Aluminium alloy metal foams, its use and method for its manufacture

Simple SummaryContent extracted from patent full text and abstract with AI.

This patent introduces a specific aluminium alloy formula (AlMg4±1Si8±1 by weight percent) designed for producing metal foams. The alloy delivers superior performance in terms of pore size uniformity, expansion, mechanical properties, and corrosion resistance compared to existing aluminium foams. The invention also includes ways to manufacture both the foam and sandwich structures (with the foam as the core), using optimized powder metallurgy techniques.

Use CasesContent extracted from patent full text and abstract with AI.

• Lightweight structural panels for automotive, aerospace, and rail industries (e.g. crash energy absorbers, floors, or bulkheads)
• Noise and vibration dampening materials in buildings and vehicles
• Heat exchangers and thermal management systems
• Impact-absorbing components in protective equipment
• Core material in sandwich panels for construction and marine industries

BenefitsContent extracted from patent full text and abstract with AI.

• Achieves fine and uniform pore structure leading to higher mechanical strength and durability
• Offers high expansion ratios and good foam quality
• Improved corrosion resistance and ductility compared to copper-containing alloys
• Process is adaptable for both direct production of foams and integration into sandwich materials
• Reduces risk of gas loss and defects during foaming due to the tailored melting characteristics of the alloy
• Can be manufactured efficiently using powder metallurgy methods, enabling scalable production

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Inventors & Applicants

Patent Abstract

Claimed is an aluminium alloy for use as metal foam with the general formula AlMg4(+1)Si8(+1) % Wt. Further claimed are the use of the aluminium alloy as the core of an aluminium sandwich material and a process for production of the alloy using a suitable mixture of metal powder.