Molybdenum Disulphide Coating
Working in conjunction with an established UK coating manufacturer, wallwork Newcastle Ltd have developed a molybdenum disulphide dry film lubricant coating for use in high load application aimed principally for use on articulated truck components, offshore products and aerospace components.
The coating manufacturer specialises principally in the aero engine and air frame sectors, industrial gas turbines, high temperature resistance and thermal barrier market. The diversification into the development of a coating for the articulated truck market was conducted over a period of 12 months. Extensive R+D has been undertaken on a collaborative basis to produce a Molybdenum Disulphide coating with the following properties:
- Excellent lubrication – Completely dry lubricating film resists pick up of dust or other harmful contaminants.
- High load carrying capability.
- Reduced risk of seizure.
- Excellent adhesion to the metal substrate.
- Low coefficient of a friction alleviates stick slip behaviour and provides uniform torque tension characteristics on threaded fasteners.
- High resistance to oils/fuels/grease.
- Enhanced corrosion protection in marine environments and to a broad spectrum of aggressive chemicals.
- Passive, containing no toxic lead or antimony compounds.
When combined with a MnP underlay coating, corrosion protection in excess of 500 hours has been achieved (ASTM B117-03, Salt Spray (Fog) Corrosion Testing on coating thickness 20-30 microns). The product developed is supplied exclusively to Wallwork Newcastle Ltd and will be commercially marketed as MT2936.
Whilst developed principally for articulated trucks the MT2936 can equally be used in offshore, marine, ACE (agricultural and construction equipment) and other general applications were other molybdenum disulphide coatings are regularly used.
In summary, MT2936 produces a durable bonded coating containing a synergistic of finely divided lubricating pigments in a tough, thermosetting resin binder. MT2936 is particularly suited to the lubrication and corrosion protection of metallic wear faces running against a variety of polymeric wear materials as well as fasteners, springs, pistons, bearings and pressings.
Key Steps in the MT2936 Coating Process