The role and impacts of surface engineering in environmental design

James, A.S.; Thomas, Ken; Mann, P.; Wall, Ryan

doi:10.1016/j.matdes.2004.08.011

Cited by 9 publications

(6 citation statements)

References 13 publications

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“…With relevant developments in the fields of aerospace, energy and biomedical industries. The surface modification based on texturing processes is mainly employed for enhancing physic-chemical properties of the substrate material [1][2][3][4][5][6][7][8]. This kind of techniques represents an essential tool to improve the functional performance of specific alloys in working environments, through the variation of specific features as wetting or tribological behavior [9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

“…On one hand, the laser system can be adapted to a wide range of parameters for the texturing process, become a more flexible tool than machining operations for surface modification operations. These kinds of treatments, based on laser irradiation under air atmosphere, are usually performed without lubricants or coolant fluids, being environmentally friendly regarding chemical and conventional machining [2,[27][28][29].…”

Section: Introductionmentioning

confidence: 99%

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Assessment the Sliding Wear Behavior of Laser Microtexturing Ti6Al4V under Wet Conditions

et al. 2019

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Laser micro-texturing processes, compared to untreated surfaces, can improve the friction, wear and wettability behavior of sliding parts. This improvement is related to the micro-geometry and the dimensions of the texture which is also dependent on the processing parameters. This research studied the effect of laser textured surfaces on the tribological behavior of titanium alloy Ti6Al4V. The influence of processing parameters was analyzed by changing the scanning speed of the beam and the energy density of pulse. First, the characterization of dimensional and geometrical features of the texturized tracks was carried out. Later, their influence on the wetting behavior was also evaluated through contact angle measurements using water as a contact fluid. Then, the tribological performance of these surfaces was analyzed using a ball-on-flat reciprocating tribometer under wet and dry conditions. Finally, wear mechanisms were identified employing electronic and optical microscopy techniques capable to evaluate the wear tracks on Ti surfaces and WC–Co spheres. These analyses had determined a strong dependence between the wear behavior and the laser patterning parameters. Wear friction effects were reduced by up to a 70% replacing conventional untreated surfaces of Ti6Al4V alloy with laser textured surfaces.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Assessment the Sliding Wear Behavior of Laser Microtexturing Ti6Al4V under Wet Conditions

et al. 2019

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“…Therefore, LST is considered as a viable process for surface engineering, contributing to the development of the functionalization of components [4]. It also contributes to the development of sustainable manufacturing by means of an environmentally friendly process in comparison to chemical and conventional machining [5,6].…”

Section: Introductionmentioning

confidence: 99%

Nanosecond Pulsed Laser Irradiation of Titanium Alloy Substrate: Effects of Periodic Patterned Topography on the Optical Properties of Colorizing Surfaces

2019

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Most of the current works based on surface treatments of metals by laser marking technology are focused on the modification of the color tonality of flat surfaces, or the development of specific topography features, but the combination of both processes is not usually evaluated, mainly due to the complexity of controlling the optical properties on rough surfaces. This research presents an analysis of the influence of the micro-geometrical characteristics of periodic patterned laser tracks on the chromaticity and reflectance of Ti6Al4V substrates. The samples were irradiated with an infrared nanosecond pulsed laser in air atmosphere, taking as the control parameter the scan speed of the beam. A roughness evaluation, microscopic inspection, and absorption and chromaticity examination were conducted. Although micro-crack growth was detected in an isolated case (10 mm/s), the possibility of adjusting the result color was demonstrated by controlling the heat-affected zone thickness of the textures. The results of rough/colored combined textures allow new perspectives in industrial design to open, particularly in aesthetic applications with special properties.

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“…Surface modification procedures, especially thermo-chemical treatments, allow variations in the microstructure and composition of the initial surface of the alloy, developing layers with specific properties and characteristics. According to [ 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 ], these changes can improve the surface integrity of the alloy, increasing the functional features in order to adapt the material to the requirements of the current industry.…”

Section: Introductionmentioning

confidence: 99%

“…However, mainly due to current environmental restrictions, reduction of the fluids used is among the main objectives of most fields of the industry. In this regard, the study of surface treatments aimed at reducing the effects of wear shows great importance in improving the friction wear behavior of materials [ 5 , 26 ]. Due to the impossibility of maintaining control over a large number of variables in the cutting and forming processes, the study of behavior under wear and friction conditions is usually carried out by tribological tests designed to reproduce the conditions of the material in controlled sliding wear situations.…”

Section: Introductionmentioning

confidence: 99%

Sliding Wear Behavior of UNS R56400 Titanium Alloy Samples Thermally Oxidized by Laser

et al. 2017

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Wear of elements subjected to friction and sliding is among the main causes of low tribological performance and short lifetime of strategic materials such as titanium alloys. These types of alloys are widely used in different areas such as aerospace and the biomechanics industry. In this sense, surface modification treatments allow for the overcoming of limitations and improvement of features and properties. In the case of titanium alloys, improvements in the main weaknesses of these materials can be obtained. Laser texturing of UNS R56400 (Ti6Al4V) alloy, according to Unified Numbering System designation, surface layers in a non-protective atmosphere produces an increase of the oxides, especially of titanium dioxide (TiO2) species. The presence of oxides in the alloy results in color tonality variations as well as hardness increases. In addition, specific roughness topographies may be produced by the track of laser beam irradiation. In this research, thermochemical oxidation of UNS R56400 alloy has been developed through laser texturing, using scan speed of the beam (Vs) as the process control variable, and its influence on the sliding wear behavior was analyzed. For this purpose, using pin on disc tribological tests, wear was evaluated from the friction coefficient, and wear mechanisms involved in the process were analyzed. Combined studies of wear mechanisms and the friction coefficient verified that by means of specific surface treatments, an increase in the wear resistance of this type of alloys is generated. The most advantageous results for the improvement of tribological behavior have been detected in textured surfaces using a Vs of 150 mm/s, resulting in a decrease in the friction coefficient values by approximately 20%.

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The role and impacts of surface engineering in environmental design

Cited by 9 publications

References 13 publications

Assessment the Sliding Wear Behavior of Laser Microtexturing Ti6Al4V under Wet Conditions

Assessment the Sliding Wear Behavior of Laser Microtexturing Ti6Al4V under Wet Conditions

Nanosecond Pulsed Laser Irradiation of Titanium Alloy Substrate: Effects of Periodic Patterned Topography on the Optical Properties of Colorizing Surfaces

Sliding Wear Behavior of UNS R56400 Titanium Alloy Samples Thermally Oxidized by Laser

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