Low-temperature thermophysical and mechanical properties of high-purity platinum-25 wt % iridium alloy

Conference · Tue Jan 01 00:00:00 EST 1974

OSTI ID:4166434

Foley, R J; Jelinek, F J; Mendelssohn, K ^[1]

---

1. ed.

The low-temperature properties of a platinum-25 wt. percent indium alloy were evaluated in the range from 4 to 300$sup 0$K. The high-purity material was synthesized by consumable arc melting and subjected to a series of cold-work and aging operations to obtain a high-strength, machinable alloy. Values are presented for the thermal contraction and conductivity between 4 and 300$sup 0$K. Measurements were performed using fused silica dilatometry and longitudinal steady-state methods. Mechanical strength data are reported at 20 and 300$sup 0$K. In all cases, the material used was 50 percent cold worked and aged at 973$sup 0$K for 5 h. (auth)

• Research Organization: Univ. of California, Livermore
• NSA Number: NSA-33-006029
• OSTI ID: 4166434
• Resource Relation: Conference: 5. international cryogenic engineering conference, Kyoto, Japan, 7 May 1974; Other Information: See CONF-740509--. Orig. Receipt Date: 30-JUN-76; Related Information: Proceedings of the fifth international cryogenic engineering conference
• Country of Publication: United Kingdom
• Language: English

Related Subjects

N50230* -Metals
Ceramics
& Other Materials-Metals & Alloys-Properties
Structure & Phase Studies
360103* -Materials-Metals & Alloys-Mechanical Properties
*IRIDIUM ALLOYS- PHYSICAL PROPERTIES
*PLATINUM BASE ALLOYS- PHYSICAL PROPERTIES
BINARY ALLOY SYSTEMS
LOW TEMPERATURE
MEDIUM TEMPERATURE
THERMODYNAMIC PROPERTIES
ULTRALOW TEMPERATURE
VERY LOW TEMPERATURE