The effect of V on the morphology of TiB2 particles in as-cast aluminum composites

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Jing Sun ◽  
Fei Wang ◽  
Yuwen Liu ◽  
Lijie Guo ◽  
Haowei Wang
Keyword(s):  
Hexagonal Prism ◽  
Elemental Distribution ◽  
Cast Aluminum ◽  
Aluminum Composites ◽  
Microscopy Investigation ◽  
Electron Microscopy Investigation ◽  
Scanning Electron Microscopy Investigation ◽  
Tib2 Particles ◽  
Hexagonal Platelet

Abstract This study presents the modification effect of trace vanadium on the in-situ formed TiB2 particles in as-cast aluminum composites. With 0.2 wt.% V addition the morphology of TiB2 was modified from hexagonal platelet or irregular feather-like shape to hexagonal prism or rectangular prism with parallel growth steps along the c-axis. Meanwhile, V rich cores were detected in the center of TiB2 and the exposure of the high-index crystal plane (1101)TiB2 was detected in Al-0.2 wt.%V. Statistical analysis of the particle size and aspect distribution both in commercial Al and Al-0.2 wt.%V was conducted. The elemental distribution and scanning electron microscopy investigation revealed that VB2 may serve as the 2D-nucleus of TiB2 particles. The growth mechanism of TiB2 under the influence of V was explored.

scholarly journals Sonophoretic acceleration of degradation process for vaterite particles delivered into the hair follicles

2021 ◽  
Vol 21 (1) ◽  
pp. 80-85
Author(s):  
Yulia I. Svenskaya ◽  
◽  
Elina A. Genina ◽  
Valery V. Tuchin ◽  
◽  
...  
Keyword(s):  
Degradation Process ◽  
Hair Follicles ◽  
Bioactive Molecules ◽  
Microscopy Investigation ◽  
Electron Microscopy Investigation ◽  
Minute Post ◽  
Scanning Electron Microscopy Investigation ◽  
Particulate Delivery ◽  
Scanning Electron

Intrafollicular drug delivery is beneficial in terms of both localized therapy of relevant skin disorders and systemic transportation of bioactive molecules. Vaterite particles are capable of loading and delivering various substances to hair follicles. Possibility to control the duration of their intrafollicular degradation can improve such a particulate delivery system. Here, we propose the use of sonophoresis (1 MHz, 1 W/cm2 ) to accelerate the resorption of vaterite carriers inside the hair follicles of rats in vivo. The effect of sonication is demonstrated utilizing optical coherence tomography monitoring of the skin and scanning electron microscopy investigation of the plucked hairs. A nine-minute post-treatment of skin in the site of particle delivery allowed us to almost halve the time of their degradation.

Scanning electron microscopy investigation of tooth/filling bonding

e-Polymers ◽  
2005 ◽  
Vol 5 (1) ◽  
Author(s):  
Joanna Siejka-Kulczyk ◽  
Małgorzata Lewandowska ◽  
Marta Raczyńska ◽  
Elżbieta Jodkowska ◽  
Krzysztof J. Kurzydłowski
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Human Teeth ◽  
Bonding Quality ◽  
Dental Fillings ◽  
Microscopy Investigation ◽  
Electron Microscopy Investigation ◽  
Scanning Electron Microscopy Investigation ◽  
Tissue Material ◽  
Scanning Electron

AbstractScanning electron microscopy (SEM) investigations have been conducted to determine the influence of selected material on tissue/material bonding. Extracted human teeth were used in this study. Several resin composites were tested as dental fillings. To reveal the structure of the tissue/filling interface, the teeth were cut parallel to the long axis. Bonding quality was determined by direct SEM observation and microanalysis with X-ray energy spectrometry (EDX). The investigated materials show good bonding with enamel.

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