EFFECT OF TINAIUM NITRIDE COATINGS ON STRESS STRUCTURAL
INHOMOGENEITY IN OXIDE-CARBIDE CERAMIC.
PART 2. CONCENTRATED FORCE ACTION
M. A. Volosova,
S. N. Grigor’ev,
and V. V. Kuzin
Translated from Novye Ogneupory, No. 10, pp. 77 – 82, October 2014.
Original article submitted May 28, 2014.
The effect of a coating on stress structural inhomogeneity in an oxide-carbide ceramic under action of a con
centrated force load is studied. A significant effect is revealed for a coating on properties governing stress
structural inhomogeneity in ceramic. A requirement is noted for considering stress structural inhomogeneity
in designing objects made from oxide-carbide ceramic with a coating.
Keywords: ceramic, coating, stress structural inhomogeneity, concentrated force, structural element.
The aim of this study is to analyze the effect of titanium
nitride coatings on the stress-strained state of oxide-carbide
ceramic structural elements under action of a concentrated
force. Solution of this scientific problem supplements fea-
tures of the effect of force loads on the stress-strained state of
ceramic materials studied in [1 – 4].
The procedure for revealing and analyzing structural
inhomogeneity of stresses s
and stress intensity s
in a surface (surface layer) of ceramic structural elements un
der action of an external load has been performed in .
More detailed circumstances of this procedure are provided
in [6 – 9]. Analysis of the effect of other external loading
schemes will be provided in subsequent articles.
RESULTS AND DISCUSSION
A plate of oxide-carbide ceramic without a coating (sys
)–SCh32) and a plate with a 5 mm
thick coating of titanium nitride (system (TiC–MgO–
)–TiN–SCh32) under action of a concentrated force F
operating at angle b, deforms by the scheme shown in Fig. 1.
A grain from original position 3 descends and is extruded
from the carcase, occupying position 3
. For clarity in Fig. 1
an arrow shows the path of CP1 movement from original po-
sition l into deformation position l
, and also the magnitude
of its horizontal u
displacements. It is seen that the
greatest movement of CP1 occurs in a vertical direction.
The nature of changes in stresses s
CP of the surfaces of various structural elements of ceramic
Refractories and Industrial Ceramics Vol. 55, No. 5, January, 2015
1083-4877/15/05505-0487 © 2015 Springer Science+Business Media New York
Part 1 published in Novye Ogneupory No. 8 of 2014, pp. 28 – 31.
FGBOU VPO Moscow State Technological University Stankin,
Fig. 1. Examples of deformation for the system (TiC–MgO–
)–TiN–SCh32 under action of a concentrated force F = 0.01 N
(b = 45°).