Results 71 to 80 of about 2,687 (227)

Effect of C2H2/H2 Gas Mixture Ratio in Direct Low-Temperature Vacuum Carburization

open access: yesMetals, 2018
The effect of the acetylene and hydrogen gases mixture ratios in direct low-temperature vacuum carburization was investigated. The gas ratio is an important parameter for producing free radicals in carburization.
Yeongha Song   +4 more
doaj   +1 more source

Auto‐Generated Valence States in Electrocatalysts for Boosting Oxygen and Hydrogen Evolution Kinetics in Alkaline Water/Alkaline Seawater/Simulated Seawater/Natural Seawater

open access: yesAdvanced Functional Materials, Volume 36, Issue 45, 5 June 2026.
This review systematically highlights the latest achievements in mixed‐valence states relevant to hydrogen and oxygen evolution reactions, providing essential insights into future directions and methods for large‐scale practical implementation. This critical review is expected to provide an overview of recent advancements in diverse valence‐state metal
Jitendra N. Tiwari   +4 more
wiley   +1 more source

In Situ Embedded FeSiB Nanocrystals in Amorphous Matrix With MOF‐Derived Porous Carbon for Enhanced Electromagnetic Wave Absorption

open access: yesRare Metals, Volume 45, Issue 6, June 2026.
ABSTRACT Because magnetic permeability is an intrinsic property of materials, achieving the regulation of magnetic loss is one of the challenges for electromagnetic wave absorption materials. This paper focuses on the research idea of in situ growth of dispersed nanocrystalline FeSiB in an amorphous FeSiB matrix to regulate magnetic properties.
Lei Wang   +4 more
wiley   +1 more source

The Study of Heat Treatment Effects on Chromium Carbide Precipitation of 35Cr-45Ni-Nb Alloy for Repairing Furnace Tubes

open access: yesMetals, 2016
This paper presents a specific kind of failure in ethylene pyrolysis furnace tubes. It considers the case in which the tubes made of 35Cr-45Ni-Nb high temperature alloy failed to carburization, causing creep damage.
Nakarin Srisuwan   +4 more
doaj   +1 more source

Interaction between Molten Al‐Killed Mn–B Steel and Carbon‐Bonded MgO Refractories Based on Recyclates

open access: yesAdvanced Engineering Materials, Volume 28, Issue 10, 20 May 2026.
High‐temperature interactions between low‐sulfur Al‐killed Mn–B steel and MgO–C refractories (0 and 50 wt% recyclates) are studied via finger immersion tests (1600 °C). Surface‐active elements influence infiltration. MgO/CaS layer forms, along with spinel and calcium silicate.
Matheus Roberto Bellé   +5 more
wiley   +1 more source

Simultaneous oxidation and carburization under oxyfuel conditions

open access: yes, 2010
The combustion of coal in CO2-reduced Oxyfuel power plants requires creep resistant and corrosion resistant materials, which can withstand high temperatures up to 600°C and CO2 rich atmospheres.
Hünert, Daniela   +2 more
core  

Population of Nonmetallic Inclusions in Liquid High‐Silicon Electrical Steel in Contact With MgO–C Refractories Based on Recyclates and Environmentally Friendly Binders

open access: yesAdvanced Engineering Materials, Volume 28, Issue 10, 20 May 2026.
The formation of nonmetallic inclusions (NMIs) was investigated in this study, carrying out immersion tests for 30 min at a temperature of 1600°C with liquid high‐silicon electrical steel (Si ≈ 3 mass‐%) and different MgO–C refractories. Conventional MgO–C refractories were considered, as well as MgO–C refractories containing MgO–C recyclate and ...
Lukas Neubert   +6 more
wiley   +1 more source

Carburization of steels-An overview

open access: yes, 1994
221-228A high carbon upper layer is produced by diffusing carbon and the carburized steel is used in gears, crankshafts where high ware and tare occurs.
Prasannan, P C
core  

CARBURIZATION MECHANISM OF HIGH CHROMIUM ALLOYS.

open access: yes, 1984
A major mode of corrosive degradation of alloys at high temperatures is carburization. In high chromium alloys, this type of attack is characterized by the diffusion of carbon into the alloy followed by the precipitation of chromium rich carbide phases ...
Ramanarayanan, T. A., Srolovitz, D. J.
core  

The Synergy of the Surface Layer after Carburizing of Tool Steel as a Measure of Operational Quality [PDF]

open access: yesMetalurgija, 2007
In the paper the results of the investigation on surface layer of carburized X150CrMoV12-1 tool steel are presented. Abrasive wearing of the surface was determined according the ASTM G77-98 method.
Wencel, Z.   +3 more
doaj  

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