
Medthin™ 01 TiN
A reference coating for implants
Medthin™ 01 coating is particularly suitable for improving articulating joints such as those of “Coating on UHMWPE” where polyethylene wear and ion release from substrates (CoCr, SS, TAV, etc) is strongly reduced. The coating is applied with thickness of about 5µm and it has adhesion strength to metal substrates higher than 1.5GPa leading to pristine abrasion resistance measured under knee and hip simulator tests compliant with ISO 14243 and ISO 14242 respectively. Titanium Nitride (TiN) is deposited with latest generation technologies showing a polycrystalline cubic structure with a fine and very dense structure, roughness (Ra) values below 0.05µm, ideal for articulating zones. The coating coverage is rather uniform on external surfaces whereas for inner surfaces a Ionbond proprietary technology can be applied in some cases. Ionbond can currently deliver coating service of “Medthin™ 01 TiN on Implants” from America, Europe and Asia and the coating properties/characteristics have been filed in a FDA master file (MAF) number 1413. The MAF can be referred upon request and common agreement with Ionbond.


Technical data |
|
---|---|
Material |
Titanium Nitride |
Applicable on following implant material |
Titanium, TAV, CoCrMo, 316 LVM, all SS |
Technologies |
PVD or CVD |
Color |
Gold |
Thickness, μm |
5² |
Hardness, GPa |
27 to 31 |
Phase composition |
Cubic, polycrystalline |
Surface texture, Ra |
<0.05 |
Coating coverage |
Mainly external surfaces |
Masking partial zones or over porous coat |
Possible |
Dissolvability |
Not noticed in serum |
Adhesion strenght, MPa |
>1500 |
Wear (abrasion) resistance, coating against UHMWPE |
>65% |
Porosity density, n/mm² and pore size, μm |
PVD Arc (<350, 1) or CVD (<50, 0.05)⁴ |
Reduction of allergic potential (CoCrMo, FeCrNi) |
<98% |
Surface wettability of TiN |
Similar to mirror polished CoCrMo |
Thermal oxidation resistance |
500°C |
Chemical oxidation resistance |
Resistance to PH>7, weaker in peroxide solutions PH<7 |
Resistance to sterilization |
All methods allowed |
Implant applications |
Othopaedic, spine & trauma |