SEARCH RESULT

Aluminium (Al) and its alloys have been widely used in engineering applications due to their lightweight, relatively high-strength. Metallic materials especially aluminum and their alloys have been widely used in automobile, aerospace, space and electronics due to their lightweight and relatively high-strength. However, the development of higher mechanical properties is needed in these areas. In general, the composite form of these materials by using fibers or particulate enhances these properties [1-2]. Also, in these applications Al and Al alloys and their composite form are fabricated with expensive powder metallurgy route. Therefore, the alternative fabrication methods such as casting of Al, Al alloys and their composites from waste beverage cans are needed [3- 4].

International Symposium on Light Alloys and Composite Materials
UHAKS

Özgür Yılmaz Mevlüt Gürbüz

Hydroxyapatite (HaP), which contains calcium and phosphate as natural bone, has been widely used in orthopedic for dense and porous bone applications due to its superior osteoconductivity and biocompatibility [1]. As a result of recent advances in biomaterial applications, HaP based artificial bones, which has similar composition and mechanical properties with real bones, has been developed [2]. Although there are lots of studies that achieve good mechanical properties, these studies do not provide sufficient strength. Therefore, we need to fabricate unique HaP composites. In recent years, graphene nanoplates (GNPs) are the most popular reinforcement material for metal and ceramic matrix composites because of its extraordinary properties and biocompatibility [3- 4].

International Symposium on Light Alloys and Composite Materials
UHAKS

Mevlüt Gürbüz Onur Yontar

Aluminum matrix composites are widely used in automotive, aviation and aeronautics industry due to their high strength, good stiffness, low density, good thermal and electrical properties. Developments of these composites with unique reinforcements are essential to enhance the composite properties. In recent years, graphene nanoplatelets (GNPs) and its ceramic combinations such as silicon carbide (SiC) and silicon nitride (Si3N4) have been rarely preferred to fabricate high-performance aluminum composites. In this study, binary SiC/graphene and Si3N4/graphene reinforced aluminum composites were fabricated by powder metallurgy method for various reinforcement content. From the results, the hardness of the composites has been increased by graphene and its ceramic combinations. While pure Al and Al-0.15%GNPs composite hardness were reported as nearly 52 and 56 in our previous studies, in this study the highest hardness has been measured as 85.2 HV and 82.01 HV for Al30%SiC-0.5%GNPs and Al-9%Si3N4-0.5%GNPs respectively.

International Conference of Advanced Materials and Manufacturing Technologies
ICAMT

Mevlüt Gürbüz Mahmut Can Senel Erdem Koc

Magnesium and its alloys have been widely used in automobile, aerospace, space, electronics and sports industries due to its light weights and relatively high-strength. However, we need higher mechanical properties in applications. It is known that composites of magnesium and its alloys with fibers or particulate increases the properties. Graphene is the one of this material, and it is preferred in these days because of its superior mechanical, electrical and conductive properties. In this study, graphene reinforced magnesium matrix composites were fabricated with powder metallurgy. Density and hardness of these composites were measured. The crystal structure and microstructure of the composites were observed by scanning electron microscopy (SEM) and X-ray diffraction (XRD). From the results, the density and hardness were increased with graphene addition to magnesium.

International Conference of Advanced Materials and Manufacturing Technologies
ICAMT

Emine Ozlem Dengiz Mevlüt Gürbüz