This special edition presents research and development results in important areas of materials science that could be applied in various industries. The first chapter explores the techniques behind brazing, a versatile joining process essential for creating strong, leak-proof joints in complex assemblies. This chapter discusses microstructural aspects of brazing stainless steels for high-temperature applications and analyses the effectiveness of micro-welding through direct and indirect heating from a view of sustainability. Chapter 2, Corrosion Protection delves into techniques and materials that defend against corrosion, which is important for providing infrastructure longevity and safety. The analysis of corrosion inhibition performance on carbon steel in seawater using synthesised bio extract and properties of a zinc multifaceted layered barrier coating are presented here. Chapter 3, Catalysts and Catalytic Processes focuses on catalysts and specific features of various catalytic processes, their role in accelerating chemical reactions, and, ultimately, improving the efficiency of chemical production. Chapter 4, titled Computational Methods in Materials Science, contains articles exploring the microstructure, optic, photovoltaics properties, etc., of various materials, using numerical simulations and computational methods. By providing tools to develop and predict materials' behaviour and properties, computational methods enable research to be conducted faster and more precisely. This special edition can become a useful referential resource for many specialists in materials science and engineering.

Preface ⅵ

Sustainability of Microwelding through Direct and Indirect Heating 3

Microstructural Aspects on Brazing Stainless Steels for High Temperature Applications 9

Mechanical and Structural Investigation of Zn-MnO_2 Coating on Mildsteel 21

Predictive Modeling and Adsorption Behavior, Kinetics, and Thermodynamic Studies of Anthocleista Grandiflora Leaf Extract for Corrosion Inhibition of Carbon Steel in Seawater 33

Conversion Single Reagent of n-Propanol to 1,1-Dipropoxypropane Using Cr/Activated Carbon Catalyst 55

Oxidative Desulfurization of Dibenzothiophene Using Catalyst of NiO Impregnated on Magnetic Silica Sand from Parangtritis Beach 63

An Effective Synthesis of Phosphated Silica (PO_4/SiO_2) Catalyst and its Performance for Converting Ethanol into Diethyl Ether (DEE) 77

Nickel Oxide-Impregnated Phosphated Silica Catalyst: Synthesis and Application for Ethanol Dehydration into Diethyl Ether (DEE) 87

Temperature Distribution in a Two-Scale Porous Structure of a Catalyst Made of Spherical Particles 99

Impact of Electric Field and Biaxial Strain on the Structural, Phonon, and Optical Features of Bulk and Monolayer Potassium Nitride 121

Thickness and Doping Density Influence of a High-Voltage Inorganic Perovskite Solar Cell: A SCAPS 1-D Simulation Study 137

Same Same but Different - Definition and Explicit Notation of an Orientation in Mtex vs. Quasi-Standard 151

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