scholarly journals Femtosecond Laser Additive Manufacturing of Multi-Material Layered Structures

2020 ◽  
Vol 10 (3) ◽  
pp. 979 ◽  
Author(s):  
Shuang Bai ◽  
Jian Liu
Keyword(s):  
Additive Manufacturing ◽  
Fuel Cell ◽  
Layer Structure ◽  
Single Step ◽  
Lanthanum Strontium Manganite ◽  
Laser Additive Manufacturing ◽  
Scan Speed ◽  
Femtosecond Fiber Lasers ◽  
Anode Support ◽  
Scan Pattern

Laser additive manufacturing (LAM) of a multi-material multi-layer structure was investigated using femtosecond fiber lasers. A thin layer of yttria-stabilized zirconia (YSZ) and a Ni–YSZ layer were additively manufactured to form the electrolyte and anode support of a solid oxide fuel cell (SOFC). A lanthanum strontium manganite (LSM) layer was then added to form a basic three layer cell. This single step process eliminates the need for binders and post treatment. Parameters including laser power, scan speed, scan pattern, and hatching space were systematically evaluated to obtain optimal density and porosity. This is the first report to build a complete and functional fuel cell by using the LAM approach.

Fabrication and Characterization of Anode-Supported Planar Solid Oxide Fuel Cell Manufactured by a Tape Casting Process

2008 ◽  
Vol 5 (2) ◽  
Author(s):  
Jung-Hoon Song ◽  
Nigel M. Sammes ◽  
Sun-Il Park ◽  
Seongjae Boo ◽  
Ho-Sung Kim ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Tape Casting ◽  
Casting Process ◽  
Open Circuit ◽  
Single Step ◽  
Unit Cell ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Lanthanum Strontium Manganite

A planar anode-supported electrolyte was fabricated using a tape casting method that involved a single step cofiring process. A standard NiO∕8YSZ cermet anode, 8mol% YSZ electrolyte, and a lanthanum strontium manganite cathode were used for the solid oxide fuel cell unit cell. A pressurized cofiring technique allows the creation of a thin layer of dense electrolyte about 10μm without warpage. The open circuit voltage of the unit cell indicated negligible fuel leakage through the electrolyte film due to the dense and crack-free electrolyte layer. An electrochemical test of the unit cell showed a maximum power density up to 0.173W∕cm2 at 900°C. Approximated electrochemical properties, e.g., activation energy, Ohmic resistance, and exchange current density, indicated that the cell performance was significantly influenced by the electrode properties of the unit cell.

scholarly journals Studying the layer structure formation in laser additive manufacturing with AlMg6 alloy wire

2021 ◽  
Vol 1891 (1) ◽  
pp. 012034
Author(s):  
A.D. Eremeev ◽  
I.A. Tsibulskiy ◽  
A.D. Akhmetov ◽  
D.V. Mukin ◽  
A.O. Davletshin
Keyword(s):  
Additive Manufacturing ◽  
Structure Formation ◽  
Layer Structure ◽  
Laser Additive Manufacturing ◽  
Alloy Wire

scholarly journals 3D Printing with Mixed Powders of Boron Carbide and Al Alloy

2020 ◽  
Vol 10 (9) ◽  
pp. 3055
Author(s):  
Shuang Bai ◽  
Hyeong Jae Lee ◽  
Jian Liu
Keyword(s):  
Aluminum Alloy ◽  
Boron Carbide ◽  
Three Dimensional ◽  
Melting Process ◽  
Wall Structure ◽  
Al Alloy ◽  
Thin Wall ◽  
Laser Additive Manufacturing ◽  
Scan Speed ◽  
Scan Pattern

Laser additive manufacturing with mixed powders of boron carbide and aluminum alloy is investigated. Parameters such as laser power, scan speed, scan pattern, and hatching space are systematically evaluated and optimized to obtain the desired density and porosity. These results show that the AM part contains 20 wt% boron carbide and 80 wt% aluminum alloy, which are well mixed and synthesized during the melting process. Its mechanical properties are close to those of aluminum. A thin-wall structure based two dimensional and three dimensional radial collimators were fabricated with well-controlled geometry for neutron scattering measurement.

Assessing the Co-Deformability of a Nickel-Based Superalloy-304L Stainless Steel Preform Manufactured through Laser Additive Manufacturing

2021 ◽  
Author(s):  
Dipti Samantaray ◽  
Bommakanti Aashranth ◽  
Neelakandapillai Lekshmanan Parthasarathi ◽  
Arun Kumar Rai ◽  
Marimuthu Arvinth Davinci ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Additive Manufacturing ◽  
304L Stainless Steel ◽  
Laser Additive Manufacturing ◽  
Nickel Based Superalloy
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