This paper reviews pertinent research in the area of theoretical model
ling and experimental studies of the various properties of titanium ni
tride coatings. A brief description of methods commonly used for the d
eposition of TiN coatings is discussed first. The important properties
of these coatings are presented next. Various theoretical models for
hardness, adhesion and residual stresses, and experimental work, both
in support of these models and on other relevant properties such as co
rrosion, abrasion and colour, are cited and discussed. Finally, resear
ch issues and developmental needs in pertinent areas are identified an
d explicated.