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Influence of contaminants on gas nitriding
Surface Engineering, 1996Machining of steels not only affects the shape of the workpiece, but also influences surface structure and composition. At elevated temperatures and pressures during machining or the subsequent cleaning process cooling lubricants, hydraulic oils, machine greases, and cleaning residues can form stable adsorption or reaction layers.
O. Irretier +5 more
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Hexagonal boron nitride stationary phase for gas chromatography
Journal of Chromatography A, 2018This work describes the separation performance of utilizing hexagonal boron nitride (h-BN) as the stationary phase for capillary gas chromatography (GC). The statically coated h-BN column showed moderate polarity and achieved column efficiencies of 3455 plates/m and 3800 plates/m for naphthalene and n-dodecane, respectively.
Xue, Xiong, Meiling, Qi
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Formation of single-phase layer of γ′-nitride in controlled gas nitriding
Metal Science and Heat Treatment, 2005Results on the formation of a layer of γ′-nitride on the surface of carbon steel in the process of controlled gas nitriding (NITREG®) are presented. In the formation of single-phase layers of γ′-nitride it is necessary to control thoroughly the nitriding atmosphere including the stage when the treated material is heated to the process temperature.
J. Michalski +4 more
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Reactive Gas Condensation Synthesis of Aluminum Nitride Nanoparticles
Journal of Nanoscience and Nanotechnology, 2006Aluminum Nitride (AlN) nanoparticles were synthesized using a Reactive Gas Condensation (RGC) technique in which a mixture of ammonia (NH3) and nitrogen (N2) gases were used for the nitridation of aluminum. NH3 served as the reactive gas, while N2 served as both a carrier gas and the inert source for particle condensation.
Colin C, Baker +2 more
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Gas-Reduction—Nitridation Synthesis of Nitride Phosphors for Solid-State Lighting
ECS Meeting Abstracts, 2014In the last decade, SiAlONs and nitridosilicates have been developed as an important class of phosphor host materials because of their great potentials for solid-state lighting (SSL). However, their low manufacturability (reaction sintering and postsynthesis grinding) is a major obstacle to the widespread use in SSL applications, triggering the intense
Takayuki Suehiro +2 more
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Aluminum Nitride and Silicon Nitride for High Temperature Gas Turbine Engines
SAE Technical Paper Series, 1974<div class="htmlview paragraph">High-strength AlN and Si<sub>3</sub>N<sub>4</sub>, which have been produced by hot pressing powder compacts with available sintering aids, are potential candidates for high-temperature vehicular gas turbine engines.
Katsutoshi Komeya, Fumiyoshi Noda
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Production of silicon nitride by gas nitridation of ultra-fine silicon powder
Journal of Materials Science, 1988Ultra-fine silicon powder of diameter 20 to 50 nm was gas nitrided at 1373 K. Contamination with air increased the nitriding temperature, which was lower than that found in previous work for larger particle-size powders.
K. Ishizaki, S. Yumoto, K. Tanaka
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Group III-Nitride based Gas Sensors for Exhaust Gas Monitoring
2001Pt-GaN Schottky devices with catalytically active platinum (Pt) electrodes were investigated. Some measurements were also performed on high-electron-mobility transistors based on GaN/AlGaN heterostructures. The response of these devices towards a number of relevant exhaust gas components such as H2, HC, CO, NO and NO2 was tested.
J. Schalwig +3 more
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