What is γ-Alumina?


Mar 12, 2023 ,

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What exactly is g–Alumina? What are the g–type crystal forms of Alumina ? g–alumina is.
A-type of alumina does not dissolve in water, but it can dissolve in alkali or strong acid solutions. G-type Alumina transforms into a type Alumina when heated to 1200°C. The porous substance g-type Alumina has a high level of activity, and a very strong adsorption ability. It is porous and can have an internal surface area up to several hundred meters. These cylindrical pinkish or colorless industrial products have good resistance to high pressure.

gAlumina Properties
The particle size of g-phase nano-alumina is smaller than that of 20nm, with uniform particle size distribution, high purity, excellent dispersion, high specific surface, high temperature-resistant inertia and high activity, so it belongs to active alumina, porosity, high hardness and good dimensional stability.
You can use it to strengthen and toughen many types of materials, including rubber, plastics, ceramics, and refractories. It’s easy to dissolve in solvent water. You can mix it with ethanol, propanol and propylene glycol or isopropanol as well as ethylene glycol monobutylether, acetones, butanones, benzene, and xylene. It’s often used in epoxy resin and plastics.

What does g-Alumina do?
Coatings: Wear-resistant coatings, porcelain film coatings, and plasma spraying.
Ceramics: Bioceramics, translucent ceramics and alumina clays.
The petrochemical industry has catalysts, catalyst carriers and automotive exhaust purification materials.
Polishing materials: single crystal silicon wafer grinding and submicron/nanometer grinding materials.
Lighting: High pressure sodium transparent tube, long afterglow and rare earth tricolor, phosphor, and other phosphors, as well as LED and lamp.
Electronics: Single crystal and integrated circuit substrates, far-infrared material, and single crystal materials
Cosmetic Fillers:
Organic membrane materials.

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