Characteristics of molybdenum disulfide


Molybdenum disulfide may cause electrochemical corrosion of metals when used in humid environments, and its performance will be affected at low temperatures and humid climates. Graphite can also be used as a solid additive, but molybdenum disulfide has a much smaller friction coefficient than graphite, so it causes less friction resistance. At high temperatures, molybdenum disulfide will oxidize to form molybdenum trioxide; it does not have lubricity. The properties of molybdenum disulfide can be fully developed under dry, high temperature, and vacuum conditions. In the presence of high concentration oxygen, the oxidation rate of molybdenum disulfide increases and becomes molybdenum trioxide. In the air, below 300, the molybdenum disulfide oxidation rate is prolonged, and the property is very stable. Above 400 degrees Celsius, molybdenum disulfide slowly began to oxidize to produce molybdenum trioxide; after that, the higher the temperature, the more serious the oxidation degree and oxidation rate, up to 600 degrees Celsius. Molybdenum disulfide rapidly oxidized in the air. In addition to humidity and temperature, particle size also affects the oxidation rate of molybdenum disulfide. Under the same conditions, the finer the powder, the faster the oxidation rate. Although molybdenum trisulfide does not have lubricity, it will not cause noticeable wear on the metal friction surface. Therefore, molybdenum disulfide can still maintain a specific lubrication performance after partial oxidation to molybdenum trisulfide. If you are looking for high quality, high purity and cost-effective molybdenum disulfide, or if you require the latest price of molybdenum disulfide, please feel free to email contact mis-asia.

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