نتایج جستجو برای: pressureless sintering

تعداد نتایج: 11677  

Journal: :Boletin De La Sociedad Espanola De Ceramica Y Vidrio 2021

MAX phases exhibit excellent combination of ceramic and metallic-like properties. In this work, phase Ti3SiC2 powder was synthesized starting-off with different combinations elemental powders carbides. The used were Ti, Si, C, SiC TiC in combinations, molar ratios size. Powders heat treated on a vacuum furnace for times temperatures situ production the phase. High purity samples analyzed by X-r...

The effect of SiC content, additives, and process parameters on densification and microstructural properties of pressureless sintered ZrB2– (1–10 wt %) SiC particulate composites have been studied. The ZrB2–SiC composite powders mixed by Spex mixer with 1-2wt% C (added as graphite powder) and CMC have been cold-compacted and sintered in argon environment in the temperature range of 1800–2100ºC ...

Journal: :Advanced Engineering Materials 2021

This article studies copper (Cu)-based composites alloyed with nickel (Ni) and reinforced carbon nanotubes (CNTs) fabricated via powder metallurgy under pressureless sintering methodology vacuum. Different compositions of matrices containing 0, 3, 30 wt% Ni are compared after at 550 750 °C. The formation phases for the different is analyzed by high-temperature X-ray diffraction (HT-XRD) in soli...

Journal: :Crystals 2023

MoO2 micro-powders with a mean pore size of 3.4 nm and specific surface area 2.5 g/cm3 were compacted by dry pressing, then pressureless sintered at temperature 1000–1150 °C for 2 h or sintering time 0.5–12 1050 in an N2 atmosphere. Then, their microstructure evolution morphology, crystallite, grain growth investigated. By certain times, the irregular shape powders transformed into equiaxed str...

Journal: :Coatings 2022

Hydroxyapatite is a widely used material for the bioactivation of an implant’s surface. A promising hydroxyapatite coating approach kinetic deposition powder particles. The possibility solid-state improvement through merging Aerosol Deposition and Low Pressure Cold Spraying techniques prospect improving efficiency quality coatings. objective paper to study possibilities structure modification c...

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