Coating Types

PVD Coating Types	Coating Feature	Coating Hardness HV	Coating Thickness μm	Friction Coefficient	Heat resistant Temperature	Coating Color	Applications
TiN	single - layer	2300	2-3	0.6	600	Golden	high hardness, wear resistance and oxidation resistance; suitable for cutting tool, and is also suitable for forming mold and abrasion resistance workpiece.
TiCN	single - layer	2800	2-3	0.3	500	Brown Gray	lower internal stress , high toughness, and good lubricating properties; require lower friction coefficient and high hardness of the processing environment.
TiAlN	single - layer	3100	2-3	0.3	750	Purple Blue	Fever rigid chemical stability, excellent resistance to oxidation and wear resistance, suitable for dry cutting occasions.
CrN	single - layer	1800	2-3	0.2	700	Silver Gray	Significantly strong lubricating properties and high temperature characteristics, suitable for cutting tool of copper-based metal, and corrosion-resistant coating of parts of wear-resistant.
DLC	single - layer	2500	1-2	0.1-0.2	300	Black Ash	Excellent wear and corrosion resistance, low friction coefficient, combined with strong matrix. For the tool, usually with TiAlN base body with the use, for processing non-ferrous metals, such as graphite material.
Super A(AHNO)	multilayer	3100	2-3	0.3	800	Blue Violet	AHNO unique coating formulations, multilayer composite high alumina coating high hardness, high wear resistance, low friction coefficient, etc. advantages. Stability at high temperatures, especially suitable for high-speed cutting occasions.

Coating type of cutting tool divided into the types of physical coating (PVD) and chemical coating types (CVD) in two ways, according to the principle, under normal circumstances, the physical coating types (PVD) using more.

The physical coating types (PVD)
PVD coated cemented carbide tool life can be extended under the same conditions
Even if the sharp edge can cover this coating and the substrate when the coating does not occur softening metamorphism

Chemical coating types (CVD)
Special tough crystalline organization, improve the wear resistance, fracture resistance
wide versatility, reduce the total amount of the required tools
The outermost layer is a special part of the dense layer of the titanium compound (refractory attached sexual)
outer layer of alumina the (particulate refractory attached sex) (rake face wear resistance)
inner tough titanium carbonitride new coating technology thick film
(Flank wear) (the rake face wear resistance)
carbide substrate

Improve tool integrated mechanical performance requirements difficult to meet due to a single coating types, coating types will become more diversified, composite; meet different machining requirements, coating types will be more complex, more targeted; in single component coating thickness will increasingly thin composite coating types and gradually become Nan crystallization; coating process temperature is getting lower and lower, the tool coating process will be more reasonable direction.

Chinatungsten Online can provide various sizes and grades of cemented carbide cutting tools, non-standard products are also customized according to customer requirements. Welcome to consult and purchase sales@chinatungsten.com, sales@xiamentungsten.com.

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