Made available in DSpace on 2015-04-14T13:58:45Z (GMT). No. of bitstreams: 1 436188.pdf: 5507987 bytes, checksum: bb7dbc2c844572b613d5bebdeb70d2ae (MD5) Previous issue date: 2011-08-18 / Since the biodiesel national programs began, many research groups have been studied this fuel efficiency, such as economical aspects, environments effects and engine performance and durability. The research objective was project and build a pin-on-disk device test per ASTM G99 95a (Standard Test Method for Wear Testing with a Pin-on-Disk Apparatus) to test material wear under diesel (B5) biodiesel (B100). The project validation was realized by performing aluminum-silicon wear test under two conditions: in presence of diesel (B5) and in presence of biodiesel (B100), with fix speed of 220 rpm, pin load of 5 N and 8 N during 150,000 cycles. The test analysis desired to compare the wear of an alloy used in diesel engines under different solutions. After the wear test, the disc weight loss, the topography and the microstructure were analyzed. The qualitative preliminary result shows better lubricates of biodiesel (B100) to test conditions adopted. / Desde o surgimento dos programas nacionais para a adi??o de biodiesel no diesel, diversos grupos t?m estudado a efic?cia deste combust?vel, abordando aspectos econ?micos, de meio ambiente, desempenho e durabilidade dos motores diesel. O presente trabalho tem o objetivo de projetar, construir e testar um trib?metro para an?lise de materiais submersos em biodiesel e diesel. O equipamento de teste foi desenvolvido tendo como refer?ncia a norma ASTM G99 95a (Standard Test Method for Wear Testing with a Pin-on-Disk Apparatus). A valida??o do projeto se realizou mediante ensaios de desgaste da liga alum?niosil?cio AA305 em duas condi??es: na presen?a de diesel (B5) e na presen?a de biodiesel (B100), com rota??o fixa de 220 rpm, e for?as de 5 N e 8 N durante per?odos de 150.000 ciclos. As an?lises dos dados tiveram como finalidade fazer um comparativo do desgaste da liga em estudo, utilizada em motores diesel, em diferentes solu??es. Ap?s os ensaios foram analisadas as perdas de massa, a topografia do disco e a microestrutura. A an?lise qualitativa das amostras indicou melhor lubricidade do biodiesel (B100) para as condi??es de teste adotadas.