Angelo Perrone
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View article: Optimization of Hydrogen Utilization and Process Efficiency in the Direct Reduction of Iron Oxide Pellets: A Comprehensive Analysis of Processing Parameters and Pellet Composition
Optimization of Hydrogen Utilization and Process Efficiency in the Direct Reduction of Iron Oxide Pellets: A Comprehensive Analysis of Processing Parameters and Pellet Composition Open
The article deals with the H 2 consumption for different processing conditions and the composition of the processed pellets during the direct reduction process. The experiments are carried out at 600–1300 °C, with gas pressures of 1–5 bar,…
View article: Carburization Behavior of High-Grade Pellets After Direct Reduction in Pure Hydrogen
Carburization Behavior of High-Grade Pellets After Direct Reduction in Pure Hydrogen Open
Carburization is a critical aspect in the iron and steel industry as it significantly affects the mechanical and chemical properties of the final product. This study provides a comprehensive analysis of the carburization potential of high-…
View article: Modelling of hydrogen diffusion leading to embrittlement in austenitic stainless steels
Modelling of hydrogen diffusion leading to embrittlement in austenitic stainless steels Open
The paper presents the 3-D model of the hydrogen diffusion in austenitic stainless steel. In order to model the material behaviour, a real microstructure taking into account the grain boundaries, the dislocations density, the vacancies num…
View article: Optimizing ball milling parameters for controlling the internal microstructure and tensile characteristics of a laminated carbon nanotube/aluminum–copper–magnesium composite
Optimizing ball milling parameters for controlling the internal microstructure and tensile characteristics of a laminated carbon nanotube/aluminum–copper–magnesium composite Open
This research investigates how different ball milling conditions influence the microstructure and mechanical properties of carbon nanotube/aluminum alloys. The study examines varying rotation speeds, specifically 200, 300, and 400 rpm. The…
Direct reduction of pellets through hydrogen: Experimental and model behaviour Open
This paper presents the hydrogen reduction behaviour of industrial pellets designed for the efficient hydrogen based direct reduction. The pellets were provided with very low non ferrous oxides percentage (0.52 of basicity index) and with …
Optimization of the Si<sub>3</sub>N<sub>4</sub> coating formation through plasma spraying on Inconel 738 Open
In the present study, the deposition of silicon nitride (Si 3 N 4 ) coating on Inconel 738 through plasma spray has been investigated. For producing the Si 3 N 4 coating, different times (6, 8 and 10 s), different distances of the plasma s…
View article: Modelling of the hydrogen embrittlement in austenitic stainless steels
Modelling of the hydrogen embrittlement in austenitic stainless steels Open
The paper shows the 3D model of hydrogen diffusion in austenitic stainless steel. To model the behaviour of the material a real microstructure of grain boundaries, of dislocation density, of number of vacancy and the states of precipitates…
Hydrogen‐Based Direct Reduction of Iron Oxides Pellets Modeling Open
The present study deals with the analyses of the direct reduction kinetics during the hydrogen reduction of industrial iron oxide pellets. Various types of pellets with different percentage of total iron content and metal oxides are examin…
Critical analysis of variable atmosphere gaseous reduction of iron oxides pellets Open
The paper deals with the analyses of the direct reduction kinetics of industrial iron oxide pellets. Various types of pellets were reduced at different temperatures and pressure (700–1100°C and 1–6 bar) in various atmospheres with differen…
Influence of the Tool Rotational Speed on Physical and Chemical Properties of Dissimilar Friction-Stir-Welded AA5083/AA6060 Joints Open
Aluminum alloys have been successfully used in the railroad and automotive industries because of their potential to significantly reduce component weights, and their good mechanical and anti-corrosion properties. Problems with joining alum…
Fatigue Bending of V-Notched Cold-Sprayed FeCoCrNiMn Coatings Open
Cold-spray coatings were produced by FeCoCrNiMn high-entropy alloy powders deposited on carbon steel substrate. The coatings were realized at intermediate temperature and high pressure (at 1100 °C and 7 MPa). The coating microstructure was…
Growth Mechanism and Kinetics of Siliconizing of AISI D2 Tool Steel Open
The present paper goes into details of the kinetics of silicide layer growth on AISI D2 during surface siliconizing. Pack cementation was employed in order to siliconize the steel surface. Siliconizing was conducted by using powder mixture…
Crack Initiation and Growth Behavior of HVOF Stellite-6 Coatings under Bending Loading Open
Stellite-6 powders were sprayed on Ni-Al bronze in order to produce coatings via high-velocity oxygen fuel (HVOF). The microstructural observations revealed the main mechanisms taking place for the substrate–coating adhesion. It was reveal…
Pack Siliconizing Optimization of AISI D2 Tool Steel Open
The paper describes the pack siliconizing optimization procedure for AISI D2 tool steel. Pack siliconizing was performed by employing different treating temperatures (falling in the range 650–950 °C) and times (falling in the range 2–4 h).…
Integration of Open Slag Bath Furnace with Direct Reduction Reactors for New-Generation Steelmaking Open
The present paper illustrates an innovative steel processing route developed by employing hydrogen direct reduced pellets and an open slag bath furnace. The paper illustrates the direct reduction reactor employing hydrogen as reductant on …
Water Electrolysis for the Production of Hydrogen to Be Employed in the Ironmaking and Steelmaking Industry Open
The way to decarbonization will be characterized by the huge production of hydrogen through sustainable routes. Thus, the basic production way is water electrolysis sustained by renewable energy sources allowing for obtaining “green hydrog…