Chromium Oxide (Cr₂O₃) Sputtering Targets

Chromium oxide sputtering targets are widely utilized in thin-film deposition for cutting-edge research and industrial applications due to their exceptional 

thermal stability, corrosion resistance, and tunable electronic properties. 

Application areas:

1. Protective and Functional Coatings

Cr₂O₃ thin films are ideal for wear-resistant, anti-corrosion, and high-temperature oxidation-resistant coatings.

Wear Resistance: Plasma-sprayed Cr₂O₃ coatings exhibit excellent tribological properties, with wear mechanisms dominated by brittle fracture and adhesion, 

making them suitable for mechanical components subjected to friction and abrasion.

Corrosion Protection: Additives like CeO₂ and SiO₂ enhance the density and corrosion resistance of Cr₂O₃ coatings, reducing porosity and improving durability

 in harsh environments.

High-Temperature Oxidation Resistance: Cr₂O₃-based coatings (e.g., FeCrAl composites doped with Y₂O₃) demonstrate superior performance in extreme conditions, 

such as nuclear reactor cladding tubes exposed to 1200°C steam, by forming stable Al₂O₃ layers and suppressing cation diffusion.

2. Optoelectronic and Photovoltaic Devices

Cr₂O₃ serves as a high-performance hole transport layer (HTL) in next-generation optoelectronics.

Organic Photovoltaics (OPVs): Cr₂O₃ films deposited via magnetron sputtering replace traditional PEDOT:PSS, eliminating corrosion issues with indium tin oxide 

(ITO) electrodes while offering enhanced thermal stability and cost-effective scalability.

Transparent Conducting Oxides (TCOs): Transition metal-doped Cr₂O₃ films exhibit p-type conductivity and room-temperature ferromagnetism, enabling 

applications in spintronics and transparent magnetic devices.

3. Energy Storage Systems

Cr₂O₃ composites play a critical role in improving lithium-ion battery performance.

Anode Materials: Cr₂O₃/TiO₂ composites synthesized via solid-state reactions show enhanced cyclability (73.6% capacity retention after 22 cycles) and conductivity, 

attributed to TiO₂ doping mitigating volume expansion and SEI formation.

4. Surface Modification of Nanomaterials

Cr₂O₃ coatings enable precise microstructural regulation of carbon nanotubes (CNTs).

CNT Functionalization: Amorphous Cr₂O₃·(H₂O)₃/₂ coatings on CNTs transform into crystalline nanoparticles at elevated temperatures, offering tailored electronic 

and mechanical properties for sensors or catalytic supports.

5. High-Temperature Oxidation Studies

Cr₂O₃ films are pivotal in fundamental research on oxidation mechanisms.

Active Element Effect (AEE): Yttrium-containing Cr₂O₃/Al₂O₃ films alter oxidation kinetics in Fe25Cr alloys, shifting growth mechanisms from cation- to 

anion-dominated diffusion, critical for designing oxidation-resistant alloys.

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