نتایج جستجو برای: aluminium oxide al2o3

تعداد نتایج: 199971  

Journal: :Occupational and environmental medicine 2003
M Sim G Benke

T he primary aluminium industry is one of the largest industries in the world today. World production exceeded 20 million metric tons in 2001 (IAI, 2002) and production is widespread throughout the world. Aluminium as the pure metal or in alloys is used to make a range of products including aircraft, utensils, scientific and domestic apparatus, electrical conductors, and automotive parts. Alumi...

2015
Lasse Karvonen Tapani Alasaarela Henri Jussila Soroush Mehravar Ya Chen Antti Säynätjoki Robert A. Norwood Nasser Peyghambarian Khanh Kieu Seppo Honkanen Harri Lipsanen

We demonstrate a novel atomic layer deposition (ALD) process to make high quality nanocrystalline titanium dioxide (TiO2) and zinc oxide (ZnO) with intermediate Al2O3 layers to limit the crystal size. The waveguide losses of TiO2/Al2O3 nanolaminates measured using the prism coupling method for both 633 nm and 1551 nm wavelengths are as low as 0.2 ± 0.1 dB/mm with the smallest crystal size. We a...

Journal: :Chemical communications 2015
Amit K Roy Jolien Dendooven Davy Deduytsche Kilian Devloo-Casier Kim Ragaert Ludwig Cardon Christophe Detavernier

This communication reports an approach based on plasma-enhanced atomic layer deposition of aluminium oxide for the functionalization of polytetrafluoroethylene (PTFE or "Teflon") surfaces. Alternating exposure of PTFE to oxygen plasma and trimethylaluminium causes a permanent hydrophilic effect, and a more than 10-fold improvement of the "glueability" of PTFE to aluminium.

Journal: :Trybologia 2021

The article presents the type of wear Al2O3 layers produced on aluminium alloy EN AW-5251 depending production parameters. Oxide were by using DC anodizing in a ternary electrolyte at variable current density and temperature. layer scratch tests carried out Micron- Gamma microhardness tester. scratches oxide tested for geometric structure surface Form TalySurf 2 50i contact profilograph. Contac...

ESHRAGHI H., , MIRFAKHRAEE B., , SAR POULAKI H., ,

Effect of MgO addition on reaction sintering of aluminium titanate was investigated using equimolar Al2O3 and TiO2 after firing the samples at 1400 C for four hours. Results showed that MgO addition enhanced the sintering process by magnesium aluminates formation, which led to lower porosity and improved densification of the samples. Physical and mechanical properties showed that samples contai...

Journal: :Calphad-computer Coupling of Phase Diagrams and Thermochemistry 2022

The Al2O3–CaO–SiO2 ternary is a basic oxide system relevant for the Pedersen alumina production process and aluminothermic silicon with low environmental impact using secondary aluminium silica raw materials. Rheological property one of most important properties above applications. A phenomenological viscosity model, inspired by Calphad technique, has been proposed description rheological cover...

Journal: :Batteries & supercaps 2021

A major challenge for lithium-ion batteries based on nickel-rich layered oxide cathodes is capacity fading. While chemo-mechanical degradation and/or structural transformation are widely considered responsible degradation, a comprehensive understanding of this process still not complete. For the stable performance these cathode materials, aluminium (Al) plays crucial role, only as current colle...

Journal: :Lubricants 2022

Efficient and effective lubricants have great application prospects in the manufacturing industries. Minimum quantity lubrication (MQL) machining with low flow rate of nanolubricants is investigated for cooling during process. This paper investigates characterization graphene-mixed aluminium oxide (G-Al2O3) hybrid nanomixture spent MQL purposes. The main advantage this method to reduce disposal...

Journal: :Physica Status Solidi (rrl) 2023

Interfacial two-dimensional electron gas (2DEG), especially the SrTiO3-based ones at unexpected interface of insulators, have emerged to be a promising candidate for efficient charge-spin current interconversion. In this article, gain insight into mechanism interconversion oxide-based 2DEG, we focused on conducting interfaces between insulating SrTiO3 and two types aluminium-based amorphous nam...

Journal: :Jurnal Rekayasa Mesin 2022

Penggunaan aluminium dalam beberapa tahun terakhir sudah banyak diaplikasikan baik dunia otomotif, industri, elektronik, maupun rumah tangga. Karakteristik umum yang menjadikan material ini sering digunakan diantaranya yaitu ringan, konduktor listrik dan panas baik, serta kelebihan lain dimiliki. Metal matrik komposit dengan Aluminium paduan sebagai matriknya masih harus ditingkatkan menambahka...

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