Medthin™ 42 DLC

Probably the best (hard) coating for implants

Medthin 42 coating combines high adhesion strength with low UHMWPE wear and nearly no ion release from the implant substrate reaches the body fluids from the patient. The coating is applied with thickness of about 5µm and it has adhesion strength to metal substrates higher than 1.5GPa. Chromium Nitride + Diamond Like Carbon (top layer) for implants, is deposited with an hybrid system, a combination of PVD high energy sputtering and Plasma Assisted Chemical Vapor Deposition Technologies (PACVD). The top layer is amorphous and has excellent sliding characteristics with extremely low friction coefficients against many materials including ceramic.  

The coating coverage is rather uniform on external surfaces.  Ionbond  can currently deliver coating service of “Medthin 42 DLC on Implants” from America, Europe and Asia.

Technical data



Top layer: hydrogenated amorphous carbon (a-C:H) Base Layer: Chrom.-Nitride

Applicable on following implant material

Titanium, TAV, CoCrMo, 316 LVM, all SS





Thickness, μm

Hardness, GPa

25 to 30

Phase composition

Polycrystalline (CrN) and Amorphous (DLC)

Surface texture, Ra


Coating coverage

Mainly external surfaces³

Masking partial zones or over porous coat



Not noticed in serum

Adhesion strenght, MPa


Wear (abrasion) resistance, coating against UHMWPE


Porosity density, n/mm² & pore size, μm

PACVD (<50, 0.5)⁴

Reduction of allergic potential (CoCrMo, FeCrNi)


Surface wettability of DLC

Extremely hydrophobic

Thermal oxidation resistance (in air)


Chemical oxidation resistance

Very good resistant to PH from 4 to 12 without problems

Resistance to sterilization

All methods allowed

Implant applications

Othopaedic, spine & trauma

²higher coating thickness is possible under request
³internal surfaces are also possible to coat, please contact us
⁴mainly due to dust particles from grey room