Premium
Friction of a C/SiC Composite Bearing in Air and in Combustion Environments
Author(s) -
Zhang Yani,
Zhang Litong,
Cheng Laifei,
Luan Xingang,
Chen Bo,
Liu Chidong
Publication year - 2009
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/j.1744-7402.2008.02277.x
Subject(s) - materials science , composite material , chemical vapor infiltration , composite number , silicon carbide , combustion , bearing (navigation) , hinge , ceramic matrix composite , scanning electron microscope , contact mechanics , oxide , coating , surface roughness , normal force , surface finish , structural engineering , finite element method , metallurgy , chemistry , physics , cartography , organic chemistry , mechanics , engineering , geography
A bearing used for the load‐carrying hinge was manufactured based on a carbon fiber‐reinforced silicon carbide matrix (C/SiC) composite with a SiC coating. Chemical vapor infiltration was applied in the process of the composites. Experiments were conducted by an experimental simulation method that would facilitate testing under coupling stress in air and in combustion environments. Modeling analysis deduced the relationship of applied load, normal contact force, and friction force in the hinge bearing. Friction behavior was comparatively investigated up to 10 kN at room temperature in air and at 1800°C in combustion environments. Worn surfaces were observed by scanning electron microscopy, and surface roughness was measured by atomic force microscopy. Reliable thermal load‐carrying ability and stable friction performance of the hinge bearing are demonstrated under this testing framework. The oxide products in the combustion environment play an important role in reducing friction by providing a reaction layer to moderate the contact stresses.