magnesium alloy laser surface texturing

A study on the tribological behavior of surface …

In this study, the performance of surface texturing on nonflat surfaces is numerically investigated. A one-dimensional mixed-lubriion model considering the oil supply is employed. The cases of the nonflat ring lubriion with full and partial texturing are conducted in steady-state and engine-like conditions.

Surface texturing of aluminum alloy 2024 via …

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Surface texturing of aluminum alloy 2024 via …

Excimer laser irradiation has been shown to yield unique results when used to process metallic surfaces. We have investigated surface texturing effects on 2024 aluminum alloy specimens. A pulsed XeCl excimer laser was used to generate irradiation fluences ranging from well below to substantially above the ablation threshold. Our results indie that novel micron-dimensioned surface texturing

Tribological Properties of Laser Surface …

(2010). Tribological Properties of Laser Surface Texturing and Molybdenizing Duplex-Treated Ni-Base Alloy. Tribology Transactions: Vol. 53, No. 2, pp. 195-202.

Laser surface structuring of AZ31 Mg alloy for controlled

Laser surface structuring of AZ31 Mg alloy for controlled wettability Ali G€okhan Demir, a) Valentina Furlan,b) Nora Lecis,c) and Barbara Previtalid) Department of Mechanical Engineering, Politecnico di Milano, Via La Masa 1, 20156 Milan, Italy

Studies on Laser Surface Texturing of Titanium Alloy (Ti

In the present study, a detailed characterization of laser-assisted surface textured titanium alloy (Ti–6Al–4V) has been undertaken. Laser surface texturing with line and dimple geometry has been carried out using ArF excimer laser operating at a wavelength of 193 nm with a pulse length of 5 ns.

Laser surface texturing of copper generates …

Laser surface texturing of copper generates patterns that kill bacteria quickly April 27, 2020 Source: ASM International Engineers from Purdue University, West Lafayette, Ind., report that they have developed a laser treatment method that could potentially turn any metal surface into a rapid bacteria killer – just by giving the metal’s surface a different texture.

Effect of laser surface melting on corrosion and …

Microhardness of the laser surface melted layer was improved to 85-100 VHN as compared to 35 VHN of the as-received MEZ. Pitting corrosion resistance of the laser surface melted MEZ, significantly improved in a 3.56 wt.% NaCl solution because of grain refinement and redistribution of the intermetallic phases following rapid quenching associated with the process.

Surface structure formation in WE54 Mg alloy …

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Laser surface treatment of magnesium alloy with WC and TiC

Laser surface treatment of magnesium alloy with WC and TiC powders using HPDL with alloying elements which may be introduced from either gaseous or solid consumables using a variety of delivery techniques[2, 3, 5-8, 11, 13, 16]. Majumdar et al. [9, 10] have studied magnesium alloys surface …

Friction Properties of Laser Surface Texturing …

The surface texture were ablated by Nd: YAG pulse laser The textured alloy surface were molybdenized. The friction and wear properties of duplex-treated and single-treated alloys alumina at the temperature range from room temperature to 600°C. The topography of laser surface textured alloy was observed by three dimensional profiler and optical

15 Types of Surface Treatment Techniques (For …

Texturing. Texturing is realized by chemical osmosis, resulting in a variety of patterns on the surface of metal products, such as: stripes, images, wood, leather, and satin. It also includes a sandblasting procedure that directly sprays the glass sand onto the surface of the metal article. Features after texturing treatment:

Magnesium alloy - Wikipedia

Magnesium alloys are mixtures of magnesium with other metals (called an alloy), often aluminum, zinc, manganese, silicon, copper, rare earths and zirconium.Magnesium is the lightest structural metal. Magnesium alloys have a hexagonal lattice structure, which affects the fundamental properties of these alloys. Plastic deformation of the hexagonal lattice is more complied than in cubic

Synergistic Effect of Superhydrophobicity and …

02.09.2015· The method is based on nanosecond laser treatment of the surface followed by chemisorption of a hydrophobic agent to achieve the superhydrophobic state of the alloy surface. We have shown that the surface texturing used to fabrie multimodal roughness of the surface may be simultaneously used for modifying the physicochemical properties of the thick surface layer of the …

Corrosion Protection and Surface Treatment of …

An overview is reported about the history of prevailing magnesium alloys as orthopedic biodegradable materials. Important features of the effect of alloying additions, along with surface treatments for corrosion protection of magnesium alloys, are described. Hydroxyapatite (HA), the promising coat deposited by different direct and electrochemical methods to tailor corrosion resistance and

Surface Modifiion of Magnesium Alloy by …

Magnesium alloy has a wide range of appliion prospects in the automobile and electronic industries. However, peeling of the coating material may occur under harsh environments such as high and low temperatures and high humidity with the conventional coating techniques. The authors have proposed a lining process of metals with thin aluminium foils using shot peening.

