scholarly journals Oxidation and Kinetic Analysis of Pure Aluminum Powder under Nonisothermal Condition

2012 ◽  
Vol 01 (08) ◽  
Author(s):  
Hasani S
Keyword(s):  
Kinetic Analysis ◽  
Aluminum Powder ◽  
Pure Aluminum ◽  
Nonisothermal Condition

Environmental Sustainability through Recycling Incineration Bottom Ash for the Production of Autoclaved Aerated Concrete

2015 ◽  
Vol 650 ◽  
pp. 51-70 ◽  
Author(s):  
En Hua Yang ◽  
Yi Quan Liu ◽  
Zhi Tao Chen
Keyword(s):  
Aluminum Powder ◽  
Environmental Sustainability ◽  
Pure Aluminum ◽  
Bottom Ash ◽  
Waste Incineration ◽  
Gas Generation ◽  
Autoclaved Aerated Concrete ◽  
Silica Source ◽  
Aerated Concrete ◽  
Aeration Capacity

Municipal solid waste incineration bottom ash (IBA) has great potential to be utilized for civil engineering applications. This paper is to investigate the characteristic of gas generation from IBA and to study the potential of IBA as aerating agent to replace costly aluminum powder and as silica source to partially replace silica flour/fly ash in the production of autoclaved aerated concrete (AAC). Results show the aeration capacity of IBA used in this study is about 1% that of pure aluminum powder by mass. Finer particles, higher alkali molarity, and higher reaction temperature encourage the reaction and more gas is generated per gram of IBA. Type of alkaline solution does not seem to be an important factor for gas generation from IBA. Several exemplary lightweight mortars and AACs were produced by incorporating IBA as aerating agent. It is highly plausible IBA can be used as aerating agent to replace pure aluminum powder in the production of normal aerated concrete. IBA-AACs with density ranging from 600 to 800 kg/m3 were successfully synthesized by using IBA as aerating agent. For a given density, the compressive strength of IBA-AAC is higher than that of AAC due to the formation of more uniform pore structure with smaller pore size in IBA-AAC.

Deposition of Sn-Al Onto Aluminum Powder in Its Self-Convective Motion by DC Sputtering

2005 ◽  
Vol 498-499 ◽  
pp. 23-27
Author(s):  
Tsutomu Sonoda ◽  
Akira Watazu ◽  
Kazumi Kato ◽  
Tadashi Asahina
Keyword(s):  
Low Temperature ◽  
Aluminum Powder ◽  
Pure Aluminum ◽  
Convective Motion ◽  
The Self ◽  
Al Alloy ◽  
Aluminum Particles ◽  
Dc Sputtering ◽  
Al Composite ◽  
Highly Uniform

The deposition of Sn-5wt.%Al alloy onto pure aluminum powder in its self-convective motion by magnetron DC sputtering was examined in order to prepare Al-Sn composite particles, aiming not only at the development of highly uniform sintered binary compact materials but also at the improvement of the bonding between the aluminum particles after sintering at low temperature such as 250°C. The self-convection phenomenon of the aluminum powder in the vacuum chamber occurred when a perpendicular vibration was applied to the powder. The sputter-deposition of the Sn-Al alloy was carried out during the self-convection of the aluminum powder. Under SEM and according to EPMA analysis, as well as according to thermal analysis with DSC, it was confirmed that the obtained particles were coated with the Sn-Al deposits. Therefore it was found that Sn-Al composite powder could be produced by this processing, and thereby not only the development of highly uniform sintered binary compact materials but also the improvement of the bonding between the aluminum particles after sintering at low temperature were expected.

A Tension Analysis During Oxidation of Pure Aluminum Powder Particles: Non-isothermal Condition

2014 ◽  
Vol 82 (3-4) ◽  
pp. 209-224 ◽  
Author(s):  
S. Hasani ◽  
A. P. Soleymani ◽  
M. Panjepour ◽  
A. Ghaei
Keyword(s):  
Aluminum Powder ◽  
Pure Aluminum ◽  
Isothermal Condition ◽  
Powder Particles ◽  
Tension Analysis

scholarly journals The Effect of Sintering Holding Time on Aluminum–Marble Composite Hardness, Density and Porosity

2020 ◽  
Vol 55 (2) ◽  
Author(s):  
Faisal Habib ◽  
Rudy Soenoko ◽  
Sudjito Soeparman ◽  
Yudy Surya Irawan
Keyword(s):  
Aluminum Powder ◽  
Compaction Pressure ◽  
Pure Aluminum ◽  
Hardness Test ◽  
Weight Fraction ◽  
Cold Isostatic Pressing ◽  
Holding Time ◽  
Mixed Powder ◽  
Pressing Method ◽  
Marble Powder

Utilization of marble waste as a metal matrix composite reinforcement during the powder metallurgical process, with pure aluminum powder as the main ingredient, is intended to obtain a holding time for the sintering process at a temperature of 650oC in order to produce aluminum–marble composites with optimal hardness, density, and porosity. Marble powder was mashed and sieved to 200 mesh and then mixed with aluminum powder with a weight fraction of 20% marble powder and 80% aluminum powder. The mixed powder, after being fully stirred and then compacted with 300 MPa compaction pressure using a cold isostatic pressing method, was then sintered for 120, 180, or 240 minutes. Surface characteristics of each specimen were examined using Scanning Electron Microscopy followed by a hardness test. It was found that the specimen sintered for 240 minutes had the highest hardness. Then, using ASTM-C20 standard procedures, the porosity and density test results demonstrated that the specimen with 240 minutes sintering time also had the highest density and lowest porosity. The results of this study indicate that a longer heating time can increase the hardness and density of the specimen material.

An experimental evaluation on the influence of pure aluminum powder on surface texture of Japanese oak

2004 ◽  
Vol 2004.12 (0) ◽  
pp. 265-266
Author(s):  
Kazuyuki IEDA ◽  
Makiko YONEHARA ◽  
KOICHIRO Kihara ◽  
Yoshihito KAGAWA ◽  
Kiyomi MORI ◽  
...  
Keyword(s):  
Aluminum Powder ◽  
Surface Texture ◽  
Experimental Evaluation ◽  
Pure Aluminum
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