Casquilhos à base de prata para aplicação em motores veiculares à combustão interna.

Abstract

The objective of this research was to develop a new alloy silver-based bushings for internal combustion engines, applied in bearings hydrodynamically supported. Thus, theoretical frameworks were articulated for provide a better understanding of alloys, mechanical tests for characterization of silver alloys with copper, lead and tin. These provided comparative to determine which had the best performance as antifriction alloy. Among the analyzed alloys that outperformed the silver was 995 (99.5 % silver with 0.5 copper). Although silver 995 present higher cost, gain efficiency compared to currently used materials and minimize impacts to humans and the environment, outweigh and justify their application and use.