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The Influence of Heat-Resistant Ceramic Coatings on Mechanical Properties of Niobium Alloys. (CROSBI ID 498962)

Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija

Bukhanovskii, V. ; Mamuzić, I. ; Borysenko, V. ; Kharchenko, V. The Influence of Heat-Resistant Ceramic Coatings on Mechanical Properties of Niobium Alloys. // Materials and Metallurgy, Summaries of Lectures / Mamuzić, Ilija (ur.). Zagreb: Hrvatsko metalurško društvo, 2004. str. 218-x

Podaci o odgovornosti

Bukhanovskii, V. ; Mamuzić, I. ; Borysenko, V. ; Kharchenko, V.

engleski

The Influence of Heat-Resistant Ceramic Coatings on Mechanical Properties of Niobium Alloys.

The strength, deformability, and load-carrying capacity of niobium alloys of the Nb-W-Mo-Zr and Nb-Mo-Zr-C systems both in the initial state and with ceramic slip coatings based on molybdenum and hafnium silicides have been studied under conditions of short-term and long-term static tension in vacuum, inert medium, and in air in the temperature range from 290 to 2070 K. The investigation of the damage accumulated in the niobium alloy/silicide-ceramic coating composites under conditions of high-temperature tension revealed that cracks in the coating initiate already at early stages of plastic deformation (up to 0, 5 %). As a result of the investigation of creep and long-term strength of the composites, the values of the limits of 0, 5 % and 1, 0 % creep were obtained at temperatures of 1770 and 2070 K for the test time of 0, 1 ; 1, 0 and 10 hours. For instance, the creep stress of the niobium alloy of the Nb-W-Mo-Zr/silicide-ceramic coating composite inducing strains of 0, 5 % within the test time of 1 hour in argon is 25 MPa at 1770 K and 8 MPa at 2020 K. In air, the above values are higher accounting for 30 MPa at 1770 K and 10 MPa at 2020 K.

mechanical properties; niobium alloys

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Podaci o prilogu

218-x.

2004.

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objavljeno

Podaci o matičnoj publikaciji

Materials and Metallurgy, Summaries of Lectures

Mamuzić, Ilija

Zagreb: Hrvatsko metalurško društvo

Podaci o skupu

6. Međunarodni simpozij Hrvatskog metalurškog društva, SHMD 2004 : materijali i metalurgija

poster

20.06.2004-24.06.2004

Šibenik, Hrvatska

Povezanost rada

Metalurgija