Oxidation behavior of nickel--chromium--aluminum--yttrium -- magnesium oxide and nickel--chromium--aluminum--yttrium -- zirconate type of cermets
Description
The 1100 and 1200 C cyclic oxidation resistance of dense Ni-Cr-Al-Y - MgO, Ni-Cr-Al-Y - CaZrO3, Ni-Cr-Al-Y - SrZrO3, Ni-Cr-Al-Y - MgZrO3 cermets and a 70 percent dense Ni-Cr-Al-Y developmental material was determined. The cermets contained 60 and 50 volume percent of Ni-Cr-Al-Y which formed a matrix with the oxide particles imbedded in it. The cermets containing MgO were superior to cermets based on zirconates and to the porous Ni-Cr-Al-Y material. Cyclic oxidation tests of four cermet systems are reported; variables include simple oxide content, element content, oxidation temperature, specific weight change, number of cycles, and X-ray diffraction pattern intensities: 2 figures and 3 tables include numeric data
Availability note (English)
MF available from INIS under the Report Number; Available from NTIS. PC A02/MF A01.
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Additional details
Publishing Information
- Imprint Pagination
- 18 p.
- Report number
- N--77--16115
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 8346362
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Descriptors DEI
- ALUMINIUM ALLOYS; CALCIUM COMPOUNDS; CHEMICAL COMPOSITION; CHROMIUM ALLOYS; HEAT RESISTING ALLOYS; MAGNESIUM COMPOUNDS; MAGNESIUM OXIDES; MICROSTRUCTURE; NICKEL ALLOYS; OXIDATION; QUATERNARY ALLOY SYSTEMS; STRONTIUM COMPOUNDS; VERY HIGH TEMPERATURE; YTTRIUM ALLOYS; ZIRCONATES
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; ALLOY SYSTEMS; ALLOYS; CHALCOGENIDES; CHEMICAL REACTIONS; CRYSTAL STRUCTURE; OXIDES; OXYGEN COMPOUNDS; TRANSITION ELEMENT ALLOYS; TRANSITION ELEMENT COMPOUNDS; ZIRCONIUM COMPOUNDS
Optional Information
- Secondary number(s)
- NASA-TM-X--3466; E--8834.