14th Symposium on Green and Sustainable Technologies for Materials Manufacturing and Processing: Sustainable Processing of Ceramics and Composites I/Novel Processing of Coatings and Metals
Sponsored by: ACerS Engineering Ceramics Division
Program Organizers: Surojit Gupta, University of North Dakota; Mritunjay Singh, Ohio Aerospace Institute; Tatsuki Ohji, National Institute of Advanced Industrial Science and Technology; Hisayuki Suematsu, Nagaoka University of Technololgy; Enrico Bernardo, University of Padova; Rajiv Asthana, University of Wisconsin; Yiquan Wu, Alfred University; Zhengyi Fu, Wuhan University of Technology; Allen Apblett, Oklahoma State University

Tuesday 8:00 AM
October 11, 2022
Room: 414
Location: David L. Lawrence Convention Center

Session Chair: Manabu Fukushima, National Institute of Advanced Industrial Science and Technology (AIST); Daniel Kopp, Rutgers, The State University of New Jersey; Surojit Gupta, University of North Dakota; Valerie Wiesner, NASA Langley Research Center


8:00 AM  Invited
Sustainable Processing of Composite Materials: Daniel Kopp1; Paniz Foroughi1; Paul Antonick1; Noemie Denis1; Richard Riman1; 1Rutgers, The State University of New Jersey
    Utilization of captured carbon dioxide (CO2) by converting it into valuable products, such as fuels, chemicals, plastics, and building materials is needed to balance the carbon budget through 2050 and beyond. This presentation will describe two breakthrough processes invented and patented by Rutgers University for the production of low-carbon composites that have applications ranging from electronics to construction. The first process, namely, Hydrothermal Vapor Synthesis (HVS), enables the production of inorganic oxides at temperatures <500˚C, which is up to 1000˚C lower than the temperatures of traditional pyrothermal reactions. The second process, called Gas-assisted Reactive Hydrothermal Liquid Phase Densification (g-rHLPD), enables low temperature (<100˚C) densification by using CO2 as a reactant with anhydrous oxides for creating strong, dense carbonate-bound ceramics with outstanding physical and chemical properties. Composite materials produced with these technologies will be presented and compared with the incumbent materials to demonstrate the outstanding low-carbon future awaiting materials manufacturing.

8:30 AM  
Thermal Insulators Prepared by Gelation Freezing Route and Their Energy Efficiency in Prototype Furnace: Manabu Fukushima1; 1National Institute of Advanced Industrial Science and Technology (AIST)
    Mullite based thermal insulators were fabricated by freezing gels containing raw powders, drying under vacuum, followed by sintering. The relationship between the microstructure, mechanical and thermal properties of the resulting ceramics was discussed using various simulation. Also, we will report the energy efficiency in prototype furnace with developed insulators.

8:50 AM  
The Effect of Sawdust Particle Size Distribution on the Hydraulic Conductivity of Low-cost Ceramic Water Filters: Ian Nettleship1; Chuyuan Zheng1; 1University of Pittsburgh
    Low-cost ceramic water filters are usually manufactured from locally sourced clays and waste sawdust, a byproduct of local lumber production. While antibacterial efficacy has been demonstrated, there is little understanding of the effect of sawdust particle size distribution on filter properties. This study used sawdust less than 850 micrometers in size and divided it into four size fractions, each fraction accounting for approximately 25 weight% of the full size distribution. Then the effect of the sawdust size fraction on hydraulic conductivity and bulk density of the filters were determined as a function of the weight fraction of sawdust in the filter formulation. All the sawdust fractions showed the same rule of mixtures relationship between bulk density and sawdust content while the hydraulic conductivity varied by as much as three orders of magnitude. Three-dimensional imaging of the pore structures in the materials will be used to discuss the structure-property relationships.

