SELECTION AND EVALUATION OF RARE OR UNUSUAL METALS. PART II. THE METALLURGY OF YTTRIUM AND THE RARE EARTH METALS. Period covered: October 1957 to October 1958. METALLIC MATERIALS. Task title: UNIQUE METALLIC MATERIALS AND PROCESSES

Technical Report · Fri Oct 31 04:00:00 EST 1958

OSTI ID:4221416

Love, B

Studies were made of yttrium and the rare-earth metals and of alloys of titanium and beryllium with rare-earth additions. Improved methods for the production of pure metals are described. A complete metallographic procedure has been developed. Procedures for the chemical and spectrographic analysis of metals and alloys are provided including a method for oxygen analysis. The rate of moisture absorption of rare-earth oxides was determined under controlled temperature and humidity conditions. Atmospheric corrosion of the metals in dry air was investigated to 600 deg C and in humid air to 95 deg C. The methods of preparation analysis, and examination of titanium and beryllium alloys containing up to 10% rare-earth elements are presented. Tentative partial constitutional diagrams are constructed. Very low solubility was found except for lanthanum which had an indicated solubility between 0.2 and 1.5 wt. %. (auth)

• Research Organization: Research Chemicals, Inc., Burbank, Calif.
• NSA Number: NSA-14-003797
• OSTI ID: 4221416
• Report Number(s): WADC-TR-57-666(Pt.II); AD-2118
• Country of Publication: United States
• Language: English

Related Subjects

ADSORPTION
AIR
BERYLLIUM ALLOYS
CORROSION
HUMIDITY
LANTHANUM
METALLOGRAPHY
METALLURGY
METALS, CERAMICS, AND MATERIALS
OXYGEN
PHASE DIAGRAMS
PREPARATION
PRODUCTION
QUALITATIVE ANALYSIS
RARE EARTHS
SOLUBILITY
SPECTROSCOPY
TEMPERATURE
TITANIUM ALLOYS
YTTRIUM