Expert Details

Expert in Powder Processing/Fabrication

Expert ID: 718354 Massachusetts, USA

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Expert (prefers Expert ) has devoted most of his recent career to developing processing techniques, procedures, equipment, and control systems for preparing powders and forming/shaping components. This work has covered the full range of operation necessary for manufacturing ceramic components. He is familiar with powder synthesis (wet and Expert), powder preparation (wet and Expert), binders, forming/shaping (wet and Expert, casting, pressing) and sintering. This experience includes both laboratory research and commercial manufacturing.

Expert has extensive experience with dispersion, particle synthesis, particle separation, properties measurement, and powder processing and characterization of ceramic systems. He has worked with a wide range of materials such as ferrites, titanates, oxides, carbides, and nitrides applied to electronic, structural, and other applications, as well as ceramic, metal, and ceramic dental materials.

Expert has devised new processing techniques and schemes such as the semicontinuous classification of submicron size powders, and the continuous chemical synthesis of monosized ceramic powders. His work has included dispersion and slip/slurry preparation, and forming/shaping techniques. He has developed procedures for semicontinuous production of narrow size distribution powders, and application of instrumentation, sensors, and controls for liquid based processing of powders.

Expert has used centrifuges to classify (separate) sub-micron particles in a semicontinuous separation system and to centrifugally cast net-shape parts from high solids content suspensions (slurries).

Expert is experienced with plasma spraying to prepare and apply composite materials for a variety of applications including electrical resistance heating and chemical corrosion resistance. He has used plasma spraying for the direct fabrication of a variety of components and shapes from metal, ceramic, and composite materials. He has also worked on the development of multi-layered graded and coated parts fabrication as well as single composition, pipes, crucibles, and other items. Expert was involved with preparing powders for use in plasma spray equipment and using powders for forming devices (components) as well as coatings. He has developed powders for controlled (engineered) microstructures and techniques to fabricate net-shape, controlled, macrostructure components. He has also used plasma spraying to fabricate magnetohydrodynamics (MHD) electrode modules.

Expert's work in this area is mainly with ceramic materials, but also includes metals, polymers, and mixed material composites. He is familiar with metal matrix (MMC) and ceramic matrix (CMC) composites, as well as using and developing interconnected, interpenetrating phase composites. These materials were developed for various specific applications, such as electrical resistance heating, and for dental prostheses. Expert has worked with materials for electrical and mechanical (structural) applications. Forming (fabrication) techniques for these materials (metals, ceramics, cermets) include arc plasma spraying, colloid (filter) pressing, slip casting, Expert pressing, and centrifugal casting. Primarily, his efforts have been directed to net shape fabrication.

Process design for ceramic powder handling. Particle size classification, micron and sub-micron size range.Process design for chemical manufacture of specific size ceramic particles.Design and construction of test equipment for strength measurements at 1,000 C.

Expert may consult nationally and internationally, and is also local to the following cities: Boston, Massachusetts - Worcester, Massachusetts - Springfield, Massachusetts - Lowell, Massachusetts - Cambridge, Massachusetts - Brockton, Massachusetts - New Bedford, Massachusetts - Hartford, Connecticut - Manchester, New Hampshire - Providence, Rhode Island

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Year Degree Subject Institution
Year: 1971 Degree: ScD Subject: Ceramics Institution: MIT
Year: 1959 Degree: BS Subject: Physical Metallurgy Institution: MIT

Work History

Years Employer Title Department Responsibilities
Years: 1994 to 2019 Employer: Boston University Title: Associate Research Professor Emeritus Department: Restorative Sciences & Biomaterials Responsibilities: Expert is involved in research of dental materials: ceramics, polymers, and composites. His responsibilities also include: supervision of student research; design and fabrication of test apparatus and fixtures; and, design and construction of processing equipment.
Years: 1993 to 1994 Employer: Avalon Materials Technology Title: Consultant Department: Responsibilities: Expert worked on the development of new materials processing techniques.
Years: 1975 to 1993 Employer: MIT Ceramics Processing Resch Lab, MIT Materials Processing Center Title: Laboratory Manager Department: Materials Processing Center Responsibilities: Expert supervised the operation of laboratory, and supervised student research. He also conducted research of ceramic materials processing, and design and construction of processing equipment.
Years: 1984 to 1986 Employer: Ceramics Process Systems Title: Vice President and Co-founder Department: Responsibilities: He supervised the operation of laboratory facilities; designed and constructed process equipment; and, design of chemical and ceramic powder preparation processes. He also did materials processing research.

International Experience

Years Country / Region Summary
Years: to Present Country / Region: Germany Summary: Evaluation of dental materials processes. Design of new manufacturing processes.
Years: to Present Country / Region: Switzerland Summary: Cooperative research for ceramic dental materials for CAD/CAM applications.

Career Accomplishments

Awards / Recognition
Expert received an IR100 (now R&D100 magazine) award. He has been an invited speaker as well.
Publications and Patents Summary
He has six patents,
numerous publications in refereed journals. He also has a book published.

Additional Experience

Expert Witness Experience
Expert witness.
State court.
Depositions and hearing.
Training / Seminars
American Ceramic Society. Short Course in
Ceramics Processing.

MIT Summer Course in
Ceramics Processing and Manufacturing
Vendor Selection
He has specified vendors and particular equipment for ceramics processing.

Fields of Expertise

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