Properties of MoS2 refined by chemically processing molybdenite from a copper-bearing ore are compared to those of MoS2 from the primary commercial material in the United States. The properties include crystal structure, chemical composition, oxidation resistance, and lubricating ability in bonded solid lubricant films. Both materials have the same crystal structure and similar chemical compositions. However, the chemically processed MoS2 does not have the carbon impurities present in the other MoS2. This new material performed just as well as the commercially available MoS2 in three types of bonded solid lubricant films in wear-life tests.

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