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Oyo Buturi, 1974 Some of the next articles are maybe not open access.
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Porous fused silica ceramics prepared by gelcasting using multigrade fused silica powders
Journal of Alloys and Compounds, 2020Abstract Porous fused silica ceramics were successfully prepared by gelcasting using N, N–dimethylacrylamide (DMAA) as gelling agent and multigrade powders as starting materials. The results suggest that the ratio of fine–grained to coarse–grained mixed powders, solid loading and sintering temperature were highly correlated with microstructure and ...
Wei Wan, Tai Qiu, Limei Pan
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Journal of the European Ceramic Society, 2001
Abstract The threshold stress intensity factor for sub-critical crack growth in fused silica was measured using the interrupted static fatigue (ISF) test and from observations of indentation crack growth under load. Good agreement was obtained between the two techniques with values of 0.31–0.34 MPa√m and 0.30±0.02 MPa√m, respectively.
Sglavo, Vincenzo Maria, D. Green
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Abstract The threshold stress intensity factor for sub-critical crack growth in fused silica was measured using the interrupted static fatigue (ISF) test and from observations of indentation crack growth under load. Good agreement was obtained between the two techniques with values of 0.31–0.34 MPa√m and 0.30±0.02 MPa√m, respectively.
Sglavo, Vincenzo Maria, D. Green
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2013 IEEE 26th International Conference on Micro Electro Mechanical Systems (MEMS), 2013
This paper reports detailed characterization results of deep reactive ion etching of fused silica with three different masking materials: single-crystal Si, negative photoresist KMPR and SU-8. With an optimized etch recipe, KMPR and SU-8 show higher effective mask selectivity, are easier to integrate and remove than Si, making them better masks for ...
Zongliang Cao +7 more
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This paper reports detailed characterization results of deep reactive ion etching of fused silica with three different masking materials: single-crystal Si, negative photoresist KMPR and SU-8. With an optimized etch recipe, KMPR and SU-8 show higher effective mask selectivity, are easier to integrate and remove than Si, making them better masks for ...
Zongliang Cao +7 more
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SPIE Proceedings, 2016
In over 100 years of quartz glass fabrication, the applications and the optical requirements for this type of optical material have significantly changed. Applications like spectroscopy, UV flash lamps, the Apollo missions as well as the growth in UV and IR applications have directed quartz glass development towards new products, technologies or ...
F. Nürnberg, B. Kühn, K. Rollmann
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In over 100 years of quartz glass fabrication, the applications and the optical requirements for this type of optical material have significantly changed. Applications like spectroscopy, UV flash lamps, the Apollo missions as well as the growth in UV and IR applications have directed quartz glass development towards new products, technologies or ...
F. Nürnberg, B. Kühn, K. Rollmann
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Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1967
Abstract Silica fibres and flame polished rods having strengths around 600 Kg/mm2 were prepared and the preparation conditions studied. The effects on fibre strengths of atmospheric and temperature changes, and of variations in rate of stressing and previous heat treatment, were extensively investigated.
B. A. Proctor, I. Whitney, J. W. Johnson
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Abstract Silica fibres and flame polished rods having strengths around 600 Kg/mm2 were prepared and the preparation conditions studied. The effects on fibre strengths of atmospheric and temperature changes, and of variations in rate of stressing and previous heat treatment, were extensively investigated.
B. A. Proctor, I. Whitney, J. W. Johnson
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Improvement in polishing of fused-silica parts
Applied Optics, 1991High-power laser optics can require high-quality polished surfaces for damage resistance. Fabrication efficiency for producing quality surfaces becomes an important cost consideration. Our systematic study of fused-silica polishing conditions has led to the discovery that enhanced removal efficiency and higher quality optical surfaces can be achieved ...
A, Tesar, B, Fuchs, P, Hed
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Laser Polishing of Fused Silica
International Optical Design Conference and Optical Fabrication and Testing, 2010Polishing results of polishing fused silica with CO2-laser radiation with processing rates up to 1 cm²/s are presented.
Annika Richmann +2 more
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The annealing dynamics of fused silica
Journal of Non-Crystalline Solids, 1971Abstract The time variation of the volume of fused silica densified by pressure or neutron irradiation is described by a log Gaussian distribution of relaxation times with a temperature independent width parameter. Both isothermal and step-annealing schemes are adequately represented in this fashion for over twelve decades of variation in a reduced ...
S.-Y. Hsich, C.J. Montrose, P.B. Macedo
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Diffusion of Oxygen in Fused Silica
Journal of the American Ceramic Society, 1965Oxygen diffusion in fused silica was measured over the range 850° to 1250°C by means of heterogeneous isotope exchange. In this temperature range and at 1 atm oxygen pressure the diffusion coefficients can be represented by the relation: D = 2 × 10 −9 ...
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