Powder Metal Al Foams: Production, Types and Usage Areas

Yıl 2024, ERKEN GÖRÜNÜM, 1 - 1

Mehmet Türker

https://doi.org/10.2339/politeknik.1463820

Öz

Metallic foams, which have been extensively studied recently, are combinations of substances in gas and solid state with a porous structure of between 40% and 90%. Due to its low density and high energy absorption properties, it comes to the fore in the automotive industry, as well as in the space and defense industry. Metallic foams, which have unique properties, are materials with high strength, low thermal conductivity and high energy absorption capacity, despite their high porosity rate. Foam materials have become attractive to vehicle designers due to their lightness and energy absorbing properties, and they aim to minimize the damage that may occur in the vehicle during a collision. In addition, in today's world where energy and environment issues are important, reducing vehicle weight will reduce fuel consumption and increase efficiency while minimizing the damage to the environment. In this article, after giving general information about closed-pore Al-based metallic foam materials produced by the powder metallurgy method, detailed information is given about reinforced and unreinforced foam production, sandwich foam production, spherical foam production and metallic foam-filled profile production, which are special production methods. Additionally, general information is given about the construction of integral armor material, which is a new application, and other general applications.

Anahtar Kelimeler

Powder Metal Al foam, Production methods, Integral armor material, Usage areas

Toz Metal Al Köpükler: Üretimi, Çeşitleri ve Kullanım Alanları

Öz

Son zamanlarda üzerinde yoğun çalışmalar yapılan metalik köpükler %40 ila %90 arasında gözenekli yapıya sahip, gaz ve katı halde bulunan maddelerin bileşimidir. Düşük yoğunluk ve yüksek enerji sönümleme özelliklerinden dolayı başta otomotiv sektörü olmak üzere uzay ve savunma sanayinde ön plana çıkmaktadır. Benzersiz özelliklere sahip olan metalik köpükler yüksek gözeneklilik oranına rağmen, yüksek mukavemet, düşük ısıl iletkenlik ve yüksek enerji emme kapasitesine sahip malzemelerdir. Köpük malzemeler hafif olmalarının yanısıra enerji sönümleme özelliğinden dolayı, araç tasarımcıları için cazip hale gelmiş ve çarpışma sırasında araçta meydana gelebilecek hasarın minimuma indirmesi amaçlanmıştır. Ayrıca enerji ve çevre konusunun önemli olduğu günümüzde araç ağırlığının azaltılması, yakıt tüketimini azalmasına ve aynı zamanda verimliliğin artırmasına sebep olurken çevreye verilen zararı da en aza indirecektir. Bu makalede toz metalurjisi yöntemi ile üretilen kapalı gözenekli Al esaslı metalik köpük malzemeler hakkında genel bilgi verildikten sonra, özel üretim yöntemlerinden takviyeli ve takviyesiz köpük üretimi, sandviç köpük üretimi, küresel köpük üretimi ve metalik köpük dolu profil üretimi hakkında geniş bilgi verilmiştir. Ayrıca yeni bir uygulama olan, integral zırh malzemesi yapımı ve diğer uygulamalar hakkında genel bilgi verilmiştir.

Anahtar Kelimeler

Toz metal Al Köpükler, Üretim Yöntemleri, İntegral zırh malzemesi

Kaynakça

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