Доступ предоставлен для: Guest
Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
Atomization and Sprays
Импакт фактор: 1.737 5-летний Импакт фактор: 1.518 SJR: 0.814 SNIP: 1.18 CiteScore™: 2.2

ISSN Печать: 1044-5110
ISSN Онлайн: 1936-2684

Выпуски:
Том 30, 2020 Том 29, 2019 Том 28, 2018 Том 27, 2017 Том 26, 2016 Том 25, 2015 Том 24, 2014 Том 23, 2013 Том 22, 2012 Том 21, 2011 Том 20, 2010 Том 19, 2009 Том 18, 2008 Том 17, 2007 Том 16, 2006 Том 15, 2005 Том 14, 2004 Том 13, 2003 Том 12, 2002 Том 11, 2001 Том 10, 2000 Том 9, 1999 Том 8, 1998 Том 7, 1997 Том 6, 1996 Том 5, 1995 Том 4, 1994 Том 3, 1993 Том 2, 1992 Том 1, 1991

Atomization and Sprays

DOI: 10.1615/AtomizSpr.v2.i3.40
pages 253-274

ATOMIZATION OF ALLOY POWDERS

Enrique J. Lavernia
Department of Chemical Engineering and Materials Science, University of California, Irvine, California, 92717, USA
Tirumalai S. Srivatsan
College of Engineering, Department of Mechanical Engineering, The University of Akron, Akron, Ohio 44325
Roger H. Rangel
Department of Mechanical and Aerospace Engineering, University of California, Irvine, California 92717, USA

Краткое описание

The critical need to enhance the performance of currently available structural materials has prompted the development of a multitude of novel synthesis techniques. Among these, atomization has received considerable attention as a result of the large degree of microstructural control that is achievable with this technique. The large body of scientific literature reviewed in this article provides some examples of the successful application of a wide variety of atomization techniques for the production of metallic powders with unique combinations of physical and mechanical properties. The energy required for disintegration of the molten metal during atomization may be imparted in several ways. The most commonly used atomization techniques are (1) fluid atomization, (2) centrifugal atomization, (3) subsonic gas atomization, and (4) supersonic and other high-energy methods. Gas atomization, however, remains the most popular approach for the efficient manufacture of a wide variety of alloy compositions, as a result of the highly nonequilibrium transfer of thermal energy associated with this technique.
The scientific literature reviewed in the present work also reveals that a large proportion of the research effort has been aimed at developing equations that can be utilized to predict the resultant powder characteristics from relevant processing parameters and physical properties in an effort to (1) enhance our understanding of the fundamental mechanisms governing atomization and (2) increase the effectiveness of this technique for the manufacture of alloy powders. The research work reviewed in the present article demonstrates that most of these investigations were conducted with water, wax/polyethylene mixtures, oils, and molten waxes. Only two exceptions to this general trend were uncovered: a study involving the nitrogen atomization of cast iron (J. A. Tallmadge, 1978), and the development of a correlation to predict powder sizes during gas atomization of molten metals (H. Lubanska, 1970). The lack of experimental atomization data for metals and alloys was attributed to the extreme reactivity associated with molten metals, which renders these experiments difficult to control and interpret.


Articles with similar content:

PREPARATION OF INSULATING REFRACTORY MATERIALS BY PLASMA SPRAY TECHNOLOGY
High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes, Vol.10, 2006, issue 3
Vitas Valincius, Vilma Snapkauskiene, Viktorija Valinciute, Vladas Mecius, Romualdas Kerzelis
METHODOLOGICAL ASPECTS OF ENERGY SYSTEMS RELIABILITY
ICHMT DIGITAL LIBRARY ONLINE, Vol.0, 1992, issue
Yuri N. Rudenko
Methodological Aspects of Energy Systems Reliability
ICHMT DIGITAL LIBRARY ONLINE, Vol.0, 1992, issue
Yuri N. Rudenko
United States Ceramic Heat Exchanger Technology—Status and Opportunities
ICHMT DIGITAL LIBRARY ONLINE, Vol.19, 1981, issue
V. J. Tennery
ADVANCES IN COMPACT HEAT EXCHANGER TECHNOLOGY AND DESIGN THEORY
International Heat Transfer Conference 7, Vol.1, 1982, issue
R. K. Shah