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Bureau of Mines / Minerals yearbook: Metals and minerals 1978-79
Year 1978-79, Volume 1 (1978-1979)

Moore, Christine M.
Rare-earth minerals and metals,   pp. 735-742 PDF (915.0 KB)


Page 742

742 MINERALS YEARBOOK, 1978-79 
carbon monoxide from carbon dioxide at temperatures within the range of present
solar-thermal technology.'4 
 The Bureau of Mines began studies to increase rare-earth recovery from bastnäsite
as well as to cut energy consumption in the flotation process. A patent application
was filed for a rare-earth-metal cobalt magnet containing copper and magnesium
developed by the Bureau. The magnet does not contain samarium as an essential
component.1' 
 Results of research involving the production, characteristics, and use of
rare-earth cobalt intermetallic compounds and permanent magnets were summarized
at the Third and Fourth International Workshops on Rare-Earth-Cobalt Permanent
Magnets.'6 
 The 14th Rare Earth Research Conference was held at Fargo, N. Dak., in June
1979. The program reviewed all phases of rare-earth research and development
and included sessions on spectrosopy; metallurgy and materials preparation;
magnetism; solution, solvation, and analytical chemistry; X-ray and neutron
diffraction; and rareearth technology. Publication of the proceedings was
planned. 
1Mineral specialist. Section of Nonferrous Metals. 
2Fort, J. P. Availability of Rare Earths for the Rare Earth-Cobalt Permanent
Magnets Market. Pres. at Internat. workshop on Rare Earth-Cobalt Permanent
Magnets and Their Applications, La Jolla, Calif., June 27-30, 1978. 
' Rose, E. E. Rare-Earth Prospects in Canada. CIM Bulletin, v. 72, No. 805,
May 1979, pp. 110-116. 
 4Jandeska, W. F. Fabricating Rare Earth-Cobalt Magnets in Thin, Arc Segments
for Lightweight DC Motors. Proc. Internat. Workshop on Rare Earth-Cobalt
Magnets and Their Applications. La Jolla, Calif., June 27-30, 1978, pp. 450-464.
 ' Furukawa, T. Japan Testing Heat-Recycling Chemical Engine. Am. Metal Market,
v. 86, No. 30, Feb. 13, 1978, p. 
15. 
 6Weinberg, M. Glass Processing in Space. The Glass Industry, v. 59, No.3,
March 1978, pp. 22-28. 
 7Willing, G., and K. A. Gschneidner, Jr. Fused Salt 
Electrorefining of Gadolinium: An Evaluaton of Three 
Electrolytes. J. Less-Common Metals, v. 60, 1978, pp. 221- 
230. 
 8Morrice, E., and M. M. Wong. Fused-Salt Electrowinning and Electrorefming
of Rare-Earth and Yttrium Metals. Minerals Sci. Eng., v. 11, No.3, July 1979,
pp. 125-136. 
 9Lalich, M. J. Effects of Rare Earths on Structure and Properties of Cast
Iron. Foundry Management & Technol., v. 106, No. 3, March 1978, pp.
118.129.
 ' °Clarke, D. R., and G. Thomas. Microstructure of Y,O, Fluxed Hot-Pressed
Silicon Nitride. J. A~n. Ceram. Soc., v. 61, No. 3-4, March-April 1978, pp.
114.118. 
 ——Tsuge, A., and K. Nashida. High Strength HotPressed
S1~N4
With Concurrent Y203 and A.l.03 Additions. Ceram. Bull., v. 57, No. 4, April
1978, pp. 424-426. 
 ' 1Greskovich, C., and C. O'Clair. Effect of Impurities on Sintering Si,N4
Containing MgO or Y20, Additives. Ceram. Bull., v. 57, No. 11, November 1978,
pp. 1055-1156. 
 "Bowen, L J., I. G. Carruthers, and R. J. Brook. HotPressing of ShiN4
With
Y2N, and Li20 as Additives. J. Am. Ceram. Soc., v. 61, No. 7-8, July-August
1978, pp. 335-339. 
 ' 3Klinian, M. L Rare Earth Ceramic Technology (U.S.S.R.). Army Materials
and Mechanics Research Center. January 1978, pp. 79; available from National
Technical Information Service, Springfield, Va. 
 ' 4Chemical Engineering. Chementator. V. 86, No. 17, Aug. 13, 1979, p. 84.
 Metal-Cobalt Magnets Containing Copper and Magnesium. Dec. 15, 1978, 14
pp.; available from National 
Technical Information Service, Springfield, Va., PB 292 
212. 
 ' 6Strnat, K. J. Proc. Internat. Workshop on Rare-Earth- 
Cobalt Permanent Magnets and Their Applications, June 
27-30, 1978, San Diego, Calif., 529 pp.; available from 
University of Dayton, Magnetics Laboratory, Dayton, 
Ohio. 
 ——Proc. 4th Internat. Workshop on Rare-EarthCobalt Permanent
Magnets and Their Applications, May 22-24, 1979, Hakone National Park, Japan,
450 pp.; available from University of Dayton, Magnetics Laboratory, Dayton,
Ohio. 


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