Preparation and Wetting Behavior of …

Superdrophobic surfaces on 8 magnesium alloy substrate were self-asseled monolayers deposited on texturing surface.The surface after laser manufacturing and self-asseled monolayers preparation.Rough structure of substrate by laser manufacturing and low surface energy material FDTS self-asseled monolayers are the

Effects of coined treatment of plasma …

13.03.2019· Laser surface texturing (LST) Additionally, the oxide film cannot be formed on the surface of titanium alloy in the vacuum environment. The grinding ball and titanium alloy matrix are easy to contact directly, resulting in severe adhesive wear and plastic deformation in the process of …

LASER SURFACE PROCESSING OF MAGNESIUM ALLOYS

LASER SURFACE PROCESSING OF MAGNESIUM ALLOYS Surface structure formation mechanism in WE54 alloy subjected to ultrafast texturing. Castagne Sylvie, Wang , Zheng Hongyu, Laser surface melting of rare earth Mg alloys to improve degradation resistance, (IFMM’15&IFBF’15 conference proceedings), 2015

The Effect of Textured Surfaces with Different …

In this study, four kinds of roughness structures were constructed on the Al alloy surface using laser marking technology. The tribological properties of the surfaces under the condition of dry

Preparation and Properties of Graphene/Nickel Composite

magnesium alloy surface by laser coined with electrochemical deposition. After 3.5 wt% NaCl electrochemical test, it was found that the coating had a certain corrosion resistance, and its corrosion potential increased by more than 0.2 V. Thus far, however, there has been little discussion about duplex treatments of surface modifiion-

Towards Laser-Textured Antibacterial Surfaces | …

04.07.2018· Surface structures comprising spikes, laser-induced periodic surface structures (LIPSS) and nano-pillars are produced with 1030 nm wavelength 350 fs laser …

Quadri-directionally anisotropic droplets sliding …

A periodic array patterned superhydrophobic surface consisted of asymmetric multi-directional stairway units was prepared by selective laser texturing of aluminum alloy plate, which was endowed for the first time with the quadri-directionally anisotropic droplets sliding characteristic.

IET Digital Library: Influence of laser surface …

An aluminium alloy surface with a microgroove array was fabried via laser processing, and exhibited superhydrophobicity. The as-prepared surface showed excellent anti-adhesion properties and potential self-cleaning behaviour. The wettability of the fabried surface was investigated by measurement of the water contact angle. The surface morphology and chemical composition were

Surface texturing of Ti6Al4V alloy using femtosecond laser

Surface texturing of Ti6Al4V alloy using femtosecond laser for superior antibacterial performance Shazia Shaikh1, Sunita Kedia 1,*, Deepti Singh2, 3, Mahesh Subramanian 2, 3, Sucharita Sinha1 1 Laser & Plasma Surface Processing Section, Bhabha Atomic Research Centre, Muai 400085 India. 2 Bio-Organic Division, Bhabha Atomic Research Centre, Muai 400085 India.

Influence of Laser Surface Melting on the …

In the present study, surface melting of a magnesium alloy, ZE41 (4%-Zn, 1%-RE) is performed by an Nd:YAG laser (operating in a continuous wave mode). The degree of microstructural refinement and the depth of the laser melted zone is a strong function of laser processing parameters (laser power, beam diameter, scan rate). The corrosion properties of the laser treated and untreated zone is

Narendra Dahotre | Materials Science and …

Prof. Narendra B. Dahotre of materials science and engineering, established the Laboratory of Laser Aided Additive and Subtractive Manufacturing (LAASM) at the University of North Texas (Denton, Texas).The state-of-the-art research facility houses multiple high-power infrared laser systems. These lasers are specifically designed and configured for efficient, reliable, cost-effective, precise