SIFAT MEKANIK BAHAN GESEK REM KOMPOSIT DIPERKUAT SERAT BAMBU
(1) Jurusan Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Negeri Semarang (UNNES), Semarang, Indonesia
(2) Jurusan Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Negeri Semarang (UNNES), Semarang, Indonesia
(3) Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Negeri Semarang (UNNES), Semarang, Indonesia
Abstract
Bahan gesek komposit diperkuat serat bambu untuk kampas rem otomotif dibuat menggunakan mesin pres isostatik panas pada 19oC selama 3 jam. Jumlah serat bambu dan serbuk logam di dalam pencampuran dioptimasi, setiap komposisi komponen lain dibuat tetap, pengaruhnya pada sifat-sifat mekanik dan struktur mikro diselidiki. Serat bambu disini digunakan sebagai pengganti serat asbes yang jumlahnya divariasi antara 2,86-17,14% dari volume total dan fraksi berat masing-masing unsur penyusun ditentukan menggunakan energy dispersive X-ray spectroscopy. Angka kekerasan Brinell, kekuatan tarik maksimum, dan ketahanan aus khas bahan gesek yang difabrikasi berada pada rentang 21,7-43,4 kg/mm2, 0,021-0,036 ton, dan 1,5exp-11-5,2exp-11 m2/N.
Friction materials of bamboo fibers reinforced composites for automotive brakes were made using hot isostatic pressing machine at 190oC for 3 hours. The contents of bamboo fiber and metal powder in the mixing were optimized, each composition of other components was fixed, its effects on mechanical properties and microstructure were investigated. Bamboo fibers were used here as substitutes for asbestos fibers whose number varied between 2.86 to 17.14% of the total volume and weight fraction of each constituent element is determined using energy dispersive X-ray spectroscopy. Brinell hardness number, the maximum tensile strength and specific wear resistance of friction materials fabricated in the ranges of 21.7 to 43.4 kg/mm2, 0.021 to 0.036 tons, and 1.5 exp-11-5, 2exp-11 m2 / N, respectively.
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