Excellent adhesion properties for coatings of all types

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These micro photos show the adhesion properties of each coating to a previously treated coupon sample.

TiAlN - Adhesion excellent - one small anomaly at T-41 indent location.
(This is the current preferred coating by field die casters because of its high oxidation temperature and expansion characteristics)
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CrN - Adhesion excellent - minor anomalies outside indent location.
(This is another preferred coating by field die casters that also exhibits good flexibility and adequate oxidation temperatures for use in die casting)
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TiN - Adhesion Good - No anomalies
(used by some die casters, however, low oxidation temperature and limited expansion capability do not permit this coating to be used on die casting die inserts or high temperature applications. Resulting coating failures have galvanic reaction characteristics)
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CrC - Poor adhesion and non-uniformity of thickness
(At one time was considered an equal to CrN. Thickness of coating varied from 1.4 to 8.8 microns and exhibited)
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