Electrochemical properties of micron-sized, spherical, meso- and macro-porous Co3O4 and CoO–carbon composite powders prepared by a two-step spray drying process

Nanoscale ◽  
2014 ◽  
Vol 6 (9) ◽  
pp. 4789 ◽  
Author(s):  
Jung Hyun Kim ◽  
Yun Chan Kang
Keyword(s):  
Electrochemical Properties ◽  
Spray Drying ◽  
Carbon Composite ◽  
Drying Process ◽  
Composite Powders

Synthesis of Cu-Coated Ni-Based Amorphous Composite Powders by Gas Atomization and Spray Drying Process

2007 ◽  
Vol 534-536 ◽  
pp. 133-136 ◽  
Author(s):  
Byoung Kee Kim ◽  
Yong Jin Kim ◽  
Jin Chun Kim
Keyword(s):  
Metallic Glass ◽  
Spray Drying ◽  
Water Soluble ◽  
Process Conditions ◽  
Gas Atomization ◽  
Initial Powder ◽  
Drying Process ◽  
Composite Powders ◽  
Atomization Process ◽  
Micron Size

Ni59Zr20Ti16Si2Sn3 bulk metallic glass (BMG) powders were produced by a gas atomization process, and ductile Cu powders were coated on the Ni-based BMG powders using a spray drying process in order to increase the ductility. Characteristics of the as-prepared powders with the atomization and spray drying process conditions were investigated. The atomization was conducted at 1450oC under the vacuum of 10-2 torr and the powders were mixed with water-soluble Cu nitrate. The mixture was sprayed at the temperature of 130oC to prepared initial powder. After reduction treatment, sub-micron size Cu powders were successfully coated on the surface of the atomized Ni BMG powders.

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