A5087496942- Additive Manufacturing and 3D Printing Technologies
- Advanced ceramic materials synthesis
- Innovations in Concrete and Construction Materials
- Advanced materials and composites
- Additive Manufacturing Materials and Processes
- Bone Tissue Engineering Materials
- Granular flow and fluidized beds
- Magnetic Properties of Alloys
- Aluminum Alloys Composites Properties
- Materials Engineering and Processing
- Injection Molding Process and Properties
- Powder Metallurgy Techniques and Materials
- High Entropy Alloys Studies
- Solid State Laser Technologies
- Luminescence Properties of Advanced Materials
- Magnetic properties of thin films
- Magnetic Properties and Applications
- Magnesium Oxide Properties and Applications
- Bauxite Residue and Utilization
- Adhesion, Friction, and Surface Interactions
- Tunneling and Rock Mechanics
- Metallic Glasses and Amorphous Alloys
- Nuclear materials and radiation effects
- Metal and Thin Film Mechanics
- Manufacturing Process and Optimization
DEVCOM Army Research Laboratory
2018-2025
United States Army Combat Capabilities Development Command
2020-2024
Oak Ridge Associated Universities
2016
Rutgers, The State University of New Jersey
2011-2015
University of Leeds
2015
Chinese University of Hong Kong
1997-2005
Abstract 3D printing (3DP) technologies have transformed the processing of advanced ceramics for small‐scale and custom designs during past three decades. Simple complex parts are designed manufactured using 3DP structural, piezoelectric, biomedical applications. Manufacturing simple or geometries one‐of‐a‐kind components without part‐specific tooling saves significant time creates new applications ceramic materials. Although development innovations in far behind compared with metals...
Additive manufacturing (AM) has created a new era of digital manufacturing, where engineering practices, computer-aided design platforms, and part sourcing pipelines are dramatically changing. AM techniques capable producing plastic, metal, ceramic components for both prototyping end-use purposes. In this review, the fabrication dense, structural advanced using seven families additive is discussed through historical perspective. Initial studies on materials were reported just few years after...
Cemented tungsten carbide (WC) is commonly used for wear-resistant applications, such as cutting tools and abrasives due to its extremely high hardness. This hardness leads post-process machining of WC be time- cost-intensive. study examined the feasibility additive manufacturing cemented near-net-shape in an effort reduce machining. The binder phase manufactured samples iron-based alloy, which has a lower melting temperature than cobalt, conventional WC. In this proof-of-concept study,...
As the size of individual particles is reduced below several microns, interparticle cohesive forces begin to play a major role in bulk powder behavior.Fine powders generally exhibit poor flowability as well an affinity agglomerate and form clusters due this cohesion.This clustering behavior dry, binderless known auto-granulation can often cause difficulties processing handling powders.In study, titania vibrated under controlled conditions induce promote growth.The amplitude frequency...
Mid-infrared, solid-state laser materials face three main challenges: (1) need to dissipate heat generated in lasing; (2) luminescence quenching by multiphonon relaxation; and (3) trade-off high thermal conductivity small maximum phonon energy. We are tackling these challenges synthesizing a ceramic nanocomposite which multiple phases will be incorporated into the same structure. The undoped majority species, MgO, carrier of conductivity, minority Er:Y2O3, have low There is also an inherent...
Hot steam corrosion tests were performed on heat-treated Al coated NdFeB magnets. The results suggest that the process can be divided into different stages. Initially, Nd which diffuses across coating from Nd-rich grain boundaries of magnet during annealing, reacts with moisture forming either oxide or hydroxide at surface. Upon further corrosion, brittle Al-Fe-Nd-O-B compounds are formed, and they appear as lumps oxides hydroxides Fe layer. And finally, whole is consumed due to proceeds...
Abstract A UV‐curable resin containing alumina (Al 2 O 3 ) powder and platelets was developed characterized using a proof‐of concept tape‐casting system trialed on commercially available 3D‐printing platform (Admatec Admaflex 130). The influence of solids loading platelet fraction viscosity depth cure investigated. Resins up to 40 vol% at fractions 50% were found have sufficiently low for tape casting depths ranging from 0.29 0.39 mm. Alumina observed lower ink but also reduce shear thinning...
NdFeB magnets were coated with a dual layer of either Ti/Al or Ni/Al by thermal evaporation. When the samples annealed at 400/spl deg/C, intermetallic reactions occurred within these coatings, between Ti and Al, Ni Al. 500/spl reaction extended to matrix magnet forming Al/sub 36/Ti/sub 43/Fe/sub 17/Nd/sub 4/ in sample Ti/Al, but Ni/sub 2/AlFe/sub 0.1/ sample. The presence intermetallics confirmed leaching NaOH. We had observed that smooth surface, while was porous microcracks as result...
In the pursuit of efficient mid-Infrared laser host materials, we developed a dual-phase nanocomposite composed majority species (MgO) which provides high thermal conductivity and rare earth doped minority (Er:Y<sub>2</sub>O<sub>3</sub>) featuring low maximum-phonon energy. This material was prepared using co-precipitation method where both components are synthesized together for intimate mixing on smallest scale. Preparation parameters were tuned to achieve small crystallite size in order...
Abstract Ultra–high‐temperature ceramics (UHTCs) are valued for their extremely high melting temperatures and resistance to active oxidation. However, low fracture strengths the difficulties in shaping them into complex geometries hamper widespread application. This study aims fabricate zirconium diboride–silicon carbide (ZrB 2 ‐SiC) composites reinforced with aligned SiC fibers by formulating suspensions containing a preceramic polymer, ZrB , fibers. assessed influence of fiber alignment on...
Alumina (Al2O3) is one of the most widely used ceramic materials for innumerable applications, due to its unique combination attractive physical and mechanical properties. These intrinsic properties are dictated by numerous phases that Al2O3 forms related phase transformations. Transition metal (TM) cation dopants (iron (Fe), cobalt (Co), nickel (Ni) manganese (Mn)), even in sparse amounts, have been shown significantly affect transformation microstructural evolution Al2O3. Small...