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Very Fine Metal Powders

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Abstract

Very small particles, with diameters of 10 μm and less, often exhibit unique structures or properties that are not unattainable in larger size ranges. This paper briefly discusses some of the applications for which fine powder sizes are desirable and describes representative processes by which fine particles can be produced. The processes are classified into five general groups according to the physical principles they employ. Special morphological and chemical characteristics of selected powder products are discussed. Rates of production are also considered.

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Authors
  1. J. D. Ayers
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  2. I. E. Anderson
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Additional information

J. D. Ayers received his Ph.D. in metallurgy and materials science from Carnegie-Mellon University in 1970. He is currently working at the Naval Research Laboratory in Washington, D.C. Dr. Ayers is also a member of TMS.

I. E. Anderson received his Ph.D. from the University of Wisconsin-Madison. He is currently working at the Naval Research Laboratory in Washington, D.C. Dr. Anderson is also a member of TMS.

Authors’ Note: In this paper, the examples of applications and processes cited are intended to convey a representative idea of what is happening in the field of fine particle powder metallurgy. These examples do not constitute a thorough review of the field but represent, rather, the authors’ view of what is interesting. The selections are, in general, deliberate, but many good examples are probably unknown to us. Others go unmentioned because proprietary restrictions preclude a meaningful discussion. The description of patented processes does not constitute a recommendation of products generated by the processes.

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Ayers, J.D., Anderson, I.E. Very Fine Metal Powders. JOM 37, 16–21 (1985). https://doi.org/10.1007/BF03257673

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