STUDY THE EFFECT OF ADDING A STEEL POWDER ON MECHANICAL AND THERMAL PROPERTIES OF SINTERED (ALUMINA-STEEL) COMPOSITE MATERIAL

Abstract

Alumina is one of ceramic materials that used for the high-performance applications, such as: (chemistry, health, medical, electrical insulator, refractory uses and others). In this study, the carbon-steel powder has been added to Alumina powder with a weight ratio of (1:1). The mechanical property (compressive strength) and thermal conductivity have been investigated experimentally for a composite material sintered at five different temperatures (1100, 1200, 1300, 1400, and 1500)°C. From the results obtained there is an increasing in compressive strength and thermal conductivity of the composite material for temperature range of (1200 to 1400)°C, comparing to pure alumina, in which both compressive strength and thermal conductivity were increasing with sintering temperature , but in values less than for composite. This indicated that adding the metal powder enhances the mechanical and thermal properties for solid state temperature of the two materials.

Keywords

• steel powder
• composite material
• sintering
• compressive strength
• thermal conductivity
• alumina powder