کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1658917 1008363 2010 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preparation and tribological properties of thin oxide coatings on an Al383/SiO2 metallic matrix composite
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Preparation and tribological properties of thin oxide coatings on an Al383/SiO2 metallic matrix composite
چکیده انگلیسی

A new Al383/SiO2 metal matrix composites (MMC) was designed to improve the wear properties of the aluminium (Al) alloys with manufacturing cost much lower than the hypereutectic Al–Si alloys. However, like the hypereutectic Al alloys, the MMC was also subject to large plastic deformation of the soft Al matrix under high contact stress during lubricated sliding wear tests. As a result, the reinforced SiO2 particles detached from the matrix and promoted the third-body wear. In this paper, to improve the wear performance of the MMC under high contact stress but also to avoid the honing process, a new proprietary approach based on a modified Plasma Electrolytic Oxidation (PEO) process was used to produce oxide coatings on the MMC. The effect of both oxide coating thickness and the volume content of SiO2 particles on the wear behaviour of the MMC was investigated. It was found that with a proper combination of the volume content of SiO2 and coating thickness, the coated MMC presented a much higher wear resistance and lower friction coefficient than the uncoated MMC.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 205, Issue 6, 15 December 2010, Pages 1689–1696
نویسندگان
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