Neutron-scattering studies of nitride, oxide, and phosphate ceramics and their relationship with molecular-dynamics simulations of high-temperature properties

Conference · Sat Nov 01 00:00:00 EST 1997

OSTI ID:554849

Loong, C K ^[1]

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1. Argonne National Lab., IL (United States). Intense Pulsed Neutron Source Div.

Currently, the strength and reliability of nitride and carbide ceramics are not sufficient to meet the demands of high-tech applications such as heat engines. A large R and D effort is needed to advance the field of ceramic science and engineering. The strength of ceramics depends on both the nature of atomic bonding such as covalency versus ionicity and the microstructure such as flaws and stress within the materials. The length scale of these influential factors ranges from 0.1 to 5,000 nm, thus presenting a challenge to experimentalists for a complete, quantitative characterization. The method of neutron scattering provides distinct advantages. In this paper, the authors present the neutron-scattering results of several important nitride oxide, and phosphate ceramics and point out the connections between the neutron data and computer simulations towards the goal of designing high-temperature materials.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE Office of Energy Research, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 554849
• Report Number(s): ANL/IPNS/CP-94799; CONF-9707128-; ON: DE98050523; TRN: 98:008792
• Resource Relation: Conference: Computer aided design of high temperature materials conference, Santa Fe, NM (United States), 30 Jul - 2 Aug 1997; Other Information: PBD: [1997]
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
66 PHYSICS
CERAMICS
DIAGNOSTIC TECHNIQUES
COMPUTER-AIDED DESIGN
RESEARCH PROGRAMS
NEUTRON DIFFRACTION
SMALL ANGLE SCATTERING
NEUTRON SPECTROSCOPY
COMPUTERIZED SIMULATION
MOLECULAR DYNAMICS METHOD
SILICON OXIDES
SILICON NITRIDES
ALUMINIUM OXIDES
ALUMINIUM NITRIDES
PHOSPHATES
HEAT RESISTANT MATERIALS