Enhancing The Corrosion Resistance Of Metals By Laser Processing

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Journal of Power Sources - Western University

In addition to enhancing the corrosion resistance of stainless steel, a graphene coating also ameliorates another shortcoming of stainless steel in a corrosive environment:the formation of a passive oxidation layer on the stainless steel surface that decreases conductivity. Aftera corrosion test, the graphene-covered stainless steel continued

Steel with IceFyre® Picosecond Laser for Enhanced Material

its combination of high strength, corrosion resistance, and bacterial resistance. In automobile manufacturing, laser drilling of fuel injector nozzles is a large and growing application, particularly for ultrafast lasers. It is also used extensively in medical device manufacturing where lasers are used for cutting, drilling and marking.

Coils of hot-rolled black on process - JDM Steel Service

Modern Metals® April 2007 coilprocessing BY SUE ROBERTS Smoothing out Smooth clean steel surfaces in Chicago the process Coils of hot-rolled black on the in-feed of JDM s SCS line are transformed to clean, rust-resistant steel on the out-feed. I t s an educational process. You have to work with a customer in his plant to try this new

SURFACE TREATMENTS BY LASER TECHNOLOGY

ations that are mainly related to enhancing one of the surface dependent properties, like hardness, friction, fatigue and resistance to wear, corrosion, etc. The steady development of high power lasers and their suitability to be introduced in production lines has encouraged the industrial application of laser sur- face treatments.

Applied Surface Science

novel laser-based surface processing technology, laser shock peening (LSP), is promising to improve the en-gineering performance of Mg alloys by enhancing their surface strength, biocompatibility, fatigue resistance, and anti-corrosion ability. Despite these experimental efforts, little attention has been paid to study the surface

ENHANCEMENT IN THE GROWTH OF TEXTURED HFCVD DIAMOND COATINGS

metal or alloy substrates [1-6]. This process is important for enhancing the durability of widely used metals and alloys by providing a coating of extreme hardness, strength, corrosion resistance, and a low coefficient of friction [7-9]. However, high quality

Laser surface melting of 304 stainless J steel for pitting

that manipulate pitting corrosion resistance. Figure 1 shows the relationships between Laser surface melting of 304 stainless steel for pitting corrosion resistance improvement by T.S. Seleka* and S.L. Pityana* Synopsis Laser surface melting has been conducted on a 304 stainless steel (SS) with the aim of enhancing pitting corrosion resistance

A Review of the As-Built SLM Ti-6Al-4V Mechanical Properties

high strength, corrosion resistance, high fracture toughness and light weight. Additive manufacturing (AM) is an attractive method of Ti-6Al-4V parts fabrication, as it provides a low waste alternative for complex geometries. With continued progress being made in SLM technology, the influence of

Enhancing the antibacterial performance of orthopaedic

wear and corrosion resistance of implant materials. In this study, the effects of laser surface treatment on enhancing the antibacterial properties of commercially pure (CP) Ti (Grade 2), Ti6Al4V (Grade 5) and CoCrMo alloy implant materials were studied and compared for the first time. Laser sur-face

INNovAToRS IN TEcHNoLoGy Metal Improvement Company Laser peening

the material and the processing conditions. This deep level of compressive stress creates a damage tolerant layer and a barrier to crack initiation and growth, which consequently enhances the fatigue lifetime and provides resistance to stress corrosion cracking and fretting fatigue. Multiple firings of the laser in a pre-defined

High Thermal Conductivity Coatings via LENS for Thermal

During laser processing the material s laser absorptivity plays a special role, because it controls the energy input from the laser to the sample. The laser absorption coefficient of the material is directly proportional to its electrical resistance and inversely proportional to the wavelength of the laser [13].

THE INFLUENCE OF SCANNING SPEED ON THE LASER METAL DEPOSITION

improving its wear resistance, medical biocompatibility, corrosion and oxidation resistance.5 Several processing parameters such as laser power, scanning speed, powder rate, or gas flow rate are im-portant during LMD.6,7 However, the efficiency of the LMD process is affected by the processing parameters

Laser Peening Process and Its Impact on Materials Properties

applied on welded joints in order to reduce welding residual stresses thereby enhancing the fatigue life [19,31,32]. Furthermore, the physics and mechanism of UIP/UIT has been addressed [19,34,35]. The applications of the LSP include improvement of fatigue life, stress corrosion cracking/corrosion resistance and wear resistance [42 44].

