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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 C and 1375 C, respectively. Also, eutectics occur between HfIr and HfIr3 at 2085 C, and between HfIr3 and iridium at 2250 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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