Tool with a molybdenum sulfide containing coating and method for its production

A method of producing a coating by chemical vapor deposition for use as a tool, comprising the steps of:

• a) heating a base body composed of a material selected from the group which consists of hard metals, cermets, ceramics and steel and coated with TiN in a nonreactive gas mixture of hydrogen and argon to a temperature between 500° C. and 900° C.;
• b) establishing a pressure during the chemical vapor deposition of 0.1 kPa and 50 kPa around said body:
• c) passing a gas mixture over the head body or admitting a gas mixture to the head body for the chemical vapor deposition and wherein the gas mixture comprises a molybdenum halogenide in a volume proportion of 0.5 to 5%, hydrogen and argon to deposit by chemical vapor deposition a layer which is constituted essentially of metallic molybdenum;
• d) thereafter cutting off a supply of molybdenum halogenide and feeding to an atmosphere in the region of said layer a sulfur containing gas with a volume proportion of 1% to 10% together hydrogen and argon for a length of time to convert the molybdenum os said layer at an upper edge region into hexagonal MoS2;
• and
• e) repeating steps a) to d) to build up a coating on said body with a predetermined number of layers.