Laser-Assisted Cold-Sprayed Corrosion- and Wear-Resistant

emphasis on the wear- and corrosion-resistant alloyed powders by exploring the available literature on LACS process. In addition, studies dwelling mainly on cold spray, powder metallurgy (P/M), and laser material processing techniques (laser machining, texturing, and ablation) will also be employed to highlight the roles of process and

A Preliminary Study to Enhance the Tribological Performance

Laser remelting is an effective approach to modify the surface structure and properties of metallic materials, such as roughness, hardness and corrosion resistance [29,30]. It is commonly employed as a post-process treatment for enhancing the homogeneity in microstructure and reducing the porosity in the surface layer [31 34].

Enhancing the mechanical and biological performance of a

stir processing (FSP), accumulative roll bonding (ARB), etc.16 19 Surface nanocrystallization through SPD can be achieved by processes such as wire brushing and rotating pin ultrasonic peening.20 SPD processes also improve corrosion resistance, and mechanical properties including strength and fatigue besides enhancing the biological response.

Development of a Co-Cr-Mo to Tantalum Transition using LENS

corrosion resistance and can act as excellent intermediate surfaces. Trillo [4] (et al.) have shown that Titanium and Tantalum form excellent solid solutions having properties comparable to that of Ti-6Al-4V. Also they have reported excellent hardness values. This strengthens the belief that these metals can be used as intermediate

Influence of Cu Content on Microstructure and Corrosion

FCAW metals would enhance the mechanical properties and the corrosion resistance. The element Cu has been well recognized to boost the corrosion resistance. For instance, the addition of Cu into the ferritic, austenitic or duplex steels can positively affect the corrosion resistance in the sulfuric acid [11].

Synergistic Effect of Superhydrophobicity and Oxidized Layers

coating is subjected to corrosion processes due to the formation of defects. In contrast, the combination of an oxide layer with good barrier properties and the superhydrophobic state of the coating provides remarkable corrosion resistance. The mechanisms for enhancing corrosion protective properties are discussed.

The effects of argon ion bombardment on the corrosion

corrosion resistance of metals. At the Naval Research Laboratory, for example, there has been an extensive program aimed at improving corrosion resistance using the techniques of ion bombardment, ion beam mixing, and ion beam-assisted deposition, as well as laser surface processing and alloying [12]. It is well known that aqueous corrosion proceeds

HEAT TREATMENT OF AUTOMOTIVE COMPONENTS: CURRENT STATUS AND

metal processing may include forming, machining as well as quench and tempering, carburizing and hardening and nitriding during production. Surface modification, when properly applied, yields optimum surface properties enhancing corrosion and wear resistance while improving frictional properties. 2. MATERIALS USED IN AUTOVEHICLES

LASER SURFACE MELTING OF 304 STAINLESS STEEL FOR PITTING

In the last two decades, laser treatment of metals has emerged as a novel surface modification technique [2, 3]. It has been proved that laser surface melting (LSM) or alloying (LSA) is a valuable method to improve wear and corrosion resistance of many metals and alloys. In LSA, the desired alloying elements can be introduced into

Short- and Long-Term Wettability Evolution and Corrosion

Sep 19, 2019 Corrosion Resistance of Uncoated and Polymer-Coated Laser-Textured Steel Surface Marjetka Conradi 1,*, Tina Sever 1, Peter Gregorciˇ cˇ 2 and Aleksandra Kocijan 1 1 Institute of metals and technology, Lepi pot 11, 1000 Ljubljana, Slovenia; [email protected] (T.S.); [email protected] (A.K.)

Plasma Processing and Ion Implantation - EOLSS

Plasma processing of the metal surface in the glow discharge is one the most commonly encountered methods for improving the mechanical and tribological properties of surfaces, as well as enhancing corrosion resistance. Plasma nitriding, carbidizing, boronizing, and titanizing of metals and alloys are all processes widely used by industry.

