Specifications

ISSN: 00431648
CODEN: WEARAH
Document type: Journal article (JA)
Publisher: Elsevier Ltd, Langford Lane, Kidlington, Oxford, OX5 1GB, United Kingdom
Abstract: Cf/Mg composites were fabricated by extrusion directly following vacuum pressure
infiltration technique (EVI). Fiber distribution and wear behaviors of the composites were
investigated. For comparison, Cf/Mg composites were also fabricated by squeeze casting as
references. Dry wear tests were carried out at room temperature under a normal load of 100N, at
a sliding velocity of 0.47m/s for sliding distances up to 2000m. Worn surfaces were observed
under SEM to understand wear mechanisms. The results indicated that wear rates of
squeeze-casting composites were higher than those of as-extruded composites (fabricated by
EVI). The main wear mechanisms of the squeeze-casting composite were delamination wear.
Fiber orientation with respect to sliding direction had a remarkable influence on the wear rates.
With fiber orientation paralleled to the sliding direction, the wear rate of composites was higher,
compared with that when fiber orientation inclined to the sliding direction. Correspondingly,
carbon fibers on the worn surface were pulled out and fractured, respectively. The main wear
mechanisms of the as-extruded composites were abrasive wear and fiber fracture. In addition,
partial delaminations were found on the worn surface, when fiber orientation was parallel to the
sliding direction. With fiber orientation perpendicular to the sliding direction, the wear rate of
composites was somewhat lower than that when fiber orientation was parallel to the sliding
direction. © 2013 Elsevier B.V.
Number of references: 25
Main heading: Metallic matrix composites
Controlled terms: Delamination - Electron microscopy - Extrusion - Fabrication -
Fibers - Lunar surface analysis - Metal testing - Squeeze casting - Surface analysis
- Tribology - Vacuum - Wear of materials
Uncontrolled terms: Delamination wear - Fiber distribution - Room temperature -
Sliding direction - Sliding distances - Sliding velocities - Sliding wear - Wear-testing
Classification code: 951 Materials Science - 933 Solid State Physics - 931 Classical
Physics; Quantum Theory; Relativity - 913.4 Manufacturing - 817 Plastics and Other
Polymers: Products and Applications - 812 Ceramics, Refractories and Glass - 801
Chemistry - 633 Vacuum Technology - 535.2.2 Metal Forming Practice - 534.2 Foundry
Practice - 531 Metallurgy and Metallography - 423 Non Mechanical Properties and Tests
of Building Materials - 421 Strength of Building Materials; Mechanical Properties
DOI: 10.1016/j.wear.2013.08.024
Database: Compendex
Compilation and indexing terms, © 2013 Elsevier Inc.
4.
Accession number: 20133916789979
Title: Research on water bank operation mechanism based on the theory of economic behavior
analysis
Authors: Wang, Guang-Yu1 ; Xie, Jian-Cang1 ; Zhang, Jian-Long2 ; Long, Zheng-Wei3/王光宇;解
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