What is chromium oxide?
As a high-temperature resistant material, chromium trioxide (Cr2O3) shows excellent performance in extreme temperature environments.
The high-temperature environment is a great challenge for many materials.
However, some unique materials can maintain the stability of their structure and properties at high temperatures. Chromium trioxide is such an eye-catching material.
Chromium trioxide has many excellent properties, which makes it a treasure in the field of high-temperature resistance.
High-temperature stability of chromium trioxide
Chromium trioxide has excellent high-temperature stability, which enables it to maintain its physical and chemical properties at high temperatures.
Its melting point is as high as 2435 degrees Celsius to maintain its integrity and function under extreme temperature conditions in most practical applications.
Technical Parameter of Cr2O3 Powder CAS 1308-38-9 Chrome Oxide
| Product Name |
Chrome Oxide Green |
EINECS No. |
215-160-9 |
CAS No. |
1308-38-9 |
| Molecular Formula |
Cr2O3 |
Appearance |
Bright green to dark green |
| Standard |
TRCr2O3-G |
TRCr2O3-D |
TRCr2O3-M |
| Cr2O3 |
>99% |
>99% |
>99% |
| Fe2O3 |
≤0.2% |
≤0.2% |
≤0.2% |
| SiO2 |
≤0.2% |
≤0.2% |
≤0.2% |
| Moisture |
≤0.2% |
≤0.2% |
≤0.2% |
| Water soluble |
≤0.3% |
≤0.3% |
≤0.3% |
| Sieve residue(45um) |
≤0.5% |
≤0.5% |
≤0.2% |
| D50 (um) |
1.2-2 |
2-8 |
0.5-1 |
| Bulk density (g/cm3) |
0.6-0.8 |
1.2-1.5 |
0.4-0.65 |
| Hexavalent chromium |
Minimum up to 0-5ppm, or customize as requirement |
Crystal structure of chromium trioxide
The crystal structure of chromium trioxide is fundamental to its high-temperature resistance.
It adopts the matrix structure of alternating arrangement of red, blue, and green, which gives chromium trioxide good thermal expansion performance.
At high temperatures, this structure can effectively withstand the stress caused by thermal expansion and is not easy to cause lattice damage.
Chemical stability of chromium trioxide
Chromium trioxide has high resistance to many chemicals.
It reacts with oxygen at high temperatures to form a stable chromium oxide layer, forming a dense protective coating to prevent further oxidation reactions.
This oxide layer can effectively isolate chromium trioxide from the external environment, providing additional chemical stability.
Application prospect of chromium trioxide
High-temperature coating: chromium trioxide is widely used as a temperature coating material to protect metal surfaces from high-temperature oxidation and corrosion.
It can be applied to turbine engines, burners, and heat exchangers in aerospace, energy, petrochemical, and other industries to prolong its service life and performance.
Ceramic materials: because of the high-temperature stability and excellent mechanical properties of chromium trioxide, it is often used to prepare high-temperature ceramic materials, such as ceramic stoves, ceramic pipes, and ceramic coatings.
These ceramic materials show excellent wear resistance, corrosion resistance, and insulation properties at high temperatures.
Electronic materials: chromium trioxide also has essential applications in electronic materials.
It can be used as a semiconductor material to prepare electronic components and circuits at high temperatures.
Its stable chemical and high insulation properties enable it to work reliably in high-temperature environments.
In the field of optics, chromium trioxide is widely used.
Because of its good refractive index and transparency, it prepares optical devices at high temperatures, such as infrared windows and laser visual elements.
Fireproof materials: chromium trioxide has excellent fireproof performance and is widely used in preparing fireproof coatings, boards, and flame-retardant materials.
It can resist thermal radiation and flames at high temperatures, slow fire spread, and protect people and property.
Conclusion
As a high-temperature resistant material, chromium trioxide shows excellent performance and stability in high-temperature environments.
Its high-temperature stability, crystal structure, and chemical stability are the key factors of its high-temperature resistance.
Chromium trioxide has a broad application prospect in many fields, such as high-temperature coating, ceramic material, electronic material, optical field, fireproof material, etc.
With the continuous development of science and technology, there is room for further growth in the performance and application of chromium trioxide.
Chromium Oxide Supplier
Luoyang Trunnano Tech Co., Ltd (TRUNNANO) is a professional chromium trioxide powder supplier with over 12 years experience in chemical products research and development.
We accept payment via Credit Card, T/T, West Union and Paypal. Trunnano will ship the goods to customers overseas through FedEx, DHL, by air, or by sea.
