Pseudo-icosahedral as a high-temperature protective material
Journal Article
·
· Physical Review Materials
- Farmingdale State College, NY (United States). Department of Physics
- Clemson Univ., SC (United States). Department of Physics and Astronomy
- Texas A & M Univ., College Station, TX (United States). Department of Physics and Astronomy
- JEOL USA Incorporated, MA (United States)
- Stony Brook Univ., NY (United States). Dept. of Physics and Astronomy
- Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)
- Farmingdale State College, NY (United States). Department of Mechanical Engineering Technology
In this paper, we report here a course of basic research into the potential suitability of a pseudo-icosahedral Cr aluminide as a material for high temperature protective coatings. Cr55Al232-δ [δ = 2.70(6)] exhibits high hardness at room temperature as well as low thermal conductivity and excellent oxidation resistance at 973 K, with an oxidation rate comparable to those of softer, denser benchmark materials. Lastly, the origin of these promising properties can be traced to competing long-range and short-range symmetries within the pseudo-icosahedral crystal structure, suggesting new criteria for future materials research.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE
- Grant/Contract Number:
- SC0012704; AC02-98CH1886
- OSTI ID:
- 1435160
- Alternate ID(s):
- OSTI ID: 1426839
- Report Number(s):
- BNL-203573-2018-JAAM; TRN: US1802565
- Journal Information:
- Physical Review Materials, Vol. 2, Issue 3; ISSN 2475-9953
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 1 work
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