نتایج جستجو برای: molybdenum metallurgy

تعداد نتایج: 16955  

Journal: :Ceramics International 2021

Graphite-molybdenum-titanium composites might attract significant interest as heat sinks for different sector applications due to their excellent thermal, electrical and mechanical properties. This type of was already studied but following the powder metallurgy spark plasma sintering (SPS) route. The aim present investigation is study a new route fabrication these improve properties: colloidal ...

Journal: :Journal of physics 2022

Abstract In this work, the crystal structure and (RMSD) root-mean-square displacement of atoms in new cubic refractory interstitial alloys Ti0.74Mo0.26C Ti0.70Mo0.30C were determined by neutron diffraction. These are obtained powder metallurgy sintering fine powders titanium carbides TiC molybdenum MoC. The values RMSD these alloys, methods least squares full-profile analysis from diffraction d...

2012
Goutam Dutta Dipankar Bose

The residual porosity is an unavoidable phenomenon of the components produced by powder metallurgy process which in turn largely affects the strength property of the same. Now a day it is possible to control porosity of powder metallurgy components and retain them to desired amount when required. The porosity of a powder metallurgy component is greatly depends on the sintering temperature. In t...

2012
Sachin Kumar Abhishek Jain Pramod Singh

In most of the engineering applications, such as mining, metallurgy, agriculture; equipments are failed by the abrasive wear. The data as obtained form ministry of Research and Technology indicates that the percentage cost of abrasive wear in federal republic of German in metallurgy industry is 40%, mining industry 30%, agriculture 20% and production engineering 10%, and so the material selecti...

2005
J. J. Kruzic J. H. Schneibel R. O. Ritchie

An investigation of how microstructural features affect the fracture and fatigue properties of a promising class of high temperature Mo-Si-B based alloys is presented. Fracture toughness and fatigue-crack growth properties are measured at 25o and 1300oC for five Mo-Mo3Si-Mo5SiB2 containing alloys produced by powder metallurgy with α-Mo matrices. Results are compared with previous studies on int...

2005
Mustafa AY Ahmet HASÇALIK

In this study, the effect of chromium carbide (Cr7C3) on abrasive wear behavior of Fe-C-Mo-FeCr composite was investigated. Composite, which was produced by a powder metallurgy route was containing 3 wt.% Mo, 1.5 wt. % C and 4,8,12 wt. % FeCr with the different particle sizes. In the experiments, wear resistance of samples were determined using different loads by a pin on disc wear tester. Micr...

Journal: :iranian journal of radiation research 0
s.a. memon nuclear institute of medicine and radiotherapy (nimra) jamshoro, pakistan n.a. laghari nuclear institute of medicine and radiotherapy (nimra) jamshoro, pakistan s.t. qureshi university of sindh, jamshoro, pakistan f. mehdi nuclear institute of medicine and radiotherapy (nimra) jamshoro, pakistan

background: technetium-99m radioisotope is the backbone of any nuclear medicine institute. this radioisotope is acquired by the elution of molybdenum-99/technetium-99m generator which emits 141 kev gamma ray and having 6.04 hour half-life. occasionally the contents of molybdenum-99 may mix up with elute, which may affect image quality and patients may receive higher doses than recommended. this...

Journal: :Applied sciences 2022

Titanium has many limitations in coverage and frequency of application due to its expensive alloying elements complex manufacturing process. The biocompatible Ti-Mo-Fe ternary beta titanium alloys were designed by replacing high-cost beta-stabilizer (V, Nb, Zr, etc.) with low-cost Mo Fe elements. In addition, it was attempted obtain a low-cost, high-strength beta-titanium alloy 800 MPa or more ...

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