Fabrication and Characterization of Tungsten Heavy Alloys with High W Content by Powder Metallurgy

2022 ◽  
Author(s):  
Zhi-Bo Li ◽  
He Zhang ◽  
Guo-Hua Zhang ◽  
Kuo-Chih Chou
Keyword(s):  
Powder Metallurgy ◽  
Heavy Alloys ◽  
Tungsten Heavy Alloys ◽  
Fabrication And Characterization

scholarly journals Fabrication and Characterization of Tungsten Heavy Alloys Using Chemical Reduction and Mechanical Alloying Methods

2013 ◽  
Vol 03 (01) ◽  
pp. 15-27 ◽  
Author(s):  
Zeinab Abdel Hamid ◽  
Sayed Farag Moustafa ◽  
Walid Mohamed Daoush ◽  
Fatema Abdel Mouez ◽  
Mona Hassan
Keyword(s):  
Mechanical Alloying ◽  
Chemical Reduction ◽  
Heavy Alloys ◽  
Tungsten Heavy Alloys ◽  
Fabrication And Characterization

Fabrication and characterization of Ti6Al4V/TiB2–TiC composites by powder metallurgy method

Rare Metals ◽  
2016 ◽  
Vol 36 (10) ◽  
pp. 806-811 ◽  
Author(s):  
M. Anandajothi ◽  
S. Ramanathan ◽  
V. Ananthi ◽  
P. Narayanasamy
Keyword(s):  
Powder Metallurgy ◽  
Powder Metallurgy Method ◽  
Fabrication And Characterization

Fabrication and Characterization of Different Ca Content in Mg-Ca Composite Using Powder Metallurgy Technique

2015 ◽  
Vol 819 ◽  
pp. 309-313 ◽  
Author(s):  
M.S. Syaza Nabilla ◽  
C.D. Zuraidawani ◽  
M.N. Derman
Keyword(s):  
Powder Metallurgy ◽  
Morphological Analysis ◽  
Calcium Content ◽  
Optical Microscope ◽  
Powder Metallurgy Technique ◽  
Weight Percentage ◽  
Fabrication And Characterization ◽  
Strength Improvement ◽  
Xrd Method

Magnesium (Mg) has a great potential to be used in various field of work since it is lightweight and has low density properties. However, its application is limited due to its poor properties for Mg has a relatively low strength. Improvement is made by mixing Mg with calcium (Ca) as composite element for it is lightweight and non-toxic. In this research, Mg is prepared with different weight percentage (0, 0.5, 1, 1.5, 2 wt. %) of Ca with pure Mg as reference prepared by powder metallurgy (PM) method to study the mechanical properties. Morphological analysis carried out by optical microscope shows increase grain refinement with the increase of calcium content in Mg-Ca composites. The phase transition upon addition of Ca is determined using XRD method detects formation of Mg2Ca. Range from 1.78 g/cm3to 1.83 g/cm3, the density of each sample composite increase. While porosity profiles show inverse characteristics upon addition of Ca. Microhardness strengths also intensifies up to 193.20 MPa as more Ca content added in.

scholarly journals Investigation of tungsten heavy alloys using powder metallurgy technique

2021 ◽  
Vol 13 (2) ◽  
pp. 130-136
Author(s):  
Arafa S. Sobha ◽  
◽  
Amr Adela ◽  
Abdelhay Mohameda ◽  
Ali Abd El-Atya ◽  
...  
Keyword(s):  
Powder Metallurgy ◽  
Process Control ◽  
Sintering Temperature ◽  
Control Agent ◽  
Preparation Condition ◽  
Electrical Contacts ◽  
Nano Particle ◽  
Process Control Agent ◽  
Heavy Alloys ◽  
Tungsten Heavy Alloys

Recently, developing new alloys of Tungsten heavy (WHA) is the most important issue that researchers considered due to their wide applications of radiation protectors, vibration absorber, kinetic energy penetrators and heavy-duty electrical contacts. The present work shows 9 different Tungsten alloys with a variety of weight percent’s from "Graphene" as a Nano- particle additive. The proposed alloys produced by minimizing manufacturing parameters by applying the Taguchi technique. In addition, this work used to relate the Powder-Metallurgy (PM) parameters such as Sintering Temperature (ST) level, the weight % of the added Nano-particle of Graphene (Gw) and the type of Process Control Agent (PCA) with the mechanical characteristics such as Young’s modulus, modulus of Bulk, modulus of Shear, Poisson's number, Vickers hardness, Grain size , Relative Density. The results showed that specimen number 8 is given higher values of modulus of elasticity, reached 326.2 GPa, bulk value of 255.64 GPa, and shear value of 126.7 GPa with PM preparation condition at 15000C sintering temperature, stearic acid as a process control agent (PCA) and 0.0 %Wt. of Graphene.

Fabrication and characterization of americium, neptunium and curium bearing MOX fuels obtained by powder metallurgy process

2012 ◽  
Vol 420 (1-3) ◽  
pp. 213-217 ◽  
Author(s):  
Florent Lebreton ◽  
Damien Prieur ◽  
Aurélien Jankowiak ◽  
Magaly Tribet ◽  
Caroline Leorier ◽  
...  
Keyword(s):  
Powder Metallurgy ◽  
Powder Metallurgy Process ◽  
Fabrication And Characterization ◽  
Metallurgy Process

Preparation and Characterization of Tungsten Heavy Alloy Feedstock for Metal Injection Molding

2007 ◽  
Vol 26-28 ◽  
pp. 363-366 ◽  
Author(s):  
Syed Humail Islam ◽  
Xuan Hui Qu ◽  
M. Tufail
Keyword(s):  
Molecular Weight ◽  
Stearic Acid ◽  
High Density Polyethylene ◽  
Flow Behavior ◽  
Metal Injection Molding ◽  
Tungsten Heavy Alloy ◽  
Shear Rates ◽  
Heavy Alloys ◽  
Tungsten Heavy Alloys

In this study, the effect of various binders’ compositions on the feedstock of pre-alloyed tungsten heavy alloys (WHAs) powders has been investigated. Four kinds of wax-based binders were prepared from paraffin wax (PW), high-density polyethylene (HDPE), polypropylene (PP) and stearic acid (SA), and the characteristic of each feedstock was investigated at various temperatures and shear rates. It was found that all the feedstocks exhibited pseudoplastic flow behavior. Feedstock having multi-polymer components showed better rheological properties than those having mono-polymer because of good wettability between powder and binder, and less sensitivity to temperature and shear rates. This could be due to the molecular weight and length of molecular chain of PP and HDPE.

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