Articles with "base metal" as a keyword



Ultrafast Two‐Color X‐Ray Emission Spectroscopy Reveals Excited State Landscape in a Base Metal Dyad

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Published in 2024 at "Advanced Science"

DOI: 10.1002/advs.202404348

Abstract: Effective photoinduced charge transfer makes molecular bimetallic assemblies attractive for applications as active light‐induced proton reduction systems. Developing competitive base metal dyads is mandatory for a more sustainable future. However, the electron transfer mechanisms from… read more here.

Keywords: spectroscopy; base metal; ray emission;

Base‐Metal‐Catalyzed Oxidative Cross‐Couplings Between 2‐Naphthols and Phenols or Arylamines

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Published in 2025 at "Asian Journal of Organic Chemistry"

DOI: 10.1002/ajoc.202500367

Abstract: An unprecedented base‐metal‐catalyzed oxidative cross‐coupling between 2‐naphthols and phenols or arylamines has been described in this report. Acetic acid and 2,2,6,6‐tetramethylpiperidine‐1‐oxyl (TEMPO) are the crucial oxidative system that promotes the transformation under aerobic conditions with… read more here.

Keywords: catalyzed oxidative; metal catalyzed; base metal; naphthols phenols ... See more keywords

The case for metamorphic base metal mineralization: pyrite chemical, Cu and S isotope data from the Cu-Zn deposit at Kupferberg in Bavaria, Germany

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Published in 2017 at "Mineralium Deposita"

DOI: 10.1007/s00126-017-0714-z

Abstract: The stratiform Cu-Zn sulfide deposit at Kupferberg in Germany represents Bavaria’s largest historic base metal producer. The deposit is hosted by Early Paleozoic volcano-sedimentary strata at the margin of a high-grade allochthonous metamorphic complex. The… read more here.

Keywords: isotope data; deposit; deposit kupferberg; mineralization ... See more keywords
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Biological versus geochemical control and environmental change drivers of the base metal budgets of a tropical montane forest in Ecuador during 15 years

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Published in 2017 at "Biogeochemistry"

DOI: 10.1007/s10533-017-0386-x

Abstract: To assess the susceptibility of the base metal budget of a remote tropical montane forest in Ecuador to environmental change, we determined the extent of biological control of base metal fluxes and explored the impact… read more here.

Keywords: forest ecuador; tropical montane; montane forest; base ... See more keywords

Picking up the Pieces: Intercultural Interaction in the Great Lakes Region Examined through Copper-Base Metal Artifacts

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Published in 2019 at "International Journal of Historical Archaeology"

DOI: 10.1007/s10761-018-0467-0

Abstract: This article presents results of attribute analysis of copper-base metal artifacts from early colonial upper Great Lakes archaeological contexts. Patterns of variation were identified, providing evidence for cultural and technological heterogeneity in the production methods… read more here.

Keywords: metal artifacts; base metal; copper base; great lakes ... See more keywords

Characterization and Strain-Hardening Behavior of Friction Stir-Welded Ferritic Stainless Steel

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Published in 2017 at "Journal of Materials Engineering and Performance"

DOI: 10.1007/s11665-017-3020-0

Abstract: In this study, friction stir-welded joint of 3-mm-thick plates of 409 ferritic stainless steel (FSS) was characterized in light of microstructure, x-ray diffraction analysis, hardness, tensile strength, ductility, corrosion and work hardening properties. The FSW… read more here.

Keywords: strain hardening; stir; stainless steel; ferritic stainless ... See more keywords
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Weld joint properties of nitrogen-alloyed austenitic stainless steel using multi-pass GMA welding

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Published in 2020 at "Archives of Civil and Mechanical Engineering"

DOI: 10.1007/s43452-020-00087-1

Abstract: The welding of nitrogen (0.29 wt%)-alloyed austenitic steel (grade 23-8-N) was performed with gas metal arc welding process. Solution treatment was performed at 950 °C and 1150 °C on base metal prior to weld. Base metal after… read more here.

Keywords: weld joint; nitrogen alloyed; metal; steel ... See more keywords

A new strategy on biomining of low grade base-metal sulfide tailings.

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Published in 2019 at "Bioresource technology"

DOI: 10.1016/j.biortech.2019.122187

Abstract: This study investigated the effect of designed microbial consortia on biomining of low grade base-metal sulfide tailings. The results show the amount of recycled metals were equal if the tailings were leached by mixed cultures… read more here.

Keywords: metal sulfide; biomining low; grade base; sulfide tailings ... See more keywords
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Sodium sulfate splitting as zero brine process in a base metal refinery: Screening and optimization in batch mode

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Published in 2021 at "Desalination"

DOI: 10.1016/j.desal.2021.115096

Abstract: Abstract In base metal refineries Na2SO4 is produced in large quantities as a neutralization salt and recovered via energy intensive evaporative crystallization. Splitting the Na2SO4 brine into its three components NaOH, H2SO4 and process water… read more here.

Keywords: brine; base metal; metal; process ... See more keywords

Integrated remote sensing and geophysical techniques for shallow base metal deposits (Zn, Pb, Cu) below the gossan zone at Kalabar, Western Aravalli Belt, India

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Published in 2021 at "Journal of Applied Geophysics"

DOI: 10.1016/j.jappgeo.2021.104365

Abstract: Abstract Occurrences of small base metal deposits are reported along the western margin of Aravalli Belt in India. Surface manifestation of one such deposit is found to occur as gossan zone within the host rock… read more here.

Keywords: gossan zone; kalabar; base metal; metal deposits ... See more keywords

Corrosion behavior of TLP bonded stainless steel 304 with Ni-based interlayer

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Published in 2019 at "Journal of Manufacturing Processes"

DOI: 10.1016/j.jmapro.2019.04.029

Abstract: Abstract Transient liquid phase bonding of AISI 304 was carried out in a vacuum furnace using a Ni-based interlayer. The effect of bonding time on microstructure and mechanical properties of joints made at temperature of… read more here.

Keywords: tlp bonded; corrosion; base metal;