MoS2 Powder (Molybdenum disulfide powder)

Molybdenum disulfide (MoS2) is grayish black mineral composed of one molybdenum atom (Mo) and two sulfur atoms (S) in layers through the natural sulfurization of metal molybdenum underground.
MoS2 molecule is extremely small of 6.26Å, whose particle (0.4μm) has multiple layers (600-700 molecule layers).
These layers are easy to come off and each of them has a strong bond,which make the characteristics of lubricant agent.

 

LM-11 Technical (Average particle size 3.0-4.0 µm: Fisher No.)
LM-12 Technical Fine (Average particle size 0.7 µm : Fisher No.)
LM-13 Super Fine (Average particle size 0.4 µm : Fisher No.)

 

MoS2 is powder of the solid lubricant.
This powder consists of flat particles of low friction.
With this particle covers the metal surface, prevents metal-to-metal contact and protects the metal surface.

 

Product number	LM-11	LM-12	LM-13
Product name	Z Powder	NeO Z Powder	SM Powder
Properties	Purity 98.2% min. Average particle size  3～4μm（Fisher No）  30μm（Microtrac） PH value 7.0	Purity 98.0% min. Average particle size  0.7μm （Fisher No）  6μm（Microtrac） pH value 6.0	Purity 98.0% min. Average particle size  0.4μm（Fisher No）  1.5μm（Microtrac） pH value 5.3
PV value (MPa･m/sec）	92
Heatproof temperature (℃)	-180 - 450℃　 In inert gas 1,100℃
Withstand load (MPa)	2,842
Coefficient of friction (μ)	0.03
Main applications	Addition to oil, grease, etc. Compounding with plastic, various kinds of rubber, etc. Addition to sintered metal or carbon Lubrication at very low temperature, in ultra-vacuum.

 

Measurement method of particle size

The most common measuring method is performed by using gaps between the particles. Powder has gaps between each other's particles, even if the powder is compressed, the gaps still remain. If large and small particles are distributed to be able to fill the gaps, the total volume of the gaps becomes small. Therefore, if the gap volume is measured, the distribution of the particles’ size can be inferred. The method is that to compress the powder with a constant air pressure, read the pressure drop at that time, the air permeability (Porosity = Ratio of the gap volume) will be obtained and then calculate the average particle size. When the particle shape is considered, this method is also an effective method for powders that are not spherical shape.

Method with using laser diffraction This method is that to irradiate a laser beam with a constant wavelength to the particle, and calculate the particle size and the particle size distribution from the pattern of scattered light intensity.
Actual particles are different in shape in each particle, so a lot of particles are measured in the same method, the sizes are determined statistically, and then calculate the diameters of various shapes into spheres. It is a main method for particle size measurement, and is a high effective method for particle size distribution measurement.