MAKING LARGE CLOSED CELL-METAL FOAM FOR STRUCTURAL APPLICATIONS.

Saved in:

Bibliographic Details
Title:	MAKING LARGE CLOSED CELL-METAL FOAM FOR STRUCTURAL APPLICATIONS.
Authors:	Paunescu, Lucian¹ lucianpaunescu16@gmail.com, Axinte, Sorin Mircea² sorinaxinte@yahoo.com, Ioana, Adrian³ adyioana@gmail.com
Source:	Nonconventional Technologies Review / Revista de Tehnologii Neconventionale. Mar2026, Vol. 30 Issue 1, p3-9. 7p.
Subjects:	Metal foams, Microwave heating, Compressive strength, Thermal insulation, Structural engineering, Aluminum foam, Additives, Titanium hydride
Abstract:	Commercially recycled aluminum scrap was processed by an own method of melting under the influence of microwaves and atomizing the melt with nitrogen gas jets. Fine aluminum granules together with titanium hydride as an expanding agent and a subsequent addition of very fine alumina powder as a foam stabilizer constituted the materials used to produce large-cell aluminum foam for light structural applications. The material mixture was heated to 753-768 °C in a microwave oven functionally adapted for high temperatures. The use of microwave irradiation of the material allowed to obtain extremely high heating rates (53.4-91.6 °C·min-1) and very short process times. The aluminum foams made in this way had excellent features regarding thermal insulation properties (low values of density and thermal conductivity), a sufficiently high compressive strength and cell size of the foam structure up to almost 2 mm, being suitable for light structural industrial applications. [ABSTRACT FROM AUTHOR]
	Copyright of Nonconventional Technologies Review / Revista de Tehnologii Neconventionale is the property of Asociatia Romana de Tehnologii Neconventionale (ARTN) and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database:	Engineering Source

Description
Abstract:	Commercially recycled aluminum scrap was processed by an own method of melting under the influence of microwaves and atomizing the melt with nitrogen gas jets. Fine aluminum granules together with titanium hydride as an expanding agent and a subsequent addition of very fine alumina powder as a foam stabilizer constituted the materials used to produce large-cell aluminum foam for light structural applications. The material mixture was heated to 753-768 °C in a microwave oven functionally adapted for high temperatures. The use of microwave irradiation of the material allowed to obtain extremely high heating rates (53.4-91.6 °C·min-1) and very short process times. The aluminum foams made in this way had excellent features regarding thermal insulation properties (low values of density and thermal conductivity), a sufficiently high compressive strength and cell size of the foam structure up to almost 2 mm, being suitable for light structural industrial applications. [ABSTRACT FROM AUTHOR]
ISSN:	23598646