p/ for the compounds involved was reasonably considered as approximately zero. Linear emf-temperature plots were therefore expected for these cells and the equation of ..delta..G/sup 0//sub f/ was indeed valid for constant values of ..delta..H/sup 0//sub f/ and ..delta..S/sup 0//sub f/. The formation of compound NaCrO/sub 2/ is thermodynamically favorable in a sodium loop made of austenic stainless steels. The critical oxygen concentration for the formation of NaCrO/sub 2/ shows that it is stable in liquid sodium in temperature range from 400 to 1100/sup 0/C and Cr/sub 2/O/sub 3/ does not exist with the double oxide in liquid sodium. The existence temperature for (Na/sub 2/O)/sub 2/.FeO in equilibrium with oxygen saturated liquid sodium is 693/sup 0/K or above, for Na/sub 2/FeO/sub 2/ it is 1141/sup 0/K or above and for NaFeO/sub 2/ it is greater than or equal to 1173/sup 0/K. The double oxides of nickel with sodium oxide are much less stable than the iron double oxides and do therefore not exist in liquid sodium. The nickel in austenitic stainless steel shows the least attack by oxygen saturated liquid sodium.« less

  • ; ;

  • ; ;

  • ;
    This report describes the work that was performed in the following areas: a survey of domestic and some foreign commercial facilities to identify and characterize nuclear power plant components fabricated from age-hardenable Alloys X-750, A-286 and 718; a more detailed characterization and examination of Alloy X-750 fuel assembly holddown spring components that failed during service in a pressurized water reactor (PWR). The results include information such as material heat treatments, operational stress levels, service temperatures, environments, extent of use and performance histories for components in service in PWR and boiling water reactor (BWR) plants. The examination performed on the fuelmore » assembly holddown spring components includes detailed fractographic, metallographic, and microchemical characterization to determine the influence of component processing, applied stress, and design on the failure mechanism. The results obtained indicated that all failures examined were initiated by fatigue and propagated by a combination of mechanisms. Fatigue initiation is believed to occur during normal operation at full power. Surface wear and fretting directly contributed to initiation in several components examined. 26 refs., 1 fig., 8 tabs.« less

  • ; ; ; ...