Effect of structural evolution of aluminum powder during ball milling on hydrogen generation in aluminum–water reaction

2013 ◽  
Vol 38 (2) ◽  
pp. 795-806 ◽  
Author(s):  
S.S. Razavi-Tousi ◽  
J.A. Szpunar
Keyword(s):  
Ball Milling ◽  
Aluminum Powder ◽  
Hydrogen Generation ◽  
Structural Evolution

Experimental Investigation and Micro-Structural Evolution Analysis of CNT & Fly Ash Reinforced Aluminium Matrix Composites

2015 ◽  
Vol 830-831 ◽  
pp. 429-432 ◽  
Author(s):  
Udaya ◽  
Peter Fernandes
Keyword(s):  
Mechanical Properties ◽  
Experimental Investigation ◽  
Fly Ash ◽  
Ball Milling ◽  
Milling Time ◽  
Structural Evolution ◽  
Matrix Composites ◽  
Evolution Analysis ◽  
Ball Milling Time ◽  
Al Matrix

The paper illustrates Carbon nanotubes reinforced pure Al (CNT/Al) composites and fly ash reinforced pure Al (FA/Al) composites produced by ball-milling and sintering. Microstructures of the fabricated composite were examined and the mechanical properties of the composites were tested and analysed. It was indicated that the CNTs and fly ash were uniformly dispersed into the Al matrix as ball-milling time increased with increase in hardness.

Structural evolution of a graphite–diamond mixture during ball milling

2010 ◽  
Vol 405 (3) ◽  
pp. 1004-1010 ◽  
Author(s):  
Z.Q. Li ◽  
Y. Zhou
Keyword(s):  
Ball Milling ◽  
Structural Evolution

Investigation of Influence of Input Energy during Ball Milling of Aluminum Powder

2021 ◽  
Vol 313 ◽  
pp. 143-151
Author(s):  
S.V. Klinkov ◽  
V.F. Kosarev ◽  
A.E. Chesnokov ◽  
A.V. Smirnov ◽  
T.M. Vidyuk
Keyword(s):  
Ball Milling ◽  
Surface Area ◽  
Aluminum Powder ◽  
Temperature Rise ◽  
Total Surface Area ◽  
Main Process ◽  
Input Energy ◽  
Local Melting ◽  
Ball Surface ◽  
Powder Particles

Influence of the rate at which energy is applied to aluminum powder during its ball milling is investigated. Rolling granulation is a main process due to which treated particles achieve their unique morphology and microstructure. Drastic temperature rise at rapid ball milling leads to increase in plasticity and local melting of treated powder particles that result in their adherence to the surfaces of milling balls and mill cylinder walls. Mass of aluminum powder adhered to the ball surface is proportional to the total surface area of all balls loaded in mill.

Influence of Preliminary Heat Treatment and Ball Milling of Aluminum Powder on Cold Spray Process

2021 ◽  
Vol 313 ◽  
pp. 127-135
Author(s):  
S.V. Klinkov ◽  
V.F. Kosarev ◽  
A.E. Chesnokov ◽  
A.V. Smirnov ◽  
V.S. Shikalov
Keyword(s):  
Heat Treatment ◽  
Ball Milling ◽  
Aluminum Powder ◽  
Cold Spraying ◽  
Preliminary Heat Treatment ◽  
Aluminum Powders ◽  
Aluminum Coatings ◽  
Spray Process ◽  
Spraying Process ◽  
Milled Powders

This paper presents the results of a study of the effect of preliminary heat treatment and ball milling of aluminum powder on the cold spraying process and the properties of the obtained coatings (porosity and microhardness). The ball milling of aluminum powder leads to an increase in specific surface area, a decrease in apparent density and a decrease in the value of the crystallite size, which indicates a decrease in grain size. It is shown that coatings deposited from ball milled powders have slightly higher coatings hardness averagely. The profilometry of aluminum coatings obtained under the same conditions from the initial and processed powders did not reveal significant changes in the form of coatings and their typical dimensions (width, thickness), which indicates the absence of significant changes in the deposition coefficient of the initial and processed aluminum powders. Ball milled powders on average correspond to slightly higher hardnesses of coatings.

Evaluation of a cobalt–molybdenum–boron catalyst for hydrogen generation of alkaline sodium borohydride solution–aluminum powder system

2013 ◽  
Vol 224 ◽  
pp. 304-311 ◽  
Author(s):  
Da-Wei Zhuang ◽  
Qiang Kang ◽  
Sean S. Muir ◽  
Xiangdong Yao ◽  
Hong-Bin Dai ◽  
...  
Keyword(s):  
Aluminum Powder ◽  
Sodium Borohydride ◽  
Hydrogen Generation ◽  
Powder System ◽  
Sodium Borohydride Solution

Improvement Parameters of Hydrogen Generation from Water under Stainless-Steel-Mediated Ball Milling Conditions

2020 ◽  
Vol 93 (11) ◽  
pp. 1366-1371
Author(s):  
Miki Itoh ◽  
Yoshinari Sawama ◽  
Miki Niikawa ◽  
Kazuho Ban ◽  
Takahiro Kawajiri ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Ball Milling ◽  
Hydrogen Generation

Preparation and Characterization of Coated Alumina/Aluminum Cermet Composite Powder via Ball Milling Method

2020 ◽  
Vol 861 ◽  
pp. 250-255
Author(s):  
Fang Wang ◽  
Ai Xia Chen ◽  
Chao Yang ◽  
Min Han Xu ◽  
Da Ming Du ◽  
...  
Keyword(s):  
Ball Milling ◽  
Aluminum Powder ◽  
Composite Powder ◽  
Milling Time ◽  
Ceramic Materials ◽  
Aluminum Composite ◽  
Alumina Particles ◽  
Milling Method ◽  
Milling Condition ◽  
Ball Milling Time

Cermet is an important new engineering material that not only maintains the excellent properties of ceramic materials, but also has the advantages of metal materials. In this paper, the encapsulated alumina-aluminum composite powder was prepared by ball milling and characterized, which laid a foundation for the development of high properties cermet materials. Through the analysis of experimental results, the conclusions are shown when the ball milling time is greater than 3 h, the alumina particles are more evenly distributed around the aluminum powder. the ball milling for 6 h may have reached a limit of the mixing uniformity of the two powder, so the ball milling is determined 6 h as the better ball milling time. Under the ball milling condition of 50 r/min, the distribution of alumina particles around the aluminum powder is more uniform around the aluminum powder than the ball mill under 75 r/min, the ball milling speed is preferably 50 r/min. As the content of aluminum powder increases, the distribution of alumina in aluminum powder is large and uniform, and there is a small amount of pinning. It provides a package-like composite for the preparation of cermet with a wrapped structure and the thermal conduction mechanism of the controlled cermet.

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