Results 91 to 100 of about 5,825 (220)

Improving Ballistic Resistance of Armor Steel by FCAW with Hardfacing Alloys of Fe–Mo–Mn–B–C System

open access: yesManagement Systems in Production Engineering
Armor steels can be strengthened against modern ballistic threats through surface hardfacing with advanced Fe-based alloys. This study develops a series of flux-cored arc welded (FCAW) hardfacing alloys in the Fe–Mo–Mn–B–C system to enhance the ballistic
Prysyazhnyuk Pavlo   +7 more
doaj   +1 more source

«Матеріали для роботи в екстремальних умовах – 6», міжнародна наукова конференція. [PDF]

open access: yes, 2016
It was investigated the structure, phase and chemical composition, thickness diffusion boride layers obtained after boriding and complex saturation boron and copper with simultaneous action an external magnetic field (EMF) on hard alloy T5K10.
Гриненко, К. М.   +4 more
core  

Axial residual stresses in boron fibers [PDF]

open access: yes
The axial residual stress distribution as a function of radius was determined from the fiber surface to the core including the average residual stress in the core.
Behrendt, D. R.
core   +1 more source

Ceramic material suitable for repair of a space vehicle component in a microgravity and vacuum environment, method of making same, and method of repairing a space vehicle component [PDF]

open access: yes, 2009
A precursor of a ceramic adhesive suitable for use in a vacuum, thermal, and microgravity environment. The precursor of the ceramic adhesive includes a silicon-based, preceramic polymer and at least one ceramic powder selected from the group consisting ...
Easler, Timothy E., Riedell, James A.
core   +1 more source

Boriding of Ti-xNb alloys: Influence of Nb on the features of boride layer

open access: yesInternational Journal of Refractory Metals and Hard Materials
In this study, Ti-xNb (x = 0–40 wt%) alloys produced by the powder metallurgy were borided with the aim of clarifying the effect of Nb on the structural and mechanical properties of the boride layer. After smearing the paste prepared from nano boron powder on the surfaces of the alloys, boriding was conducted at three different temperatures (900, 1000 ...
Batuhan Sorusbay   +6 more
openaire   +2 more sources

High-efficiency, low-temperature cesium diodes with lanthanum-hexaboride electrodes [PDF]

open access: yes
Lanthanum hexaboride electrodes in 1700 K cesium diodes may triple power outputs compared with those demonstrated for nuclear thermionic space applications. Still greater relative gains seem possible for emitters below 1700 K.
Morris, J. F.
core   +1 more source

Compatibility of refractory materials for nuclear reactor poison control systems [PDF]

open access: yes
Metal-clad poison rods have been considered for the control system of an advanced space power reactor concept studied at the NASA Lewis Research Center. Such control rods may be required to operate at temperatures of about 140O C.
Sinclair, J. H.
core   +1 more source

Kinetics of Growth and Mechanical Characterization of Hard Layers Obtained on the Surface of AISI H13 Steel by the Boriding Process Using a Non-Commercial Mixture

open access: yesLubricants
Boriding is a thermochemical process that improves the surface properties of metallic materials, such as wear resistance, hardness, and Young’s modulus. The current work evaluated the kinetics of boride layers formed by boriding on AISI H13 steel.
Yesenia Sánchez-Fuentes   +8 more
doaj   +1 more source

Influence of the Amount of Master Alloy on the Properties of Austenitic Stainless Steel AISI 316L Powder Sintered in Hydrogen [PDF]

open access: yes, 2017
AISI 316L austenitic stainless steel powder was modified with four different amounts of boron (0.1; 0.2; 0.3; 0.4 of wt. %) in the form of MasterAlloy micro-powder, and was sintered in a pure dry hydrogen atmosphere in order to obtain high density ...
Kazior , Jan, Skaloń , Mateusz
core  

Microarc surface alloying of tool steels

open access: yesMATEC Web of Conferences, 2018
A new method of accelerating of steel diffusion saturation during thermo-chemical treatment – microarc surface alloying is proposed. The steel product is placed in a metal container filled with coal powder, and heated by passing an electric current ...
Stepanov Makar S.   +2 more
doaj   +1 more source

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