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By Lzh | 08 February 2023 | 0 Comments

Why chromium oxide can greatly improve the high-temperature oxidation resistance of the alloy?

What is chromium oxide?
Chromium oxide green is a hexagonal crystal system or amorphous dark green powder with a metallic luster. It usually has two color phases: light olive green and dark olive green, with metallic color. Relative density is 5.21, melting point: is 2266 , and boiling point is 4000 . It has an excellent heat resistance and can withstand 1000 without discoloration, acid resistance, and alkali resistance. The product has high purity, small particle size, uniform distribution, and extremely hard crystals. Very stable, There is no change even when hydrogen is introduced under red heat. It is soluble in heated potassium bromate solution, slightly soluble in acids and alkalis, and almost insoluble in water, ethanol, and acetone.
Structure of chromium oxide
Pure Cr2O3, without the impurity or stoichiometric shift, has the characteristics of an insulator due to its narrow 3d band. However, CrO3 formed by the decomposition of CiO3 after calcination at high temperatures is easy to cause excess oxygen ions or vacancy of chromium ions, so it has the characteristics of a semiconductor (9. Cr2O3 has a and Y crystal forms. A - Cr2O3 is a thermodynamic stable crystal form, while Y - Cn2O3 is in a thermodynamically metastable form with greater activity.
Use of chromium oxide
It has certain activity, while Y Cr2O3 with spinel structure has better activity, so that Cr203 can be used as a catalyst. Cr203-supported catalyst is widely used in the petrochemical industry. It has high activity for hydrogenation, dehydrogenation, dehydrogenation cyclization, and olefin polymerization of hydrocarbons. Currently, the Cr2O3 catalyst supported on porous oxide is mostly used in the industry. For example, CrO3AbO3 is the most widely used hydrocarbon dehydrogenation catalyst; its activity and selectivity are closely related to the valence change of chromium ions in CnO3.
Price of chromium oxide
Chromium oxide particle size and purity will affect the product's price, and the purchase volume can also affect the cost of chromium oxide. A large amount of large amount will be lower. The price of chromium oxide can be found on our company's official website.
Chromium oxide supplier
Luoyang Tongrun Nano Technology Co. Ltd.  (TRUNNANO) Luoyang City, Henan Province, China, is a reliable and high-quality global chemical material supplier and manufacturer. It has more than 12 years of experience providing ultra-high quality chemicals and nanotechnology materials, including chromium oxide, nitride powder, graphite powder, sulfide powder, and 3D printing powder. If you are looking for high-quality and cost-effective chromium oxide, you are welcome to contact us or inquire at any time.

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