Browsing by Subject "encapsulation"

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In-situ Electrical Resistance Measurements for Soldering Studies in Hybrid AM
(University of Texas at Austin, 2023) Pustinger, Alexander P.; Corral, Joselin; Villegas, Arianna; Espalin, David
This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof: The views and opinions of-authors expressed herein do not necessarily state or reflect those of the-United States Government or any agency thereof.
Metal-Ceramic Composite Lattice Structures Using 3D Printed Sand Molds and Cores
(University of Texas at Austin, 2016) Druschitz, A.P.; Cowden, S.; Dudley, A.; Walsh, S.; Weir, A.; Williams, C.B.; Wood, B.
Binder Jetting of sand molds for metal casting provides a scalable and efficient means of fabricating large metal parts with complex geometric features made possible only by Additive Manufacturing. For example, in earlier work, the authors demonstrated the use of Binder Jetting to fabricate complex mold structures for casting large-scale, lightweight metallic lattice structures and sandwich panels that could not be made through either traditional sand casting or through other direct metal AM techniques. In this paper, the authors demonstrate the fabrication of metal-ceramic composite lattice structures via embedding ceramic tiles into the printed mold package. The addition of ceramic tiles can add resistance to penetrators and/or radiation shielding to the lightweight lattice structures, which can be tailored for energy absorbing performance. 3D printed mold and core designs for metal and metal-ceramic composite lattice castings are described along with 3D printed mold designs for encapsulating individual metal or ceramic tiles.
Multinuclear Cd-2, Cd-3 and 1-D Framework Structures of Cd(II) Schiff Base Complexes
(2009-04) Agapiou, Kyriacos; Mejia, Michelle L.; Yang, Xiaoping; Holliday, Bradley J.; Agapiou, Kyriacos; Mejia, Michelle L.; Yang, Xiaoping; Holliday, Bradley J.
Reactions of the "salen" type Schiff bases H2L1 and H2L2 with Cd(OAc)(2)center dot 2H(2)O gave complexes with Cd-2 and Cd-3 cores and an extended 1-D framework architecture [H2L1 = N,N'-(1,2-phenylenyl)bis(5-bromo-2-hydroxy-3-methoxybenzaldimine; H2L2 = N,N'-(propyl)-bis(5-bromo-2-hydroxy-3-methoxybenzaldimine)].
Pentanuclear Tetra-Decker Luminescent Lanthanide Schiff Base Complexes
(2008-04) Yang, Xiaoping; Jones, Richard A.; Wong, Wai-Kwok; Yang, Xiaoping; Jones, Richard A.
Luminescent pentanuclear tetra-decker Ln(III) complexes [Eu5L4(OH)(2)(NO3)(4)(H2O)]center dot NO3 center dot 3H(2)O 1, [Nd5L4(OH)(2)-(NO3)(5)MeOH]center dot 3MeOH center dot 2H(2)O2 and [Eu5L4(CF3SO3)(4)(MeO)(2)-(H2O)(4)]center dot CF3SO3 center dot H2O 3 are formed from Ln(NO)(3)center dot 6H(2)O (Ln = Eu (1), Nd (2)) and Eu(CF3SO3)(3), respectively (H2L = N, N'-bis(5-bromo-3-methoxysalicylidene)phenylene-1,2-diamine).
Syntheses, Structures, and Photoluminescence of 1-D Lanthanide Coordination Polymers
(2009-10) Yang, Xiaoping; Jones, Richard A.; Rivers, Joseph H.; Wong, Wai-Kwok; Yang, Xiaoping; Jones, Richard A.; Rivers, Joseph H.
Five new lanthanide 1-D coordination polymers are reported which are formed from flexible salen type Schiff-base ligands H(2)L and H(2)L' (H(2)L = N, N(1)-ethylene bis(salicylideneimine); H(2)L' = N,N(1)-bis(3-methoxysalicylidene) ethylene-1,2-diamine). The polymeric structures are formed by bridging neutral H(2)L units in the case of {[Ln(2)L(2)(CF(3)SO(3))(H(2)L)(4)(MeOH)]center dot CF(3)SO(3)}(n) (Ln = Eu (1), Nd (2) and Er (3)), and by acetate (OAc(-)) groups in [Yb(2)(L)(2)(OAc)(2)(MeOH)(2)](n) (4) and {[Tb(3)(L')(2)(OAc)(5)]center dot Et(2)O center dot(MeOH)(0.5)}(n) (5). The structures of 1-5 were determined by single crystal X-ray crystallographic studies and the luminescence properties of 1 and 5 in MeOH solution were determined.