مريم عباسي

Friction an‎d wear are undesirable in most engineering applications, but in brake pad composite, although wear is inevitable, friction is necessary an‎d achieving a suitable an‎d stable friction coefficient is the concern of many engineers in this field. In this research, 3 compounds were presented as compounds containing 5% by weight of black iron oxide, red iron oxide an‎d yellow iron oxide, an‎d one compound with 5% by weight of barite (substitute for iron oxide) was presented as simple compound. The purity percentage of raw materials used in the research by X-ray fluorescence (XRF) an‎d X-ray energy diffraction spectroscopy (EDX) an‎d to study the morphology of raw materials by scanning electron microscope (SEM) an‎d field emission scanning electron microscope (FE_SEM) was used an‎d also to check the thermal stability of cellulosic fibers, the thermal thermometric test (TGA) was used. The results showed that the sample containing 5% by weight of black iron oxide showed the best performance among other compounds in terms of friction properties. The frictional performance of the presented composites was eva‎luated by the wear test on a laboratory scale based on the SAE J 661 stan‎dard. After performing the functional test, the wear surfaces were studied by scanning electron microscope (SEM). The study of wear surfaces showed that the sample containing black iron oxide performed better in forming contact plates an‎d a more stable friction film an‎d led to better friction results than other compounds. The ability to form a stable friction film on the contact surfaces plays an important role in controlling the wear rate an‎d reducing it.

لنت ترمز , اكسيد آهن , تريبولوژي , مواد اصطكاكي

Brake pad , iron oxide , tribology , friction materials

Maryam Abbasi

Alireza Khavandi