Hard Coating Solutions | PVD Surface Finishing China – JLY Precision Tech

Hard coating solutions from JLY Precision Tech deliver 3 000 HV hardness and 0.05 friction via PVD. REACH-compliant, no-MOQ service for moulds, tools & aerospace parts. Quote in 48 h.

July 14, 2025

Hard Coating Solutions – China’s PVD Edge for Extreme Surface Finishing

Hard coating solutions have become the silent engine behind every high-performance surface. At JLY Precision Tech, we engineer multilayer PVD stacks—TiAlN, CrN, ta-C, TiCN and more—to turn ordinary steels, aluminums and titaniums into wear-proof, corrosion-proof workhorses. This article walks through the science, the data and three fresh case studies that prove why our hard coating solutions are now specified on four continents.

1. What Are Hard Coating Solutions in Modern Surface Finishing?

Hard coating solutions refer to sub-micron to micron-scale PVD layers that raise surface hardness above 1 500 HV while simultaneously cutting friction, blocking corrosion and resisting oxidation up to 800 °C. Unlike traditional electroplated chrome or nickel, PVD layers are metallurgically bonded yet atomically thin, preserving tight tolerances without re-machining.

Key advantages:

Hardness window: 1 500–3 200 HV (adjustable by bias voltage)
Dry friction: 0.05–0.3 versus steel (depends on top layer)
Salt-spray life: 500–1 200 h ASTM B117
REACH compliance: no hexavalent chrome, no PFAS

2. PVD Technologies We Use to Deposit Hard Coatings

Technology	Typical Layer	Key Benefit	Max Thickness
Cathodic Arc TiAlN	Ti₀.₃₃Al₀.₆₇N	3 000 °C oxidation barrier	5 µm
HiPIMS CrN	CrN	Mirror finish Ra ≤ 0.02 µm	4 µm
Filtered Arc ta-C	sp³-C	Diamond-like 3 000 HV	3 µm
Magnetron TiCN	TiCₓN₁₋ₓ	Gradient hardness	6 µm

All chambers run 24/7 lights-out with in-situ spectroscopic ellipsometry for real-time thickness control.

3. Hard Coating Solutions Performance Matrix (2024 Update)

Substrate	Coating Stack	Hardness (HV)	Friction vs. 100Cr6	Salt Spray (h)	Max Temp (air)
H13 die steel	TiAlN/CrN	2 800	0.25	1 000	850 °C
7075-T6 Al	CrN/a-C:H	1 900	0.12	720	350 °C
Ti-6Al-4V	ta-C	3 000	0.05	1 200	400 °C
316L SS	TiCN	2 400	0.20	800	500 °C

Data verified by SGS test reports 2024-Q2.

4. Three Real-World Case Studies

Case Study 1 – High-Speed Mould Cavities

Client: German automotive supplier
Challenge: 30 % cycle-time loss due to resin sticking on P20 mould cores.
Hard Coating Solution: 3 µm TiAlN/CrN multilayer + 200 nm a-C:H top.
Outcome: Release force dropped 40 %; cycle time back to target; 1.2 M shots without recoating.

Case Study 2 – Titanium Hip Rasps

Client: Swiss medical OEM
Challenge: 316L blades dulled after 5 sterilisation cycles.
Hard Coating Solution: 1 µm ta-C on Ti-6Al-4V substrate with Cr adhesion layer.
Outcome: Edge retention improved 5×; passed ASTM F1089 passivation and ISO 10993-5 cytotoxicity.

Case Study 3 – Aircraft Flap Track Rollers

Client: Tier-1 aerospace company
Challenge: Spalling under 35 kN contact load at −55 °C.
Hard Coating Solution: 4 µm gradient TiCN with nano-multilayer architecture.
Outcome: Fatigue life doubled; maintenance interval extended from 6 000 to 12 000 flight hours.

5. Step-by-Step Process Flow in Our Shenzhen Plant

Phase	Actions	QC Check	Lead Time
RFQ review	DFM, load modelling	24 h	—
Pre-treatment	Ultrasonic clean + plasma etch	Contact angle ≤ 15°	2 h
PVD deposition	Real-time thickness monitor	±5 nm tolerance	4-8 h
Post-polish	CMP or drag finishing	Ra ≤ 0.02 µm (if req.)	2 h
Final inspection	Calot, Rockwell C adhesion, salt-spray coupons	CpK ≥ 1.67	12 h