9:10 AM  
Preparation of Inorganic Green Pigments via a Green Process: Allen Apblett1; Travis Reed1; 1Oklahoma State University
    Inorganic pigments can be superior to organic pigments with respect to resistance to oxidative deterioration, fading when exposed to sunlight, and, in some cases, toxicity. It was discovered in this investigation that green pigments could be prepared by the pyrolysis of low-temperature single source precursors. The latter were prepared by precipitation of a solid solution of mixed zinc and cobalt salts of 2-oximinopropionate containing 5 to 10% of cobalt versus zinc. These complexes decompose at low temperature in the solid state to produce fine powders of metal oxides with the simultaneous release of acetonitrile, carbon dioxide, and water. The cobalt-doped zinc oxide produced in this matter is a dark green in color. Beyond use as a pigment, this material can also be applied as a bactericidal agent to control water borne bacterial pathogens and as a photocatalyst for the degradation of methylene blue dye in aqueous medium.

9:30 AM  Invited
SiOCN Corrosion Resistant Coatings on Stainless Steel: Hyeon Joon Choi1; Kathy Lu1; 1Virginia Tech
    Polymer derived ceramics(PDCs) are being studied as coating materials to prevent corrosion of nuclear fuel storage made from stainless steel. Polymer coatings can be applied to the stainless surface by solution processes such as spin coating. However, the coatings often undergo volume shrinkage of 50% or more during the polymer conversion to ceramics. As the coating thicker, cracks form and compromise its role as a protective layer. In this study, a SiOCN coating system has been developed using a mixture of polysilazane(PHPS) and polysiloxane(PSO), sealed by a pure SiON layer. When the two precursors are mixed in an appropriate ratio to form a film, a crack-free film greater than 1μm forms. This allows us to increase the coating thickness from ~400nm to more than 1µm. Furthermore, the hardness and Young’s modulus of the film were 10.8GPa and 100GPa, respectively, showing enhanced mechanical properties compared to the single layer SiON film.

10:00 AM Break

10:20 AM  Keynote
Protective Coatings for Lunar Dust Tolerant Applications: Valerie Wiesner1; Glen King1; Keith Gordon1; Christopher Wohl1; Lopamudra Das2; Jonathan Hernandez2; 1NASA Langley Research Center; 2National Institute of Aerospace
    To support long duration, sustainable missions on the Moon’s surface, materials capable of withstanding the harsh lunar environment are critically needed. Lunar dust significantly threatens the durability and reusability of components and vehicles due to its fine, jagged morphology and highly abrasive nature. These characteristics result in the particles eroding, adhering and/or embedding onto component surfaces and into device confined geometries (e.g., gear housing, interlocking systems, etc.) potentially leading to premature failure. The aim of this work is to identify and characterize wear-resistant materials, including advanced ceramics, for use as protective coatings to minimize abrasion and adhesion caused by lunar dust. Results from testing and evaluation methods devised to elucidate and mimic aspects of lunar dust degradation, including adhesion, abrasion, and erosion, as well as the lunar environment, will be presented. Discussion on balancing the need for dust management and tolerance versus dust adhesion mitigation will be shared in context of relevant lunar applications within the NASA Lunar Occupancy Dust Surface Separation Technologies effort, which is part of a NASA-wide effort to enable a sustained lunar presence through the Lunar Surface Innovation Initiative.

10:50 AM  
Selective Eliminate the Risk of High Toxicity Mercury from Valuable Selenium-enriched Material Using Vacuum Volatilization: Yunke Wang1; Guozheng Zha1; 1Kunming University of Science and Technology
    Selenium (Se) plays a critical role in a series of future high-tech applications such as energy and optoelectronic fields because of its excellent semiconductor characteristics. copper electrolytic refining anode slime is the most important raw material for selenium extraction. When the sulfurized calcination treatment of copper anode slime, the selenium volatilizes as the form of SeO2 flue gas and then reduced by SO2 into a crude elemental selenium. In this process, the high toxicity mercury would entere into the crude selenium at the same time. Current processes are constrained by complex procedures, serious pollution, and ineffectiveness. This study provides an efficient and environmentally friendly process to remove high toxicity elements and purify selenium from high-value hazardous selenium material, and extract high-purity selenium for further use, which has important industrial applications.