Outlook of oxide-aluminum coating application for wear resistance increase of the machine parts and cutting tool

The attempt to use the wear-resistant properties of Al/sub 2/O/sub 3/ coatings for machine tools production is well known. The Al/sub 2/O3 coating is a part of a double coating of TiC and Al/sub 2/O/sub 3/, being applied on hard-melted plates. Here, the authors examine the use of the plasma arc deposition process in producing such wear resistant coatings for cutting tool applications.