Optimization of a Semimetallic Friction Material Formulation
| Autor: | Maurice A. Wright, Choong-Fong Tang, Yafei Lu, Yongli Zhao |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Materials science
Polymers and Plastics Mechanical Engineering Steel wool 02 engineering and technology Tribology 021001 nanoscience & nanotechnology Brass 020303 mechanical engineering & transports 0203 mechanical engineering Natural rubber Mechanics of Materials visual_art Phase (matter) Volume fraction Materials Chemistry Ceramics and Composites visual_art.visual_art_medium Graphite Composite material 0210 nano-technology Nitrile rubber |
| Zdroj: | Journal of Reinforced Plastics and Composites. 23:1537-1545 |
| ISSN: | 1530-7964 0731-6844 |
| Popis: | A semimetallic friction material formulation consisting of Al2O3,B2O3, brass chips, graphite, NBR (nitrile rubber), steel wool, and benzoxazine (a ring-opening polymerized phenolic) with high friction coefficient ( μ) and low wear was developed using the Golden Section approach to search the optimal volume fraction of each ingredient in the formulations. All raw materials used were divided into three groups: fibers, fillers, and binder. The volume fraction of each ingredient in the formulations was calculated by means of V i = 0.618 n in phase 1, V j = V i ± V i × r m/ V F and V j = V i ± V i × r m/ V f in phase 2 and V j = V i ± V i × r m/( V F + V f) in phase 3. Two exponent equations, w = k0 V1 k1 V2 k2 … V p kp and μ = m0 V1 m1 V2 m2 … V p mp, were proposed to correlate the compositional dependence of wear and μ. The least-squares error method was utilized to calculate the effect of each ingredient on and wear. Experimental and calculated results proved that both brass chips and B2O3 play important roles in enhancing. After doing 18 formulation experiments that preformed using Friction Assessment and Screening Test (FAST), an optimized formulation (BB-17) with high μ (average μ = 0.701) and low wear ( w = 4.74%) was obtained. |
| Databáze: | OpenAIRE |
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