Naxau Vacuum Coating Processing - Naxau AM
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CVD Coating Services
Naxau CVD Chemical Vacuum Vapor Deposition coating services are mainly focused on high hard cutting tools, anti-adhesive/stamping molding and other tooling categories.Naxau CVD can deposit coatings from 5 microns to 20 microns thick, using TiN, TiCN and α-alumina (Al2O3) to form monolayers or multilayers.The CVD deposition process is typically at 900°C or above, with a coating time of 10 hours, and is only for high temperature resistant substrates.
- catalogsCVD Coating Processing Services
| Guide to CVD Coating of Cemented Carbide CNC Tools | |||||||
| protective layer | Coating Description | film thickness (μm) | Coating composition | coefficient of friction | Appearance Color | Field of application | |
| KA | TiN | 13~17 | TiCN+Al2O3+TiN | 0.3 | gold color | For general steel parts | |
| KB | TiCN | 13~17 | TiCN+Al2O3 | 0.4 | Black Diamond | Gray cast iron, ductile iron | |
| KC | TiAlN | 13~17 | TiCN+Al2O3+TiN | 0.4 | two-toned | Mild steel, alloy steel | |
| KD | AlTi-based | 13~17 | TiCN+Al2O3 | 0.4 | pornographic | High overall performance | |
| KE | AlTiSi-based | 9~9 | TiCN+Al2O3+TiN | 0.3 | gold color | Stainless steel and other anti-adhesive steel | |
| Process Characteristics | PVD Physical Vapor Deposition | CVD Chemical Vapor Deposition |
|---|---|---|
| vacuum | 10-2 to 10-4 mbar | Atmospheric pressure or low vacuum |
| temp | 200-450°C | 900-1050°C |
| sedimentation limitation | the law of sight | Any surface that the gas can come into contact with |
| Coating process | Physical vapor deposition | chemical vapor deposition |
| film thickness | 1-7 μm, or customized by NanoLion | 5-12 μm, max. 20 μm. |
| Substrate Limitations | Non-vacuum volatile | Long-term high temperature resistance |
| surface finish | 0.03-0.05μm | Needs to be polished |
| reprocess | No heat treatment required | Tool steels need to be post-treated to modulate hardness |
| edge construction | No stacking of edges | Thick film with sandable edges |
Differences between CVD and PVD coatings
CVD is limited to high-temperature resistant materials, and like PVD coating, the surface of the substrate is smooth and free of oil and rust in order to ensure the bonding of the coating.
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