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Several different experimental techniques are normally used to evaluate tribological properties of thin hard coatings. However, most of the tests cannot assess properties of coating, substrate and interface independently. In this study, the potential of a Micro-Slurry-jet Erosion (MSE) test to swiftly evaluate the intrinsic wear properties of thin single layered and multilayered coatings is demonstrated...
In this paper, it is proposed to use a new type of solid particle impact test (slurry jet) to swiftly evaluate wear properties of thin, single layered or multilayered coatings. By the slurry jet, 1.2μm alumina particles were impacted at high velocity perpendicular to thin PVD coatings of TiN deposited on high speed steel substrate materials under various substrate temperatures. Since the coatings...
Effects of reinforcements on the wear behavior of aluminum matrix composites were investigated by pin-on-disk tests. The matrix materials were 2024 and ADC12 aluminum alloys. The volume fractions of SiC whiskers (V fw ) were 5-29% (MMC w ), Al 2 O 3 fibers (V ff ) were 3-26% (MMC f ), and SiC particles (V fp ) were 2-10% (MMC ...
For the evaluation of tribological properties of thin hard coatings, several experimental techniques are normally used, such as scratch testing and testing against abrasive, erosive, and sliding wear, and fretting. In this paper, we propose slurry jet, a new type of solid particle impact test, in order to quickly evaluate wear properties of thin, single layered or multilayered physical vapor deposited...
In order to study the slurry wear properties of elastomeric lining materials for sand, sludge and sewage pumps, several tests were carried out under various test conditions with a slurry jet device and prototype pump. Preliminary tests were done with 13 materials including polymers, metals and ceramic coatings. Polyurethane, fluid elastomer and rubber showed good wear resistance compared with the...
The wear behaviour of high tensile strength aluminium alloys was studied by rubbing them against a steel counterface under both dry and lubricated conditions. The test materials used were extruded Al Zn Mg alloy (7004-T6) and Al Cu Mg alloy (2024-T4). In laboratory air, the mild wear rates of both aluminium alloys were almost the same. However, 7004-T6 easily caused severe wear at high contact...
In order to study the relation between impact load by collapsing cavitation bubbles and erosion damage, a new pressure detector which can measure impact loads and erosion damage (size of indents or pits and volume loss) simultaneously was developed. The detector consisting of a test specimen with a diameter of 3 mm and a piezoelectric ceramic disk was used for venturi tests and vibratory tests. Impact...
Wear properties of SiC whisker-reinforced 2024 aluminum alloys (designated as SiCw-Al) with volume fraction of whiskers (V f ) ranging from 0 to 16% produced by a powder metallurgy technique were investigated by pin-on-disk tests under dry conditions. The test materials of a disk were rubbed against a 0.45% carbon steel counterface pin at 40 N and 0.1 m s -1 The severe to mild...
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