Development and characterization of green automotive brake pads from waste shells of giant African snail (Achatina achatina L.)

In this study, waste shells of African giant snail (Achatina achatina L.) were explored as candidates for asbestos-free non-carcinogenic brake pads. The results obtained showed that the density, Brinell hardness, and compressive strength shell (SS) pads superior to commercial sample used comparison. These properties found decrease with increase in particle size, following a negative index power law model after order Hall-Petch equation. However, liquid absorption characteristics increased size its followed positive due pores matrix. On other hand, thermal conductivity no significant change variation size. SS-based pad exhibited better frictional grip at rubbing interfaces compared sample. From obtained, can be rated Edge-Code-D whereas ratings different sizes are Edge-Code-E (500μm 250μm), Edge-Code-F (375μm), Edge-Code-G (125μm), Edge-Code-H (90μm). wear rates areas developed inferior but improved by impregnating matrix more iron fillings enhance poor hence characteristics.