Influence of nanosized particles of zirconium and aluminum oxides on the properties of materials based on the Si-B4C-ZrB2 composition

2020 ◽  
pp. 18-22
Author(s):  
A. N. Nikolaev ◽  
I. B. Ban'kovskaya ◽  
S. N. Perevislov
Keyword(s):  
Mechanical Properties ◽  
Carbon Materials ◽  
Protective Coatings ◽  
Physicomechanical Properties ◽  
Nanosized Particles ◽  
Aluminum Oxides ◽  
Reaction Method ◽  
Glass Forming ◽  
Properties Of Materials ◽  
Surface Glass

The effect of nanosized particles of ZrO2 and Al2O3 on physicomechanical properties (elastic modulus, flexural strength, microhardness), phase composition, and also the microstructure of materials based on Si-B4C-ZrB2 is studied. After heat treatment in air in an electric furnace, a borosilicate glass-forming melt was obtained by a reaction method, which had an encapsulating effect on the starting components. As a result, gradient glassceramic  materials were obtained in which the surface glass-ceramic layer protects the underlying layers from oxidation. This approach can be used to obtain protective coatings for carbon materials. It is shown that the  introduced additives improve the mechanical properties  of the composites.

LABORATORY TESTS OF THE PHYSICAL-MECHANICAL PROPERTIES OF MATERIALS FOR REMEDIAL JOBS

2020 ◽  
pp. 58-63
Author(s):  
M.A. Druzhinin ◽  
◽  
G.V. Okromelidze ◽  
O.V. Garshina ◽  
I.A. Kudimov ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Laboratory Tests ◽  
Mechanical Properties Of Materials ◽  
Properties Of Materials

Composite cladded powders for spraying of protective coatings

2019 ◽  
pp. 59-64
Author(s):  
E. Yu. Gerashchenkova ◽  
T. I. Bobkova ◽  
E. A. Samodelkin ◽  
B. V. Farmakovsky
Keyword(s):  
Tungsten Carbide ◽  
Gas Phase ◽  
High Speed ◽  
Protective Coatings ◽  
Powder Materials ◽  
Nanosized Particles

The paper presents results of the development of technology for producing cladded and surfacealloyed powder materials. High-speed mechanosynthesis of matrix powders of FeCrAl and solid nanosized particles of tungsten carbide occurs in a disintegrator in the presence of an active gas phase (nitrogen).

New MgLi based Mg–Li–Cu–(Y, Gd) BMGs: Preparation, glass forming ability and mechanical properties

2011 ◽  
Vol 357 (10) ◽  
pp. 2182-2186 ◽  
Author(s):  
Peng Gao ◽  
Zhu Xue ◽  
Guangbo Liu ◽  
Jin Zhang ◽  
Milin Zhang
Keyword(s):  
Mechanical Properties ◽  
Glass Forming Ability ◽  
Glass Forming

scholarly journals Effect of Sn addition on the glass-forming ability and mechanical properties of Ni-Nb-Zr bulk metallic glasses

2011 ◽  
Vol 56 (36) ◽  
pp. 3926-3931 ◽  
Author(s):  
DengKe Li ◽  
HaiFeng Zhang ◽  
AiMin Wang ◽  
ZhengWang Zhu ◽  
ZhuangQi Hu
Keyword(s):  
Mechanical Properties ◽  
Metallic Glasses ◽  
Bulk Metallic Glasses ◽  
Glass Forming Ability ◽  
Glass Forming

Optimizing the Shape and Size of Cruciform Specimens Used for Biaxial Tensile Test

2014 ◽  
Vol 658 ◽  
pp. 167-172 ◽  
Author(s):  
Liviu Andrusca ◽  
Viorel Goanta ◽  
Paul Doru Barsanescu
Keyword(s):  
Mechanical Properties ◽  
Tensile Test ◽  
Continuous Monitoring ◽  
Biaxial Tension ◽  
Cruciform Specimen ◽  
Testing Method ◽  
Biaxial Tests ◽  
Properties Of Materials ◽  
Failure Theories ◽  
Shape And Size

Testing cruciform specimens subjected to biaxial tension is one of the most widely used experimental techniques and more accurate at this time to determine the mechanical properties of materials and to verify the failure theories. This type of experiment allows the continuous monitoring of behavior of materials from the beginning of deformation until fracture under different ratios of forces and directions of the deformation, which transforms it into a very versatile testing method. We have varied the number of parameters and their values in order to achieve a uniform distribution of biaxial state of stresses and strains in the area tested. In theory, any material can be tested by stretching a biaxial cruciform specimen, but must be investigated in what way the shape of the specimen influence the data obtained. In this paper are presented the requirements that must be fulfilled by the samples used for tensile / compression biaxial tests and the design of cruciform specimens through FEA that meet these demands.

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