|
|
|
| Oxidation of Ag--Cr alloys prepared by powder metallurgy in 0.1 MPa O{2} |
| ;; |
| 宋尽霞110015 沈阳 中科院金属研究所 |
|
Cite this article:
. Oxidation of Ag--Cr alloys prepared by powder metallurgy in 0.1 MPa O{2}. Chin J Mater Res, 2004, 18(4): 352-356.
|
|
|
Abstract The oxidation behavior of powder metallurgical Ag--Cr ~alloys ~at ~700 and 800℃
~in ~0.1~MPa O{2} was studied. PM Ag--35Cr alloy formed complex scale including
silver metal, Cr$_{2}$O$_{3}$, AgCrO$_{2}$ and internal oxidation zone of chromium.
A continuous layer of Cr$_{2}$O$_{3}$ under an external layer of AgCrO$_{2}$
formed on the PM Ag--69Cr alloy. The internal oxidation of chromium was suppressed
in this alloy. The oxidation of PM Ag--Cr alloys was strongly affected by the
restriction to chromium diffusion due to the presence of two phases and by the
relatively large size of the chromium particles, which restrained the formation
of exclusive Cr$_{2}$O$_{3}$ scales which restrained the formation of exclusive
Cr$_{2}$O$_{3}$ scales at the chromium contents 69\%.
The appearance of pure silver on the PM Ag--35Cr alloy was a result of the stress
resulting from large volume change caused by internal oxidation.
|
|
Received: 31 August 2004
|
|
|
1 T.B.Massalski, Binary Alloys Phase Diagrams, (ASM, USA, 1986) p.17
2 F.Gesmundo, F.Viani, Y.Niu, D.L.Douglass, Oxid. Met., 40(3/4) , 373(1993)
3 F.Gesmundo, Y.Niu, F.Viani, Oxid. Met., 43(3/4) , 379(1995)
4 F.Gesmundo, F.Viani, Y.Niu, Oxid. Met., 47(3/4) , 355(1997)
5 FU Guangyan, NIU Yan, WU Weitao, Acta Metallurgica Sinica, 34(2) , 159(1998) (付广艳,牛焱,吴维(山文)金属学报,34(2) , 159(1998) )
6 FU Guangyan, NIU Yan, WU Weitao, Acta Metallurgica Sinica, 39(3) , 297(2003) (付广艳,牛焱,吴维(山文),金属学报,39(3) , 297(2003) )
7 FU Guangyan, NIU Yan, WU Weitao, Transactions of Nonferrous Metals Society of China, 12(2) , 874(2002)
8 Y.Niu, G.Y.Fu, F.Gesmundo, Corrosion Science, 41, 1791(1999)
9 F.Gesmundo, Y.Niu, D.Oquab, C.Roos, B.Pieraggi, Oxid. Met., 49(1/2) , 115(1998)
10 FU Guangyan, NIU Yan, WU Weitao, GUAN Hengrong, Transactions of Nonferrous Metals Society of
11 China, 11(3) , 333(2001)
12 G.Y.Fu, Y.Niu, F.Gesmundo, Corrosion Science, 45, 559(2003) S.Guruswamy, S.M.Park, J.P.Hirth, R.A.Rapp, Oxid Met, 26(1/2) , 77(1986)
13 D.L.Douglass, Oxid. Met., 44(1/2) , 81(1995) |
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
