一种等离子喷涂用高纯度球形钨基复合粉末
By preparing high-purity spherical tungsten-based composite powder, the problems of single composition, poor morphological adaptability and low interfacial bonding strength of tungsten powder for plasma spraying are solved, achieving efficient coating corrosion resistance and long-life tungsten cathode protection, which is suitable for the rare earth electrolysis industry.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BAOTOU PREMIER NEW MATERIALS CO LTD
- Filing Date
- 2025-12-26
- Publication Date
- 2026-07-17
AI Technical Summary
Existing tungsten powders for plasma spraying suffer from problems such as limited composition design, poor morphology and process compatibility, low interfacial bonding strength, and uneven distribution of rare earth modification, resulting in short coating service life and making it difficult to meet the long-term use requirements of the rare earth electrolysis industry.
A method for preparing high-purity spherical tungsten-based composite powder is adopted. Through rare earth-modified zirconium oxide nano-processing, precision atomization and composite of tungsten-based composite powder, and vacuum annealing treatment, a dual protection system is formed with an internal dispersed corrosion-resistant phase and a dense surface shell. Combined with glucose carbon template and citric acid chelation technology, the high purity, sphericity and corrosion resistance of the finished powder are ensured.
It significantly improves the corrosion resistance and bonding strength of the coating under high temperature conditions, reduces the corrosion rate, extends the service life of the tungsten cathode, and optimizes the particle size distribution and flowability, making it suitable for plasma spraying processes.
Smart Images
Figure CN121649382B_ABST