The present study investigated the active corrosion protection provided by superhydrophobic cerium stearate coatings. Superhydrophobic cerium stearate was deposited on anodized AA 2024-T3 at 40 V with different electrodeposition times using a simple DC electrodeposition technique to know the role of electrodeposition time on surface morphology, hydrophobicity, and corrosion resistance. We characterized the structure and morphology of cerium stearate to understand its formation mechanism. Electrodeposition process at 40 V for 120 min resulted in the formation of dual scale Allium giganteum like micro/nano hierarchical texture of cerium stearate with a water contact angle (WCA) of 165 ± 1.6°. The cerium stearate coating obtained for 120 min process time had excellent self-cleaning property and good chemical stability, environmental stability, and mechanical durability acceptable for industrial applications. Electrochemical impedance spectroscopy (EIS) and scanning vibrating electrode technique (SVET) were used to investigate the active corrosion protection of cerium stearate coating. The electrodeposited cerium stearate coating showed active corrosion protection based on self-healing ability by releasing cerium (Ce3+) ions.
In this investigation, experiments have been conducted to analyse the mechanical properties of AA7075 with new combination of ceramic particles such as Al2O3, TiO2, B4C. Three different weight % of the innovative hybrid composites have been prepared by stir casting process. Various mechanical tests such as hardness, tensile, impact test have been conducted. It is found that the mechanical properties i.e. hardness, tensile strength and impact strength gets increases by increasing the weight percentage of Al2O3 as 3%, 6% &9% and keeping the weight percentage of B4C & TiO2 as 5%.
This work deals with the effect of hard ceramic particles on Tribological properties of AA 7075 Hybrid metal matrix composites. The liquid stir casting method has been used for preparing Hybrid metal matrix composites. AA 7075 used as base material and Al2O3, B4C and TiO2 used as reinforcement materials. Different weight percentages of reinforcement were used for three different compositions of composites. The dry sliding wear tests were done on pin-on disk apparatus by varying the applying load. The wear rate and coefficient of friction was recorded by computer. The Microstructural study was done by using Scanning Electron Microscope (SEM). From the experimentation, the wear resistances of hybrid composites were increased by increasing the weight percentage of Al2O3 with B4C and TiO2. From microstructure studies the stir casting method distributes the ceramic particles uniformly through the aluminium alloy.
Introduction: Mounting is the final stage in histologically preparing a slide and creates a permanent the bond between the coverslip and the slide, preventing breakage, air drying artefacts, and stain fading.
Materials & methods: In this study, fifty slides were prepared, twenty-five of which were mounted using DPX and twenty five using cyanoacrylate adhesive. The slides were assessed for clarity of nuclear and cytoplasmic details, adhesion between coverslip and slide, and the presence of air bubbles by two blinded observers.
Results: The results showed that adhesion between coverslip and slide was better when mounted with cyanoacrylate adhesive, but better clarity of nuclear and cytoplasmic details and minimal air bubble entrapment was seen when tissue sections were mounted using DPX.
Conclusion: Therefore, the use of cyanoacrylate adhesive cannot be an alternative to DPX for mounting soft tissue sections.
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