The properties of the MoS/Zr coatings can be significantly affected by the deposition temperature. In this study, the MoS/Zr composite coatings were fabricated on the cemented carbide surface, utilizing the duplex deposition technology at various deposition temperatures. The effects of deposition temperature on the mechanical and friction properties of the MoS/Zr coatings were systematically studied. Results exhibited that as the deposition temperature increased, the adhesion force increased first and then decreased, and the coating thickness and micro-hardness gradually increased. Dry sliding tests against a hardened steel ring showed that the tribological behaviors and wear mechanisms of the MoS/Zr coatings varied with deposition temperature, which were due to the changing mechanical properties of coatings caused by the temperature. The coatings deposited at a temperature of 180 °C and 200 °C possessed preferable comprehensive mechanical and tribological properties.
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http://dx.doi.org/10.3390/ma14175100 | DOI Listing |
Sci Adv
January 2025
State Key Laboratory of Advanced Welding and Joining of Materials and Structures, School of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen 518055, China.
Perovskite oxides have a wide variety of physical properties that make them promising candidates for versatile technological applications including nonvolatile memory and logic devices. Chemical tuning of those properties has been achieved, to the greatest extent, by cation-site substitution, while anion substitution is much less explored due to the difficulty in synthesizing high-quality, mixed-anion compounds. Here, nitrogen-incorporated BaTiO thin films have been synthesized by reactive pulsed-laser deposition in a nitrogen growth atmosphere.
View Article and Find Full Text PDFJ Phys Chem Lett
January 2025
Clausius Institut für Physikalische und Theoretische Chemie, Universität Bonn, Bonn 53115, Germany.
The carpet growth of alkali halide (AH) layers across step edges of substrates enables the growth of seamless and continuous large domains. Yet, information about how the AH layer adapts continuously to the height difference between the terraces on the two sides of a step is only described by continuum models, which do not give details of the ionic displacements. Here, we present a first study of thin epitaxial KCl(100) layers grown on the Ag(111) surface by scanning tunneling microscopy that provides atomistic details for the first time.
View Article and Find Full Text PDFSmall Methods
January 2025
School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 401331, China.
Bilayer graphene ribbons (GRs) hold great promise for the fabrication of next-generation nanodevices, thanks to unparalleled electronic properties, especially the tunable bandgap in association with twist angle, ribbon width, edge structure, and interlayer coupling. A common challenge in manufacturing bilayer GRs via templated chemical vapor deposition (CVD) approach is uncontrollable dewetting of micro- and nano-scaled patterned metal substrates. Herein, a confined CVD synthetic strategy of bilayer GR arrays is proposed, by utilizing the bifunctional Ni as a buffered adhesion layer to regulate the anisotropic dewetting of metal film in the V-groove and as a carbon-dissolution regulated metal to initiate the bilayer nucleation.
View Article and Find Full Text PDFBiomed Mater
January 2025
Dagestan State Medical University of the Ministry of Health of the Russian Federation, Makhachkala, Mahackala, Dagestan, 367000, RUSSIAN FEDERATION.
Suture-associated surgical site infection (SSI) causes bacterial pathogens to colonize on the suture surface that are highly resistant to antibiotic treatment. Conventional suture materials used in surgical practice are causing complications such as infection and chronic inflammation. Surgical suture materials with antibacterial coatings are widely used in surgical practice.
View Article and Find Full Text PDFPhytomedicine
January 2025
Collaborative Innovation Center of Prevention and Treatment of Major Diseases by Chinese and Western Medicine, Henan Province, Henan University of Chinese Medicine, Zhengzhou 450046, Henan, China; Collaborative Innovation Center of Research and Development on the whole Industry Chain of Yu-Yao, Henan University of Chinese Medicine, Zhengzhou 450046, Henan, China. Electronic address:
Background: Shenghui Decoction (SHD) is a frequently utilized traditional Chinese medicine formula in clinical settings for addressing cognitive impairment in elderly individuals. Nevertheless, the precise mechanism by which SHD exerts its effects on the most prevalent form of dementia, Alzheimer's disease (AD), remains to be elucidated.
Methods: Temperature-induced transgenic C.
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