02127cam a2200337 a 4500 EG-GiCUC 20250223032719.0 210325s2020 ua dho f m 000 0 eng d EG-GiCUC eng EG-GiCUC eng Deposite M.Sc Cai01.13.13.M.Sc.2020.Al.I Alshaimaa Ahmed Mohammed Ali Investigation of copper matrix by powder metallurgy technology for the manufacture of brake pads / Alshaimaa Ahmed Mohammed Ali ; Supervised Abdelhalim Mohamed Abdelhalim , Omayma Abdelgawad Elkady دراسة المواد المركبة من النحاس لتصنيع لقم الفرامل Cairo : Alshaimaa Ahmed Mohammed Ali , 2020 110 P . : charts , facsmilies , photographs ; 30cm Thesis (M.Sc.) - Cairo University - Faculty of Engineering - Department of Mechanical Design and Production This investigation pays attention to Cu-composite, which is formed from Cu matrix reinforced with graphite and iron. To demonstrate efficiency and increase the life time of copper matrix for brake pads, the graphite is to be added to Cu matrix with different amounts that are 0, 2, 6, and 12 wt. %. Microstructure by SEM, morphology XRD analysis, relative density, hardness, wear resistance and CTE of the sintered composites were investigated. The results show that the best relative density is 6wt. %Gr (97.31%) with hardness 105.3HV. The compressive strength increases with increasing graphite to 6%, and it decreases with increasing graphite by 12% in Cu matrix. The wear weight loss of S3,S4 and S5 specimens decreases with increasing graphite in Cu matrix. CTE decreases by increasing graphite to 6wt.% Issued also as CD Brake Pads Cu-Matrix Graphite Abdelhalim Mohamed Abdelhalim , Supervisor Omayma Abdel Gawad Elkady , Supervisor http://172.23.153.220/th.pdf Amira Cataloger Nazla Revisor ddc TH 80359 80359 ddc 0 CUCL cl210 2024-02-11 Cai01.13.13.M.Sc.2020.Al.I 01010110083100000 2023-09-22 00:00:00 TH ddc 0 CUCL cl2u8 2024-02-11 Cai01.13.13.M.Sc.2020.Al.I 01020110083100000 2023-09-22 00:00:00 83100.CD CD