| Surface materials engineering

Techniques Surfaces, jobbing subsidiary of HEF Group, provides assistance and guidance to its customers in more than sixty sites across more than twenty countries: • Germany • Brazil • Canada • China • Spain • South Africa • France • Hungary • India • Italy • Japan • Malaysia • Mexico • Poland • Czech Republic • United Kingdom • South Korea • Swit

Liquid ionic nitriding 4/5 CLINTM 5 Coatings using PVD/PACVD technologies 6/10 Certess® Carbon 7 Certess® Nitro 7 Certess® Elec 7 Certess® Procem 8 Certess® Look 8 Certess® Optal 8 Certess® Eject 9 Certess® Life 9 Corralu® V 10 Certess® Blast 10 Femtosecond laser 11/12 Femtosecond laser 12 Functionalised Powders 13/14 Depton® 14 RomaxTM 14 Other Technologies 15/19 Phosphating 16 SDA® GraphlubTM 16 TeglissTM 16 DOTTM 16 Stanal® 400 HEF Patent 17 Delsun® HEF Patent 17 Corralu® B / Surtec 650 17 Nicalec Pechiney Licence 17 SULF BT® HEF Patent 18 MoapTM HEF Patent 18 Plasma Thermal spraying 18 ARC...

Ionic liquid nitriding 4 Today, the HEF group, with more than 60 years of development expertise in the area thermochemical treatments, is the world leader in the field of ionic liquid nitrocarborising. The HEF group’s nitrocarburising treatments are patented and marketed under the names F®, ARCOR®, TENIFER®, TUFFTRIDE®, MELONITE®, NUTRIDE® et QPQ®. These trademarks are brought together under the umbrella brand: CLIN™. They are offered by HEF throughout its international shaping network: "TECHNIQUES SURFACES®", including integration at the customer’s site, depending on the project. CLIN™ technologies...

THERMOCHEMICAL SURFACE TREATMENT FOR TRIBOLOGICAL APPLICATIONS Characteristics: The CLIN™ technologies make it possible to combine the properties of corrosion resistance, wear resistance and fatigue strength of steels and cast irons and at the same time enhance their tribological behaviour. Depending on the composition of the steel, hardnesses of up to 1200 Hv can be achieved. Corrosion resistance of up to 1000 h in a salt spray test (ISO 9227) can be achieved. The CLIN™ technologies make it possible to combine multiple advantages in a single treatment: • Seizure resistance (compound layer of...

PVD/PACVD Technology coatings 6 For over 50 years, HEF has been developing and innovating in PVD - PACVD technologies. This technology is used in all types of industries: mobility, construction, medical, defence & space, low-carbon energy, etc. Physical vapour deposition and plasma-assisted chemical vapour deposition (PVD and PACVD) are environmentally friendly surface treatment technologies, allowing thin layer deposition under vacuum. They enable coatings to be obtained with thicknesses from a few nanometres to a few tens of microns and hardness from 1000 to 5000HV. Thanks to its mastery of...

CERTESS® CARBON SURFACE TREATMENT FOR TRIBOLOGICAL USE CARBON layers correspond to DLC (Diamond Like Carbon) coatings for tribological use. These coatings usually consist of several sub-layers of different materials: Cr, CrN, WC, WCC, combined with a top layer of hydrogenated (a-C:H) or non-hydrogenated (ta-C) amorphous carbon. Characteristics: • Hardness from 500 to 6000 HV • Excellent friction properties • No hydrogen embrittlement • Respect of dimensions and roughness Materials suitable for treatment: Steels and cast irons - Carbides • Dense sintered materials • Inconel alloys • Aluminium,...

CERTESS® PROCEM® SURFACE TREATMENT FOR ELECTROMAGNETIC SHIELDING PROCEM® layers are conductive multilayer metallic coatings designed for the electromagnetic shielding of polymers and composite materials. These PVD treatments make it possible to reconcile these various requirements while providing other advantages linked to the implementation process: the dimensional accuracy, the quality of any sparing, the negligible impact on the weight of the objects. Characteristics: • Discharge of electrostatic charges • EMI shielding • Multifunctionality (resistance to chemical aggression, friction or abrasion,...

CERTESS® EJECT SURFACE TREATMENT FOR MECHANICAL USE OF MOULDS EJECT layers are coatings developed for plastic and aluminium shaping tools to ensure very low wear in the injection area and easy unmoulding for many materials. The aim is to increase tool life, improve the quality of the parts produced, reduce lubrication, reduce tool maintenance and encourage the reuse of tools. Characteristics: • Hardness from 2000 to 6000 HV • Resistance to abrasive and adhesive wear • Chemically inert • Thermal stability up to 800°C • Resistance to oxidation Materials suitable for treatment: • Steels and cast...

VACUUM DEPOSITION FOR CORROSION PROTECTION Deposition of a pure aluminium layer of 10 to 50 µm. Characteristics: • Corrosion protection • Electrical continuity Notes: Dimensions from one centimetre to 2 metres. Beyond that, please consult us. Additional treatment possible (SiOx, chemical conversion, Surtec 650, Corralu, varnish, chetylic alcohol). Materials suitable for treatment: Steels • Stainless steels • Aluminium alloys • Refractory alloys • Titanium • Any metal compatible with vacuum deposits • Possible application on plastics, glass and ceramics Examples of use: • Fighter aircraft structural...

Laser process We use laser processes to develop specific textures and functionalities requested by our customers. This involves creating a dedicated process, accompanied by in-depth studies, to achieve the desired final functionality. Our laser processes are unique in that they deliver very high power in a very short time. This unique property enables us to sublimate the material while controlling thermal effects, and this for all materials, from the hardest to the most fragile. HEF can thus modify the surface of materials in multi-scale dimensions ranging from the micrometer to the nanometer....