tungsten disulfide

tungsten disulfide

[′təŋ·stən dī′səl‚fīd]
(inorganic chemistry)
WS2 A grayish-black solid with a melting point above 1480°C; used as a lubricant and aerosol.
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Only as recently as 2012, the first field effect transistors (FETs) based solely upon 2D TMDCs were reported - using molybdenum or tungsten disulfide obtained by exfoliation of individual layers from crystals, combined with boron nitride gate dielectric and graphene electrodes.
The universal technique can be used with a range of different 2-D materials, including hexagonal boron nitride, tungsten disulfide, and molybdenum disulfide.
Mold-component suppliers offer pins with various types of lubricous coatings, such as thin dense chrome, molybdenum disulfide, DLC (Diamond-Like Carbon), tungsten disulfide (WS2), titanium nitride (TiN), black oxide, and Dicronite dry lube.
More recent alternatives include Hexagonal Boron Nitride ("HBN") and Tungsten Disulfide ("WS2").
The heating of tungsten disulfide (Figure 2(a)) is characterized by a negligible leeway of the thermogravimetric curve (curve 1) and by a small endothermic effect (curve 2) of sulfur trace melting.
In general, antifriction coatings are composed of submicron-sized solid lubricant particles, typically molybdenum disulfide (Mo[S.sub.2]), tungsten disulfide (W[S.sub.2]), graphite, or polytetrafluoroethylene (PTFE).
Depending on the application, the ball screw is provided with either vacuum compatible grease or a dry lubricant coating such as tungsten disulfide or molybdenum disulfide.
Most people are familiar with oil's ability to grease moving parts, but some of the best lubricants used in industry today are solids, such as tungsten disulfide. As powders, these solids can be used to coat surfaces, where their slippery layers of molecules allow metal parts to slide past each other easily.
We observed negative trions in a two-dimensional tungsten disulfide monolayer excited by a laser beam, said ultrafast laser spectroscopist Abdelaziz Boulesbaa, who co-led the study with theorist Bing Huang and consulted with laser spectroscopy expert Alex Puretzky.
These particles, based on safe tungsten disulfide, provide super-lubricating properties to oils and greases and are sold as concentrates or paste either to lube manufacturers as an additive or as after-market products.
says it will unveil a new release coating that combines the hardness of its WS2 tungsten disulfide coating with the corrosion-fighting kick of its Nicklon-Plus co-deposited nickel/PTFE coating.
Now materials scientists have discovered a molecular cage with no carbon whatsoever -- tungsten disulfide. This inorganic semiconductor will also curl up to form cylindrical and closed polyhedral structures, says Reshef Tenne at the Weizmann Institute of Science in Rehovot, Israel.