The benefits of TiN and TiCN coatings are list in high-temperature applications such as the machining of exotic metals. TiAlN coatings, on the other hand, perform better at higher temperatures. This article describes the properties of TiAlN that make it the coating to use with high-temperature work. The article also reviews specific applications where shops have used TiAlN to increase tool life and productivity.
Researchers studying the performance of diamond coatings have found a number of factors of the coating process that determine the ultimate success of the coating. This article looks at factors such as substrate preparation, stresses in the coating and substrate and the diamond coating's formation patterns.
The presence of an eta phase between a coating and the substrate is generally considered harmful to coating adhesion. However, this article argues that when the formation of the eta phase is carefully controlled, it can actually enhance adhesion. The conditions that promote the formation of beneficial eta phase are explained.
Researchers report on their study of coating performance. Their tests of TiN, TiCN and TiAlN coatings involved turning Inconel 718, medium-carbon steel and ductile cast iron. The wear rates and failure mechanisms of the coated tools are compared.
The PVD and CVD processes produce coatings with specific strengths and weaknesses. This article compares the processes and attempts to correct some common misconceptions about CVD coatings. The findings of a survey on tool coaters' use of coating materials and methods are also reported.
To support growing demand, manufacturers have committed extensive resources to HSS tools, making them more reliable, with improved quality, lower production costs and shorter lead times.
CemeCon Inc. held a ribbon-cutting ceremony Jan. 17 to officially open its new 15,000-sq.-ft. headquarters and CVD-diamond coating facility in Big Flats, N.Y. The opening marks the fourth expansion of production capabilities since the U.S. subsidiary was opened in 1998 and the third increase in capacity for CVD-diamond processing since 2014.
