1985
DOI: 10.1007/bf03257675
|View full text |Cite
|
Sign up to set email alerts
|

Surface Oxides in P/M Aluminum Alloys

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1
1
1

Citation Types

1
66
0

Year Published

1987
1987
2021
2021

Publication Types

Select...
5
1

Relationship

0
6

Authors

Journals

citations
Cited by 66 publications
(67 citation statements)
references
References 2 publications
1
66
0
Order By: Relevance
“…Reduction of the gas content in Al alloy powders prior to compaction is, therefore, critically important. [3][4][5][6] Thermodynamic calculations reveal that it is practically impossible to produce oxide-free powder because in the Al-O system, the partial pressure of O 2 in equilibrium with Al 2 O 3 is far below the range attainable under protective gases or in vacuum systems (Al oxide requires an oxygen partial pressure of 10 À144 atm at 100°C and 10 À64 atm at 500°C [7] ). Consequently, oxidation always takes place on the fresh surface of Al powders.…”
Section: Ultrafine-grained (Ufg) and Nanostruc-mentioning
confidence: 99%
See 4 more Smart Citations
“…Reduction of the gas content in Al alloy powders prior to compaction is, therefore, critically important. [3][4][5][6] Thermodynamic calculations reveal that it is practically impossible to produce oxide-free powder because in the Al-O system, the partial pressure of O 2 in equilibrium with Al 2 O 3 is far below the range attainable under protective gases or in vacuum systems (Al oxide requires an oxygen partial pressure of 10 À144 atm at 100°C and 10 À64 atm at 500°C [7] ). Consequently, oxidation always takes place on the fresh surface of Al powders.…”
Section: Ultrafine-grained (Ufg) and Nanostruc-mentioning
confidence: 99%
“…[9] Accordingly, Al alloy powder is in general covered with an oxide layer bonded with chemisorbed water (Al 2 O 3 AE 3H 2 O) and physisorbed water (H 2 O). [3,9] For gas-atomized powders, high-temperature degassing has been investigated in Al alloys such as Al-Zn-Mg-Cu-Co (Al 7091), [3,10,11] Al-Si-Cu-Mg-Fe, [12,13] Al-Fe-Mo-Zr, [12] and Al-Fe-Mg alloys. [14] Although there is wide variation in alloy composition and production conditions, the reaction that occurs as the degassing temperature increases shows two typical peaks: at temperatures up to~350°C, decomposed water vapor is the predominant species outgassed, whereas hydrogen generation becomes dominant at higher temperatures (~350°C to 450°C), as illustrated schematically in Figure 1.…”
Section: Ultrafine-grained (Ufg) and Nanostruc-mentioning
confidence: 99%
See 3 more Smart Citations