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Owing to high hardness SiC has a number of applications such as in cutting tools, jewellery, automobile parts, structural materials etc.
Furthermore, Inclusion of the amount of alumina particles in the matrix decreases the grain size.

Extensive grinding experiments with brazed diamond tools show that there are different kinds of failure, grain fracture, interface fracture between diamond and brazing alloy and abrasion of diamond cause the diamond tools loose effectiveness and decrease grinding efficiency during application.
With the development of reaction, the thickness of carbide Cr3C2 layer is increasing, the number of element C spreads carbide Cr3C2 is decreasing, at the same time, the concentration of C on the surface of carbide Cr3C2 layer has a certain decline, a small quantity of carbide Cr7C3 begins to from, as it just shows in Fig.3.

Preparation techniques and mechanism of the synthesized porous ceramics Porous ceramic is a new functional ceramic material with a large number of closed or connected holes.
Y.C.Dong et al [15] studied the characteristics of high temperature phase change process of fly ash grain coated with aluminum hydroxide and the technical preparation process of porous mullite ceramics by using bauxite as aluminium source and the fly ash in 2008.

Despite this layout is not considered optimal due to a number of statistic characteristics, it was implemented because of its cost-effectiveness.
A layer of fine-grained concrete with the expanded clay dust additive should be formed in a centrifuge no later than 20-30 minutes after gauging the mix with water.

b a Fig. 2: (a) Stress relaxation after deformation of Al-bearing TRIP steel with e = 0.2 and = 1 sec-1; the numbers indicate test temperatures; (b)comparison between calculated tinc-values and those determined from stress relaxation curves shown in (a) The calculated incubation times increase with decreasing temperature, strain rate and strain, which is consistent with the general considerations of SRX.
Most of them can be summarized in the form of the following equation , (5) where tip is the interpass time, D0g is the initial austenite grain size and A is the coefficient describing the effect of steel chemical composition.

Introduction The rising number of traffic and sports related bone injuries has increased the demand for biomedical implants in orthopaedic surgeries [1].
In Fig. 2c, the TiNi powder mixture exhibits uniform dispersion of Ti particle in Ni matrix with no agglomeration or growth of grains.

Several thermomechanical mechanisms that have been suggested as potential hot-spot sources include: friction between adjacent grains, jetting of material fragments across voids, hydrodynamic pore collapse, viscous heating and internal shear, and shock interactions at density discontinuities [1-2].
Although a large number of reports dealt with the experimental results of the width of reaction zone in the process of stable detonation [12-15], few works focused on its varying in the process of ignition.

The resulting supports were denoted as TiAl(1/4), TiAl(1/8) and TiAl(1/16), the number in the bracket represent the molar ratio of Ti to Al.
Thus, TiO2 can grow on the surface of r-Al2O3, which is beneficial to Ni2P crystalline grain growing up.

A few articles are available in literature presenting failure analysis based on a substantial number of samples of real die breakdowns [13, 14].
Towards the inner part of the die, the structure is characteristically fine grained, with restored martensite and carbides, which are uniformly distributed (Fig 7, b).

Carbon atoms formed at the surface dissolve in and diffuse through the metal particle thus causing a pressure build up at the dislocations and the grain boundaries that may exceed the tensile strength of the metal.
The number of radical sites on the coke surface depends on the gas phase composition and on the actual surface area of the coke layer.