High Purity Tungsten Disulfide WS2 Powder CAS 12138-09-9, 99.9% | Cataniadagiocare

About


Tungsten Disulfide WS2:



Tungsten disulfide

This inorganic compound is made of tungsten, sulfur, and other elements.

Tungsten disulfide chemical formula

It is

WS2

. This compound forms part of the transition metal dihalides group. The rarest form of tungsten ore is it. This material is part of certain catalysts used for hydrodesulfurization and hydrodenitrogenation.


WS2 tungsten disulfide

Uses a layered structure, similar to MoS2 (or the same type) of MoS2, in place of a coordinationsphere with Watoms (instead molybdenum-atoms), in a triangular prism. This layered structure led to the formation of inorganic Nanotubes in WS2 after it was heated in 1992.

Most of the WS2 crystals are dark gray hexagonal with a layered appearance. Similar to its closely related MoS2, it is a dry oil lubricant.

Although WS2 was believed to be relatively stable under ambient air, recent studies on single-layer WS2 oxidation within the environment show otherwise. Photooxidation reactions are quick enough to transform WS2 in to tungstenoxide in just a few hours in the atmosphere and ambient light. One-layer WS2 absorbs visible wavelength light (660 nm/>1.88eV) and oxidizes it. To proceed with the reaction, you will need water and oxygen. Sulfuric acid and tungsten dioxide are the products of this reaction. Similar results were observed for other semiconductor transitional metal dihalides, such as MoS2, under atmospheric light.

A mixture of hydrofluoric and nitric acids can attack WS2. If heated in oxygen-rich conditions, WS2 will turn to tungsten dioxide. In the absence of oxygen, however, WS2 won’t melt and will instead decompose to tungsten trioxide. The decomposition temperature for WS2 is 1250°C.

It was traditionally used for the removal of monolayer WS2 using a chemical exfoliation process. That is, inserting lithium into n-butyl ligi (in hexane) and then removing the Li compound with ultrasonic water treatment. Treatment with various agents such as lithium halide or chlorosulfonic acids can help to shed WS2.

To receive the latest information, send us an inquiry

Tungsten disulfide


Prices


The buy tungsten


isulfide powder

In bulk.

Tungsten Disulfide details:


Tungsten Dioxide particle size: FSSS=0.4 to 0.0.7 mm, and FSSS=0.85 – 1.15 mm. 80nm

Tungsten Disulfide purity: 99.9%

W	S	Al	As	Cl	Cu	Fe	Ni	P	Si	O
74.12	25.82	0.001	0.002	0.03	0.002	0.005	0.002	0.002	0.003	0.002

It is simple.


Tungsten Disulfide WS2 produced?


1. Roasting decomposition method:

For 3 hours at 57-60°C, stir ammonia with water. Heat preservation lasts more than 16 hours. Ammonium tungstate is formed when hydrogen sulfide gases reacts to the generated ammonium. This results in ammonium Tetrathiotungstate, which can be decomposed into tungsten dioxide after high temperature roasting.

H2WO4+2NH3*H2O-(NH4)2WO4+2H2O

(NH4)2WO4+4H2S-(NH4)2WS4+4H2O

2(NH4)2WS4+3O2-2WS2+4NH3+2S+2SO2+H2O

2. Tungsten is very slow to react with liquid sulfur. You can make WS2 by passing sulfur gas to red hottungsten. Mixing tungsten with stoichiometric sulfur blossom is required to create WS2. It can then be reacted at 800C for 24hrs in nitrogen.

3. By heating the ammonium-tetrathiotungstate and decomposing it, under the condition that the air is isolated, the temperature increases from room to 700-1200. After it has been kept at that temperature for 24-48 hours, it’s then brought back to room temperature, with a temperature gradient between 30 and 110 degC/hour. Next, the material is crushed and discharged.

This method for making ultrafine, scaly, tungsten dioxide is simple to use, doesn’t pollute the environment, produces high-quality tungsten, with high purity and a hexagonal crystal structure.

Applicaciones


Tungsten Disulfide WS2:

Tungsten disulfide

This is how you make

tungsten disulfide lubricant, tungsten disulfide grease.


Tungsten Disulfide WS2 is an extremely smooth and dry film friction coating. Its friction coefficient is very low at 0.03, which makes it more efficient than graphite (PTFE), molybdenum dissolve (MoS2), and graphite (graphite). It has a remarkable performance when it comes to lubricity. You can use it for electronic equipment such as sensors, transistors, and photocatalysis. Tungsten dioxide powder is very soluble in water and alcohol.

Extrusion molds, plastic molds, and all other types of demolding use WS2.

Hydraulic oil can no longer be required. WS2 can work with any type of oil such as grease, hydraulic oil or silicone, and can even be combined with hydraulic oil. It retains fluid layers by having an affinity with them. It keeps oil and grease off the surface. This improves the lubrication.

Tolerable tolerances can be achieved on small parts when the thickness is below 1 micron.

Additionally, WS2 can be used for food processing as well as medical equipment.

WS2 is a high-speed process that replaces customer base material at ambient temperature. This does not cause the substrate to become warped or continuous.

For increased durability, you can use WS2 alone or with our PVD Hard Coating.

Tungsten Disulfide Powder Storage Conditions:


Tungsten Disulfide powder should not be exposed to the air. Damp reunion can affect dispersion performance of WS2 powder and its use. Additionally, WS2 powder must be kept away from stress.

Packing and Shipping Tungsten Disulfide WS2 Pulver:


We offer many packing options that are dependent on the Tungsten Dulfide Powder amount.

Tungsten Disulfide Powder Packaging:Vacuum Packing, 100g to 500g, or 1kg/bag at 25kg/barrel. Or as you request.

Tungsten Disulfide powder shipping:could ship out by sea or by air as soon as payment receipt is received.

Technology Co. Ltd. (), is a trusted supplier and manufacturer of chemical materials worldwide. We have more than 12 years experience providing high-quality chemicals, Nanomaterials, and sulfide powders.

High-quality products are what you want

tungsten disulfide powder

Please feel free and contact us to send an enquiry. ([email protected])