Combined surface hardening and laser patterning approach for functionalising stainless steel surfaces

Nanosecond Laser Surface Patterning of Bio Grade 316L Stainless Steel for Controlling its Wettability Characteristics

In this work, potential of the nanosecond laser processing technique on manipulating the surface wettability of 316L bio grade stainless steel is investigated. Results show that the steel wettability toward water, improves significantly after the laser treatment. Different analyses are assessed in correlation with wettability using Scanning Electron Microscope (SEM), Scanning Tunneling Microsco...

Characterization of a Laser Surface-Treated Martensitic Stainless Steel

Laser surface treatment was carried out on AISI 416 machinable martensitic stainless steel containing 0.225 wt.% sulfur. Nd:YAG laser with a 2.2-KW continuous wave was used. The aim was to compare the physical and chemical properties achieved by this type of selective surface treatment with those achieved by the conventional treatment. Laser power of different values (700 and 1000 W) with four ...

Evaluating Wear Properties of AISI 420 Martensitic Stainless Steel after Laser Transformation Hardening

As the turbine industries need to manufacture turbine blades made of martensitic stainless steel AISI 420 with high toughness and wear resistance, local laser hardening has become more and more important. In this research, surface of the samples was initially hardened by high-power pulsed laser beam; then, optimum parameters of hardening were calculated and wear resistance of surface hardened s...

Adsorption of Proteins on Stainless Steel Surfaces

Understanding adsorption phenomena on stainless steel surfaces is of important because stainless steel is widely used from food and dairy to pharmaceutical industries. Protein adsorption and fouling undermines the efficiency of stainless steel process equipments and leads to an increase in operational costs due to regular cleaning. For this reason, adsorption of milk proteins on stainless steel...

Chemical Surface Treatment of Stainless Steel