Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : powder metallurgy


Study the Effect of Addition Different Amount Magnesium Hydroxide and Kaolin on Production of Refractory Magnesite Brick

Firas Farhan Sayyid; Shukry H. Aghdeab; Ali Mundher Mustafa

Engineering and Technology Journal, 2016, Volume 34, Issue 13, Pages 546-553

This aim of this research is study the effect of adding different percentages of magnesium hydroxide, kaolin and water on the production of refractory magnesite brick by use transformer process. Firstly transformative process carried out on the magnesium hydroxide and kaolin to obtain fine particle, after that mixture fine particle Burn in electric furnace at temperature (1000 oC ) for (2 hr ). The mixture Formed by using semi dry pressing with (10)% water under pressure (500 Kg/cm2) to obtain forming sample we carried out drying process ,and we can many test from inspection for obtain porosity, density, Water absorption, specific weight and more properties compressive strength . We fined finish refractory brick from light type where the resulted density is equal to ( 1.33 gcm3 ) and suits applications that need to lightness weight with durability.

Effect of Zinc Addition on the Density and Wear Rate of Al-12Si Compacts

Mahde Mter Hanoon

Engineering and Technology Journal, 2012, Volume 30, Issue 18, Pages 382-391

This research aimed to prepareAl-12Si alloys by powder metallurgy method because of its
commercial and technological importance. Aluminum and Silicon powders were used, then
mixed and blended together and classified into four parts, carbon powder was added to the
three parts (5,10 and 15% wt) and the last remain as it is. These powders were mixed to
ensure a good distribution of Zinc powder, and then they compacted in is ostatic cold pressure
at 10 ton, the compact samples were sintered in furnace under argon gas at 530°C for one
hour, These samples were then prepared (grinded, polished and etched) for them icrostructure
examination, density, porosity, microhardness, X-ray diffraction and wear resistance. The
results showed anincrease in the density and the hardness with addition ratio.

Effect of Silicon cavbide addition on properties of compacted Ni- caproduced by powder technology

Engineering and Technology Journal, 2011, Volume 29, Issue 11, Pages 497-507

This research aimed to product Cu-Al alloys by powder metallurgy method
because of it is commercial and technological important. Copper and aluminum powders were tacking then there powders mixed and blended together and classified to four parts, Silicon carbide powder added to three parts and the last remain as its then these powders mixed and then compacted in isostatic cold pressure at 7ton, then
this compact samples were sintered in furnace under argon gas at 830°C for one hour, latest these samples grinded and polished to microstructure, density, porosity, microhardness and X-ray diffraction tests.

Increased Porosity and Their Effect on The Density and Hardness Value of (Ni—Cu) Alloy

Engineering and Technology Journal, 2011, Volume 29, Issue 1, Pages 66-74

This research is aimed to produce Ni-Cu alloys by powder metallurgy method
because its commercial and technological importance. Nickel and Copper powders
were tacked then their powders mixed and blended together and classified to four
parts, Sodium Chloride powder added (as a space holder) to three parts and the
last remain as it is then these powders mixed and then compacted in hydrostatic
pressure at 7ton, then this compact samples were sintered in furnace under argon
gas at 950°C for one hour, latest these samples are grinded and polished to
examine the microstructure, density, porosity, microhardness, X-ray diffraction
and corrosion resistance.

The Mechanical Properties of Aluminum Matrix Composites

Engineering and Technology Journal, 2009, Volume 27, Issue 15, Pages 517-523

This work is production of aluminum matrix composite by powder metallurgy method .The samples have done when aluminum powder was used as a matrix in purity of (9.99%) and silicon carbide(α-SiC) as reinforcement material, the particle sizes were used which (125μm) at weight percentage (7.5% - 10% - 15%) from silicon carbide for each particle size. The purpose is to improve the hardness and wear properties of matrix .It was found that the hardness is increased with increment of the amount of added particles, due to the hardness of silicon carbid particles. From the wear test, it is found that the wear resistance increase with increasing the weight percentage of SiC particles, but the wear rate increase when the applied load increase for all the particles size and additional percentage. Also, it is found that when the sliding velocity increases, the wear rate also increases, but the best results were found in samples reinforced with (SiC) particles