Effect of whisker orientation on the friction and wear behaviour of Al2O3/TiB2/SiCω composites in sliding wear tests and in machining processes

Abstract Gas atomized Al63Cu25Fe12 powders of varying size fractions were plasma sprayed to study the relationships between coating microstructure and tribological behavior. After spraying, annealing was performed on one of the coatings. Abrasion and sliding wear tests were performed on the coatings. The results indicate a correlation between the abrasion resistance and hardness of the coatings. Furthermore, sliding wear tests reveal lower coefficients of friction for the as-sprayed coatings compared to the annealed coatings.

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Effect of Processing Parameters on the Wear Behaviour of Sintered Iron and Steam Oxidized Sintered Iron in Reciprocating Sliding Wear Tests

World Tribology Congress III, Volume 1 ◽

10.1115/wtc2005-63483 ◽

2005 ◽

Author(s):

A. C. Bozzi ◽

J. D. B. De Mello

Keyword(s):

Wear Mechanisms ◽

Sliding Wear ◽

Processing Parameters ◽

Steam Oxidation ◽

Wear Behaviour ◽

Wear Volume ◽

Sintered Iron ◽

Reciprocating Sliding ◽

Wear Tests ◽

Reciprocating Sliding Wear

In spite of the extensive use of sintered iron-based components in sliding situations, there are very few studies about their wear behaviour. In this paper, the effect of processing parameters on the wear behaviour of sintered iron and steam oxidized sintered iron were analyzed. Three levels of density were used, ranging from 7.10 to 6.55 g/cm3. In addition, two different steam oxidation processes were used with the objective of obtaining different types of surface oxides. Reciprocating sliding wear tests in a ball on flat geometry were performed under a constant stroke and frequency. Three levels of normal load were used. Wear was evaluated in terms of the volume loss by using data of surface topography provided by a 3D laser interferometer. The wear mechanisms were analyzed by scanning electron microscopy. The wear behaviour of the specimens was compared and analyzed in terms of the wear volume and wear mechanisms. The results show that wear behaviour is influenced mainly by the load level and steam oxidation. Steam oxidation greatly decreased the wear volume of these materials under low and medium loads.

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Wear Behaviour of Thermal Spray Welded FeNi and CeO2 Composite Coatings

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.194-196.363 ◽

2011 ◽

Vol 194-196 ◽

pp. 363-366

Author(s):

Bu Nv Liang ◽

Biao Chen ◽

Zhen Yu Zhang ◽

Peng Lin Zhang

Keyword(s):

Sliding Wear ◽

Steel Substrate ◽

Composite Coatings ◽

Wear Behaviour ◽

Flame Spray ◽

Dry Conditions ◽

Weight Loss Method ◽

Loss Method ◽

Wear Tests ◽

Feni Alloy

FeNi alloy powders with and without 0.4 % CeO2were flame spray welded onto 1045 carbon steel substrate. Vickers microhardness profiles of the coatings were carried out. Sliding wear tests in dry conditions were carried out by means of weight-loss method for several applications in oil industries. For this purpose, Ni-based alloy and high chrome cast iron were used as compared materials. A scanning electron microscope(SEM) was used to analyze the wear phenomena of samples. The result showed that the hardness of the coatings can be improved by addition of 0. 4 % CeO2, and the anti-adhesion, anti-scratching, and plastic deformation resistance abilities of coatings are increased with the addition of CeO2.

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Friction and wear behaviors of Sialon–Si3N4 graded nano-composite ceramic materials in sliding wear tests and in cutting processes

Wear ◽

10.1016/j.wear.2012.05.020 ◽

2012 ◽

Vol 290-291 ◽

pp. 41-50 ◽

Cited By ~ 15

Author(s):

Guangming Zheng ◽

Jun Zhao ◽

Yonghui Zhou

Keyword(s):

Sliding Wear ◽

Friction And Wear ◽

Composite Ceramic ◽

Ceramic Materials ◽

Nano Composite ◽

Composite Ceramic Materials ◽

Cutting Processes ◽

Wear Tests

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Friction and Wear Behaviors of Al2O3 Based Ceramic Tool Materials at Temperatures up to 800°C

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.148-149.908 ◽

2011 ◽

Vol 148-149 ◽

pp. 908-913 ◽

Cited By ~ 1

Author(s):

Hui Zhang ◽

Jian Xin Deng ◽

Yun Song Lian

Keyword(s):

Friction Coefficient ◽

Sliding Wear ◽

Friction And Wear ◽

Ceramic Tool ◽

Surface Features ◽

Wear Rates ◽

Tool Materials ◽

The Difference ◽

Worn Surface ◽

Wear Tests

The friction and wear behaviors of Al2O3/TiC ceramic tool materials were evaluated at temperature up to 800°C. The friction coefficient and wear rates were measured. The microstructural changes and the wear surface features were examined. Results showed that the temperature had an important effect on the friction and wear behaviors of Al2O3/TiC ceramics. The friction coefficient decreased with the increase of temperature, while the wear rates increased with the increase of temperature. The difference of the worn surface features of the Al2O3/TiC ceramics at different temperature is related to the chemical transformation during sliding wear tests. The wear mechanism of the composites at temperature less than 400°C was primary abrasive wear, and the mechanisms of oxidative wear dominated in the case of 800 °C sliding operation.

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