Application of metal hydrides as pore-forming agents for obtaining metal foams

Anfilov, N. V.; Кuznetsov, Alexandr; Berezhko, P. G.; Tarasova, A. I.; Tsareva, I. A.; Mokrushin, V. V.; Tsarev, M. V.; Malkov, I. L.

doi:10.1016/j.jallcom.2015.01.153

Cited by 7 publications

(2 citation statements)

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“…Judging from expression (4)(5)(6)(7)(8), with the decrease of pore size, the liquid films thin faster and are easier to rupture. Thus if the main role of increasing melt viscosity in stabilizing foam is to prevent liquid films from thinning and rupture, the viscosity required to stabilize foam with smaller pore size is correspondingly higher.…”

Section: Discussionmentioning

confidence: 99%

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Optimizing Calcium Addition for Fabricating Aluminum Foams with Different Pore Sizes

Cheng

Chen

et al. 2018

Mater. Trans.

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This study mainly investigated the influence of Calcium (Ca) addition on the pore size of aluminum foams made by using CuTiH 2 composite powder as foaming agent. The Ca addition required for fabricating aluminum foams with different pore sizes was experimentally investigated. Two possible foam stabilization mechanisms were discussed and compared. For foams with pore size about 3 mm, the optimized Ca addition is 1 mass%. For foams with pore size about 2 mm, the optimized Ca addition is 3 mass%³5 mass%. The main role of increasing melt viscosity in stabilizing foams is to prevent liquid films from thinning and rupture, rather than to prevent bubbles floating and escaping from the melt surface.

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Section: Discussionmentioning

confidence: 99%

“…Titanium hydride (TiH 2 ) powder is most frequently used as foaming agent. 6) In addition to the foaming agent, another important parameter is the melt's viscosity. It has been shown by several studies 79) that appropriate melt viscosity is a key factor for obtaining stable foams with uniform pore structure.…”

Section: Introductionmentioning

confidence: 99%