الفهرس 
AcknowledgementOnly 14 pages are availabe for public view
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Abstract
Tin- antimony based alloys are one of common and widely used materials in bearing such as automotive, flyer and marines industrial applications. The purpose of this work was to improve physical properties of tin- antimony based alloys by : Adding different alloying elements (Bi or Cu or Al or Pb or Zn or Ag) to Sn87Sb13 alloy Adding different ratio from Al (5%- 20 %) to Sn87Sb13 alloy and reach to free Sb alloy (Sn80Al20 ) Adding different ratio from TiO2 nanoparticles (0.5- 1.5%) to Sn- Sb10Pb3 and Sn80Al20 alloys To verify these aims we do the following-:.1 Melt spinning technique was used to prepare Sn87Sb13 alloy with adding different alloying elements (Bior Cu or Al or Pb or Zn or Ag), Sn87-xSb13Alx (x= 5, 10, 15 and 20%) alloys, Sn80Al20 alloy and Sn Sb10Pb3(Ti2O)x and Sn80Al20(Ti2O)x (x=0.5, 1 and 1.5%) alloys.2 Studying and analyzing structure, electrical resistivity, elastic modulus and internal friction, Vickers hardness, thermal properties and electrochemical corrosion behavior of these alloys using different experimental techniques x-ray diffraction, scanning electron microscope, double bridge method, dynamic resonance technique, Vickers microhardness tester instrument and Gamry Instrument from this studying it’s obvious that: alloy consists of β- Sn and a few SbSn intermetallic phases. Adding different alloying elements (Bi or Cu or Al or Pb or Zn or Ag), different ratio of Al to Sn87Sb13 alloy caused a change in future formed phases and matrix microstructure. Also adding TiO2 nanoparticles to Sn87Sb10Pb3 and Sn80Al20 alloys caused a change in future formed phases and matrix microstructure .2.Elastic modulus, internal friction, Vickers hardness, electrical resistivity, thermal parameters and corrosion rate of SnSb13 alloy varied after adding Bi or Cu or Al or Pb or Zn or Ag contents3.Elastic modulus and melting temperature of SnSb13 alloy decreased after adding Al content up to 15 wt.% and then increased at 20 wt%.4.Vickers hardness value of SnSb13 alloy increased after adding Al content 5.Elastic modulus and Vickers hardness of Sn87Sb10Pb3 alloy increased after adding different ratio from TiO2 nanoparticles 6.Elastic modulus and internal friction values of Sn80Al20 alloy increased after adding different ratio from TiO2 nanoparticles from our work it’s concluded that-:1.We can improve physical properties of Sn- Sb based bearing alloy by adding different alloying elements and TiO2 nanoparticles 2.The Sn85. 5Sb10Pb3(TiO2)1.5 and Sn78.5Al20(TiO2).1.5 alloys have better bearing properties such as high elastic modulus, high Vickers hardness and low internal friction for industrial applications.