MIC Services Innovators In technology engineered l Company

l laser peening induces deeper residual compressive stresses l engineered coatings improves performance, prevents corrosion and aids lubricity l C.A.S.e. (isotropic finishing) removes surface asperities reducing friction l On-site processing provides services on customers own premises l Peentex (architectural finishing)

The Use of Selective Laser Melting to Increase the

and corrosion resistance (compared to steels). The most wide-spread aluminum alloys are based on the binary Al-Si system, which provides great castability, and thus an easy production way. Elements like Mg or Cu are often added to enhance mechanical properties after an appropriate heat treatment [1].

CHARACTERIZATION AND PREDICTION OF TEXTURE IN LASER ANNEALED

The use of a homogenized laser source and mask imaging to melt thin films allows for precise control over the induced melt depth and temperature profile. The small absorption depth of UV light in metals causes the overwhelming majority of the laser energy to be absorbed by the film rather than the substrate. At sufficient laser intensities,

UHVLQILOP - iopscience.iop.org

Jun 11, 2020 corrosion resistance of organoclay/polyurethane film O Kurniawan and B Soegijono-Increasing corrosion resistance of carbon steels by surface laser cladding V I Polsky, V L Yakushin, P S Dzhumaev et al.-Study on possibility for the improvement of corrosion resistance of metals using laser-formed oxide surface structure J S Ruzankina and O S

An overview of laser surface engineering activities in India

The Indian Institute of Technology (IIT) at Kharagpur has an active group interested in laser materials processing and has made signiÞcant contributions in the area of laser surface engineering (LSE) to enhance resistance to wear, corrosion and oxidation of commercially important metals and alloys.

Medical mCONNECT

most corrosion resistance based on open circuit potential testing. Fracture occurs through the via, proving the bond is stronger than the parent material.¹ Technology Overview mCONNECT s High Temperature Co-Fired Ceramic (HTCC) focuses on monolithic construction of a feedthrough using a multi-layer ceramic processing and co-fire

On the interactions of human bone cells with Ti6Al4V

Laser shock processing, also known as laser peen-ing (LP), is an innovative surface processing technol-ogy in which metallic surfaces are irradiated with short and intensive laser pulses. Irradiation by high power laser pulses induces high pressure plasma, of the order of gigapascals, which produces high amplitude shock waves.

IMPROVE TI ALLOYS PROPERTIES AND PERFORMANCE A

of these metals. New effective heat treatment and thermochemical processing methods are vital to achieve these goals, as many tra-ditional technologies fall short due to processing limitations. Titanium is one of the most promising metals, with low den-sity (40% less than steel), excellent mechanical properties, corrosion resistance, and high

Technical Synopsis of the NUCLEAR SYSTEMS AND MATERIALS CREI

In the proposed CREI we will investigate the corrosion resistance of the steel in its initial state and after modification by HTPP in ampoules (in sodium and lead) and in lead flow at temperatures up to 700°C and at fixed oxygen concentrations in liquid metals, which addresses a fundamental concern of high-temperature reactors.

Special Alloys - VNE Stainless

corrosion resistance. PREN = % Cr + 3.3% Mo + 30% N If these filler metals are used, the weldment will have pitting and crevice corrosion resistance about equal to that of the parent metal. PREN - Pitting Resistance Equivalent Number MaxCore 6Mo (UNS#N08367) 2507 254SMO 904L 2205 316L 45.89 43.82 43.33 35.85 34.14 27.05 MaxCore Maximum

Special Alloys - egmo.co.il

Corrosion Resistance MaxCore prodcuts contains high percentage molybdenum which increases the resistance to localized corrosion in the forms of pitting and crevice corrosion. The higher the molybdenum content, the better the corrosion resistance to higher chloride levels by enhancing the passive film, making it stronger and helping it to re-form

Keep Em Flying - Laser Peening - LSP

Laser peening produces a number of beneficial effects in metals and alloys. Foremost among these is increasing the resistance of materials to surface-related failures, such as fatigue, fretting fatigue and stress corrosion cracking. Numerous metals and alloys have been laser peened successfully, including titanium