Coating materials for cutting tools

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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