Results 21 to 30 of about 55,413 (296)

Preparation of Aluminum Nitride/Aluminum Composites by Nitridation of Aluminum

open access: yesJournal of the Ceramic Society of Japan, 1993
AlN/Al composites were prepared by the nitridation of Al-MgO (0-7.5wt%) powder compacts at 1100-1400°C. The dense composite layer grew outward from the bottom surface of the powder compact at 1250-1400°C. The conversion of Al to AlN and the thickness of the composite increased with increasing content of MgO, reaction temperature and time.
Keita INOUE   +3 more
openaire   +2 more sources

Investigation of the effects of silica coating on the thermal conductivity and porosity of aluminum nitride after sintering

open access: yesJournal of Asian Ceramic Societies, 2019
This paper describes a method of applying a silica coating on aluminum nitride and investigations concerning the thermal conductivity between the coating layer and the aluminum nitride as well as the effect of the silica coating layer on the density of ...
Ken’Ichiro Kita, Naoki Kondo
doaj   +1 more source

Carbothermal Reduction Nitridation of Fly Ash, Diatomite and Raw Illite: Formation of Nitride Powders with Different Morphology and Photoluminescence Properties

open access: yesCrystals, 2020
Rare-earth-doped SiAlON and Si3N4 materials from aluminosilicate starting materials have been reported to show superior photoluminescence (PL) properties.
Kuizhou Dou   +4 more
doaj   +1 more source

Thermal conductivity enhancement of aluminum scandium nitride grown by molecular beam epitaxy

open access: yesMaterials Research Letters, 2023
Aluminum scandium nitride (AlScN) has been receiving increasing interest for radio frequency microelectromechanical systems because of their higher achievable bandwidths owing to the larger piezoelectric response of AlScN compared to AlN.
Gustavo A. Alvarez   +9 more
doaj   +1 more source

Low temperature sacrificial wafer bonding for planarization after very deep etching [PDF]

open access: yes, 1994
A new technique, at temperatures of 150°C or 450°C, that provides planarization after a very deep etching step in silicon is presented. Resist spinning and layer patterning as well as realization of bridges or cantilevers across deep holes becomes ...
Berenschot, J.W.   +3 more
core   +2 more sources

Aluminum nitride two-dimensional-resonant-rods [PDF]

open access: yesApplied Physics Letters, 2020
In the last few decades, bulk-acoustic-wave filters have been essential components of 3G-to-4G radios. These devices rely on the high electromechanical coupling coefficient (kt2 ∼ 7%), attained by aluminum nitride (AlN) film-bulk-acoustic-resonators (FBARs), to achieve a wideband and low-loss frequency response.
Xuanyi Zhao   +2 more
openaire   +2 more sources

Optimization of Processing Parameters and Adhesive Properties of Aluminum Oxide Thin-Film Transition Layer for Aluminum Substrate Thin-Film Sensor

open access: yesMicromachines, 2022
A thin-film strain micro-sensor is a cutting force sensor that can be integrated with tools. Its elastic substrate is an important intermediate to transfer the strain generated by the tools during cutting to the resistance-grid-sensitive layer.
Yongjuan Zhao   +3 more
doaj   +1 more source

Nanoparticles of wurtzite aluminum nitride from the nut shells

open access: yesAIP Advances, 2016
Nanoparticles of aluminum nitride were produced from a thermal treatment of a mixture of aluminum oxide (Al2O3) and shells of almond, cashew, coconuts, pistachio, and walnuts in a nitrogen atmosphere at temperatures in excess of 1450 °C. By selecting the
S. B. Qadri   +4 more
doaj   +1 more source

Development of a Mathematical Model of the Synthesis of a Polycrystalline Superhard Material Based on Cubic Boron Nitride from Wurzite Boron Nitride Modified with Aluminum

open access: yesМеханика машин, механизмов и материалов, 2022
A mathematical model is developed for the technological process of synthesis under conditions of high pressures P and temperatures T of a polycrystalline superhard material based on cubic boron nitride (cBN).
Vladimir T. Senyut   +2 more
doaj   +1 more source

Study on Preparation and Wear Resistance of Aluminum Nitride (AlN)Coating on the Surface of ADC12 Aluminum Alloy [PDF]

open access: yesCailiao Baohu, 2023
In order to improve the wear resistance of ADC12 aluminum alloy material,a multi-functional ion nitriding furnace was used to perform ion nitriding on the surface of ADC12 aluminum alloy to prepare aluminum nitride (AlN) coatings.The phase structure and ...
DING Shanlin, WANG Jiangying, ZHANG Ying, HU Lijun
doaj   +1 more source

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