Cathodic Arc Deposition: From Spark to Surface Perfection in China
1. What Is Cathodic Arc Deposition?
| Metric | Cathodic Arc | Magnetron Sputter | Electroplated Ni |
|---|---|---|---|
| Thickness Range | 0.1–5 µm | 1–5 µm | 5–50 µm |
| Hardness (HV) | 3 000 | 2 500–3 200 | 700 |
| Max Service Temp | 1 000 °C | 400 °C | 300 °C |
| Droplet-Free | ✅ Filtered | N/A | N/A |
| REACH Status | ✅ Compliant | Compliant | ⚠️ Restricted |
2. The 5-Step Cathodic Arc Process – From Spark to Surface
| Step | Vacuum Level | Temp (°C) | Action | KPI |
|---|---|---|---|---|
| 1 Plasma Clean | 10⁻³ mbar | 25 | Ar⁺ removes oxide & oil | Contact angle ≤ 8° |
| 2 Arc Ignition | 10⁻³ mbar | 150–500 | Cathodic arc vaporizes target | Arc current 50–200 A |
| 3 Filtered Plasma | 10⁻⁴ mbar | 150–500 | Magnetic filter removes droplets | Droplet count < 0.01 % |
| 4 Dense Film Growth | 10⁻⁴ mbar | 150–500 | Vapor condenses on substrate | ±3 nm uniformity |
| 5 QA & Pack | Air | 25 | CT + nano-indent + salt-spray | CpK ≥ 1.67 |
3. 2024 Performance Matrix – Arc vs Other PVD Routes
| Method | Thickness (µm) | Hardness (HV) | Salt-Spray (h) | Max Temp (°C) | Typical Use |
|---|---|---|---|---|---|
| Electroplated Ni | 25 | 700 | 48 | 300 | Decorative trim |
| Spray Paint | 50 | 200 | 48 | 150 | Body panels |
| Filtered Arc ta-C | 0.5 | 3 000 | 1 000 | 400 | Medical drills |
| HiPIMS Sputter | 1 | 3 200 | 1 200 | 1 000 | EV motor punches |
| Cathodic Arc TiAlCrN | 2 | 2 900 | 1 200 | 1 000 | Turbine blades |
4. Three 2024 Case Studies
Case 1 – Aerospace Turbine Blade
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Client: European OEM, 2024
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Problem: Fretting at 850 °C dovetail
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Arc Stack: TiAlCrN 2 µm + a-C:H 200 nm
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Outcome: Wear scar < 5 µm after 1 000 h; maintenance interval doubled
Case 2 – EV Motor Lamination Die
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Client: US EV Tier-1, 2024
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Problem: 0.35 mm electrical steel sticking at 400 °C
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Arc Stack: CrAlON 1.8 µm + a-C:H 50 nm
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Outcome: Tool life 4× longer, scrap −40 %
Case 3 – Medical Staple
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Client: US MedTech startup, 2024
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Problem: 316L needs low-friction piercing
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Arc Stack: ta-C 300 nm + Cr 30 nm adhesion
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Outcome: Penetration force −25 %, CE mark granted
5. Global Standards & Sustainability
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ISO 9001:2015 / IATF 16949 / ISO 13485
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REACH, RoHS, FDA 21 CFR §175.300
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Energy: 0.45 kWh per m²
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Waste: Zero liquid effluent
6. 7-Day Delivery Timeline
| Milestone | Lead Time |
|---|---|
| DFM + Quote | 24 h |
| Prototype (1–10 pcs) | 48 h |
| Validation (CT, salt-spray) | 5 days |
| Mass Production | 7–10 days |
| Door-to-Door Delivery | 12 days total |
7. FAQs – Which Arc Stack Fits My Job?
| Question | Answer |
|---|---|
| Can arc coat plastics? | Yes, metallised PEEK, PEKK, LCP. |
| Largest part? | 800 mm Ø × 1200 mm L. |
| Minimum order? | 1 piece. |
8. How to Start Tomorrow
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Email [email protected] with STEP/IGES.
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Specify substrate, load, temperature, thickness budget.
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Receive DFM + arc stack + quote within 48 h.
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Approve → 3-day prototype → volume ramp.
Explore complementary services: Professional Anodizing Near Me
Related Technical Guides
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