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1769642 
Journal Article 
Investigations of suitable hard coatings on nickel-based single-crystal superalloy (CMSX-4) 
Boota, M; Gaebler, Jan; Schaefer, L; Keunecke, M 
2012 
1 
Surface and Coatings Technology
ISSN: 0257-8972 
207 
300-304 
WOS:000309501600043 
Nickel-based superalloys are most widely used for hot parts
in aircraft turbines. The largest use of coatings on superalloys is on the components of the hot
section. In the present study, we have investigated hard coatings on nickel-based single crystal
superalloy (CMSX-4) for the development of advanced cutting tools, because CMSX-4 can be supplied
with unilateral pores. The pores shall act to provide coolant (fluid or gases) through the tool
directly to the cutting zone. To provide CMSX-4 with sufficient wear resistance for tool
applications we have investigated aluminium titanium nitride (AlTiN) films deposited by reactive
magnetron sputtering as well as super hard microcrystalline diamond films deposited by hot-
filament activated chemical vapour deposition (HFCVD), using a silicon carbide (SiC) interlayer.
The deposited films were characterized with respect to film adhesion, mechanical properties,
surface morphology and microstructure. (c) 2012 Elsevier B.V. All rights reserved. 
Nickel; based superalloy (CMSX-4); Interlayers; Interfaces; Cutting tools; Diamond; Titanium aluminum nitride (AlTiN)