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The hafnium-iridium system.

Authors
Copeland-MI; Goodrich-D
Source
J Less-Common Met 1969 Aug; 18(4):347-355
NIOSHTIC No.
10010275
Abstract
The Bureau of Mines has studied hafnium-iridium phase relations by metallography, thermal analysis, electron-beam microprobe, and x-ray diffraction. Four intermediate phases were identified. Eutectic and eutectoid reactions occur between hafnium and Hf2Ir at 1425 degrees C and 1375 degrees C, respectively. Also, eutectics occur between HfIr and HfIr3 at 2085 degrees C, and between HfIr3 and iridium at 2250 degrees C. Each of the phases occurs over a range of compositions, except Hf5Ir3 which is nearly stoichiometric.
Keywords
Metals; Metallurgical-processes; Metallurgy
CODEN
JCOMAH
Publication Date
19690801
Document Type
OP; Journal Article
Fiscal Year
1969
NTIS Accession No.
NTIS Price
Identifying No.
OP 135-70
Issue of Publication
4
ISSN
0022-5088
NIOSH Division
ALRC
Source Name
Journal of the Less-Common Metals
State
OR
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