Production of aluminium–fly ash particulate composite by powder metallurgy technique using boric acid as foaming agent

Körpe, Neşe Öztürk; Ozkan, Ercan; Tasci, Ugur

doi:10.1080/2374068x.2016.1254004

Cited by 6 publications

(1 citation statement)

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“…For example, novel blowing agents such as boric acid were recently used during the 'sintering' (not melting) of aluminum and aluminum-alumina composites, resulting in porosity levels of 46-53%, when 50 wt.% boric acid was added [34]. Similar work also considered sintering using the same blowing agent with aluminum-fly ash particulate-aluminum composites [52], or aluminum-cubic boron nitride [53], while CaCO 3 was used as a blowing agent for copper foams [35]. It should be noted that the gas release onset temperature of boric acid is considerably lower than those of blowing agents used in the PCMFP, where metal melting rather than solid-state sintering is the goal.…”

Section: Common Blowing Agents Used In Pcmfpmentioning

confidence: 99%

Review: Closed-Cell Metallic Foams Produced via Powder Metallurgy

Behymer,

Morsi

2023

Metals

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The production of closed-cell metallic foams has been of interest to the scientific community and industry for decades, owing to their unique properties, which include high specific strength and stiffness, buoyancy, shock absorption, and crash worthiness. One of the approaches for their fabrication relies solely on the use of powders and is manifested in what has been referred to as the powder metallurgy (PM) route. This review discusses the underlying fundamentals of the process, and recent developments together with our current understanding. The effect of process parameters on the developed foam structure is reviewed for a range of metals, alloys, and metal matrix composites. Fundamental foaming mechanisms and characteristics are discussed.

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