Vacuum degassing behavior of rapidly solidified Al-Mn-Zr alloy powders
- 1. Department of Materials Science, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555 (Japan)
Description
Gas desorption behavior and surface change characteristics of Al-Mn-Zr, Al-Mn, and Al-Zr alloy powders with heating in vacuo have been investigated by temperature-programmed desorption (TPD) and X-ray photoelectron spectroscopy (XPS) measurements. TPD measurements on powders exposed to humid air, dry air, and high purity argon gas were performed to determine the gas species evolved during degassing of Al alloy powders. The alloy composition and P/M processing atmosphere had a strong influence on degassing behavior. The surface oxides of Al alloy powders containing Mn and/or Zr were prone to hydration. Thus, the formation of fresh Al2O3 on the Al alloy powders occurred at low temperature during vacuum degassing by the reaction, Al + 3H2O = Al2O3 + 3H2. High-temperature XPS showed that decomposition of the hydroxide into oxide on the Al-Mn-Zr alloys occurred at 623 K
Additional details
Identifiers
- DOI
- 10.1016/j.msea.2006.02.252;
- PII
- S0921-5093(06)01336-0;
Publishing Information
- Journal Title
- Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing
- Journal Volume
- 449-451
- Journal Page Range
- p. 1013-1017
- ISSN
- 0921-5093
- CODEN
- MSAPE3
Conference
- Title
- 12. international conference on rapidly quenched and metastable materials
- Acronym
- RQ12
- Dates
- 21-26 Aug 2005
- Place
- Jeju (Korea, Republic of)
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 39037704
- Subject category
- S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- ALUMINIUM ALLOYS; ALUMINIUM OXIDES; ARGON; DECOMPOSITION; DEGASSING; HEATING; HYDRATION; HYDROXIDES; IMPURITIES; MANGANESE ALLOYS; POWDER METALLURGY; POWDERS; X-RAY PHOTOELECTRON SPECTROSCOPY; ZIRCONIUM ALLOYS
- Descriptors DEC
- ALLOYS; ALUMINIUM COMPOUNDS; CHALCOGENIDES; CHEMICAL REACTIONS; ELECTRON SPECTROSCOPY; ELEMENTS; FLUIDS; GASES; HYDROGEN COMPOUNDS; METALLURGY; NONMETALS; OXIDES; OXYGEN COMPOUNDS; PHOTOELECTRON SPECTROSCOPY; RARE GASES; SOLVATION; SPECTROSCOPY; TRANSITION ELEMENT ALLOYS
Optional Information
- Copyright
- Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.