Study ou wear resistance and microstructure of nanosilica-iron based composites.

• 主要作者: Zainuddin, Abu Yazid
• 格式: Final Year Project
• 語言: English
• 出版: Universiti Teknologi PETRONAS 2011
• 主題: TJ Mechanical engineering and machinery
• 在線閱讀: http://utpedia.utp.edu.my/10388/1/2011%20-%20Study%20on%20Wear%20Resistance%20of%20Nanosilica-Iron%20Based%20Composites.pdf; http://utpedia.utp.edu.my/10388/

When a machine is in operation, two moving surfaces interact to generate a large amount of wear particle. Abrasive wear of engineering machine components caused by the abrasive particle is the major industrial problem. In materials science, wear is the erosion of material from a solid surfuce by the action of another surfuce. It is related to surfuce interactions and more specifically the removal of material from a surfuce as a result of mechanical action. Wear caused by the presence of abrasive particles is influenced by their size, concentration, shape, hardness, and sliding velocities. The objective of this report is to study on wear resistance ofNanosilica-iron based composites. The studies of this project are aim to research about the differential percentage of nanosilica addition to the pure iron with different sintered temperatures and focus on physical and mechanical properties of nanosilica-iron based composite, several tests will be conducted to the samples, which include density measurement, hardness test and wear resistance. Currently, iron based silica sand nanoparticles composites 5, 10, 15 and 20 wt.% of nanoparticles silica and were developed through powder metallurgy technique and sintered at 900c, 1 OOOc and 11 OOc. So to determined which composition are better regarding to the sintered temperature value wiii be test by using hardness test and wear resistance test. The results show that the addition of silica sand nanoparticles to iron enhanced the hardness and wear resistance with increasing the sintered temperature and silica sandnanoparticles. An improvement in sintered densities was also observed with increasing trend of sintering temperatures. An optimum value of20wt.% of silica sand nanoparticles in iron based composites was found to have best micro hardness values and wear resistance for all sintering temperatures.