Full-ceramic brake systems for high performance friction applications
Full-ceramic brake systems for high performance friction applications
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DOI：
10.1016/j.jeurceramsoc.2016.04.040
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发表时间：
2016-11
影响因子：
5.7
通讯作者：
N. Langhof;M. Rabenstein;Jens Rosenlöcher;Reinhard Hackenschmidt;W. Krenkel;F. Rieg
中科院分区：
文献类型：
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作者：
N. Langhof;M. Rabenstein;Jens Rosenlöcher;Reinhard Hackenschmidt;W. Krenkel;F. Rieg
陶瓷基复合材料（CMC）是用于摩擦应用的有前途的材料。通常，C/SiC 转子与有机垫（低 Met）结合使用。在这项工作中，研究了两种类型的 CMC 刹车片：C/SiC SF 以及以 11 vol.% 焦炭为填料的 C/SiC SF 11Coke，并配有低 Met 参考刹车片。小刹车片 (400 mm2) 应用于实验室规模，大刹车片 (12,000 mm2) 应用于全尺寸惯性测功机。在这两种情况下，相应的转子都是带有富含 SiC 摩擦层的 C/SiC 盘。滑动速度高达 42.6 m/s，制动压力高达 8 MPa。与参考相比，较小的 CMC 垫显示出较低的磨损和较高的摩擦系数 (COF)。这种摩擦行为在全尺寸测功机上得到了证实，平均 COF 高达 0.45。然而，在全尺寸测功机上，大型 C/SiC 垫的磨损要高一些。
Ceramic matrix composites (CMC) are promising materials for friction applications. Typically, C/SiC rotors are combined with organic pads (Low Met). Within this work, two types of CMC brake pads were studied, C/SiC SF as well as C/SiC SF 11Coke with 11 vol.% coke as filler, accompanied with the Low Met reference pads. Small brake pads (400 mm2) were applied on a lab-scale and larger pads (12,000 mm2) on a full-scale inertia dynamometer. In both cases, the corresponding rotor was a C/SiC disc with a SiC-rich friction layer. Sliding speeds up to 42.6 m/s and braking pressures up to 8 MPa were applied. The smaller CMC pads show lower wear and higher coefficient of frictions (COF), compared to the reference. This frictional behavior was confirmed on the full-scale dynamometer with mean COFs up to 0.45. However, the wear of the large C/SiC pads was somewhat higher on the full-scale dynamometer.