Structure-property relationships in sol-gel-derived thin films

Conference · Mon Aug 01 00:00:00 EDT 1994

OSTI ID:10172023

Brinker, C J ^[1]; Raman, N K; Sehgal, R; Hua, D W; Ward, T L ^[2]; Logan, M N; Assink, R A ^[3]

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1. Sandia National Labs., Albuquerque, NM (United States). Ceramic Synthesis and Inorganic Chemistry Dept.
2. Univ. of New Mexico, Albuquerque, NM (United States). Center for Micro-Engineering Ceramics
3. Sandia National Labs., Albuquerque, NM (United States)

The molecular-scale species distributions and intermediate-scale structure of silicate sols influence the microstructures of the corresponding thin films prepared by dip-coating. Using multi-step hydrolysis procedures, the authors find that, depending on the sequence and timing of the successive steps, the species distributions (determined by {sup 29}Si NMR) and intermediate scale structure (determined by SAXS) can change remarkably for sols prepared with the same nominal composition. During film formation, these kinetic effects cause differences in the efficiency of packing of the silicate species, leading to thin film structures with different porosities.

• Research Organization: Sandia National Labs., Albuquerque, NM (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States); Electric Power Research Inst., Palo Alto, CA (United States); Gas Research Inst., Chicago, IL (United States)
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 10172023
• Report Number(s): SAND--94-1669C; CONF-930304--33; ON: DE94016149; BR: GB0103012
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360201
360202
360204
DIP COATING
MORPHOLOGY
NUCLEAR MAGNETIC RESONANCE
PHYSICAL PROPERTIES
PORE STRUCTURE
POROSITY
PRECURSOR
PREPARATION AND FABRICATION
SILICATES
SILICON 29
SILICON OXIDES
SOL-GEL PROCESS
SOLS
STRUCTURE AND PHASE STUDIES
THIN FILMS