Chromium Oxide Powder (Cr2O3, Purity: 99.95+%, APS: 40-60µm)

Chromium Oxide Powder

Product: Chromium Oxide Powder (Cr2O3, Purity: 99.95+%, APS: 40-60µm)

Quality Control: Each lot of NANOSHEL Chromium Oxide Powder was tested successfully.

Chromium Oxide Powder

Particles Size Analysis – Cr2O3 Powder

Cr2O3 Powder

SEM – Chromium Oxide Powder

Product Name Chromium Oxide Powder
Stock No. NS6130-12-000901
CAS 1308-38-9 Confirm
Purity 99.95+% Confirm
APS 40-60µm Confirm
Molecular Formula Cr2O3 Confirm
Molecular Weight 151.99g/mol Confirm
Form Powder Confirm
Color Black/Green Confirm
Density 5.2g/cm³ Confirm
Melting Point 2435 °C Confirm
Boiling Point 4000 °C Confirm
Coefficient of thermal expansion 5.1 × 10-6 K-1 Confirm
Resistance rate 21 × 10-6 Ω.cm Confirm
Solubility Insoluble in acid
Main Inspect Verifier Manager QC

Typical Chemical Analysis

Mn 19ppm
Na 53ppm
Ca 28ppm
Sr 12ppm
Ni 58ppm
Fe 18ppm
K 35ppm
Mg 12ppm
Al 55ppm
Ba 7ppm
Zn 39ppm
Cu 9ppm
Co 3ppm

Experts Review:

Miller-(Christopher)-345x239Dr. Baron Augustin, Ph.D (TUM)(Technical University of Munich, Germany)
Chromium Oxide Powder (Cr2O3) occurs in nature as a rare mineral called eskolaite. These nanoparticles are predominantly used as dyes. Some of the synonyms of chromium oxide nanoparticles are chromsaeureanhydrid, trioxochromium, monochromium trioxide, chromia, green cinnabar, chrome ochre and chromtrioxid. Chromium belongs to Block D, Period 4 while oxygen belongs to Block P, Period 2 of the periodic table.

images (33)

Dr. Darren Chandler, Ph.D(Manchester Metropolitan University, U.K)
Chromium Oxide Powder (Cr2O3) is an important refractory material due to its high melting temperature (about 2300◦C) and oxidation resistance; although its sinter-ability is very poor and requires special sintering condition to achieve high density. For such an application, the availability of nano sized powders would be desirable since they usually present high surface areas and may favor the sintering process.


Dr. Ms. Cristiana Barzetti (University of Cagliari-Department of Chemical Engineering and Material Science, Italy)
Chromium Oxide Powder is used as a thermal spray material for protecting the underlying metal surface, and as an additive to corrosion-resistant and wear-resistant materials. It is used in coatings of bearings, seals, orifices, and valve seals, and as a fine-crystal phase in other sintered carbides, where, like the vanadium carbide, it inhibits growth of submicrometre grains during pressing and sintering.


Dr. Jang Huang, Ph.D (Shandong Science and Technology University, China)
Chromium Oxide Powder can combine to form many different compounds which have uses in welding and thermal spraying. As well as these current applications of chromium carbide, the material has potential as a more environmentally friendly replacement for hard chromium plating.

images (21)Dr. Mark Brown (Georgia Institute of Technology in Atlanta,USA)
Chromium Oxide Powder Diamalloy powders are characterized by their ability to provide wear, oxidation and hot corrosion resistance at elevated temperatures. The NiCr cladding improves corrosion properties. Higher NiCr content results  increased fracture toughness of the coatings.

Chromium Oxide Powder

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