Electron microscopy
 
Coating Materials for Cutting Tools
- Practical Electron Microscopy and Database -
- An Online Book -
Microanalysis | EM Book                                                                                   http://www.globalsino.com/EM/        


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Table 1325. Coating materials for cutting tools.

Best materials (in order) Properties
Al2O3, TiN, TiC
Oxidation and corrosion resistance; high-temperature stability
Al2O3, TiN, TiC Crater-wear resistance
TiC, TiN, Al2O3 Hardness and edge retention
Al2O3, TiC, TiN Abrasion resistance and flank wear
TiN, Al2O3, TiC Low coefficient of friction and high lubricity
TiN, TiC, Al2O3 Fine grain size
Al2O3 Good wear and oxidation resistance; good thermal barrier
TiAlN Improved hot hdardness and chemical resistance relative to TiN
TiB2 Resists built-up edge in aluminum machining
TiC Wear resistance
TiCN Harder than TiN; improved wear resistance and adhesion to carbide substrate
TiN Primarily used to indicate tool wear when its gold color is worn off
ZrO2

Good thermal and chemical resistance properties

 

 

 

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