Dimensional stability of fused silica, Invar, and several ultralow thermal expansion materials

1976 ◽  
Vol 15 (8) ◽  
pp. 1898 ◽  
Author(s):  
J. W. Berthold ◽  
S. F. Jacobs ◽  
M. A. Norton
Keyword(s):  
Thermal Expansion ◽  
Dimensional Stability ◽  
Fused Silica

Dimensional Stability of Fused Silica, Invar, and Several Ultra-low Thermal Expansion Materials

Metrologia ◽  
1977 ◽  
Vol 13 (1) ◽  
pp. 9-16 ◽  
Author(s):  
J W Berthold ◽  
S F Jacobs ◽  
M A Norton
Keyword(s):  
Thermal Expansion ◽  
Dimensional Stability ◽  
Fused Silica ◽  
Low Thermal Expansion

Dimensional Stability of Fused Silica, Invar, and Several Ultralow Thermal Expansion Materials

1976 ◽  
Author(s):  
J. W. Berthold ◽  
Jacobs III ◽  
Norton S. F. ◽  
M. A.
Keyword(s):  
Thermal Expansion ◽  
Dimensional Stability ◽  
Fused Silica

Preparation and Characterization of Fused Silica Micro-Powders and Ceramics

2011 ◽  
Vol 412 ◽  
pp. 129-132 ◽  
Author(s):  
Jin Ye Niu ◽  
Zhi Wei Chen ◽  
Liu Feng ◽  
Zheng Min Li ◽  
Min Tan
Keyword(s):  
Particle Size ◽  
Thermal Expansion ◽  
Lactic Acid ◽  
Milling Time ◽  
Bending Strength ◽  
Slip Casting ◽  
Volume Density ◽  
Fused Silica ◽  
Lactic Acid Content

Fused silica micro-powders with D50of 1.8μm were firstly prepared by ball milling. Effects of milling time on particle size distribution and microstructures of the powders were discussed. Then, the green compacts with volume density of 1.86g/cm3was obtained by slip casting with lactic acid as dispersant. Effects of lactic acid content on apparent viscosity of the slurry, thickness and density of the green compacts were investigated. Finally, fused silica ceramics with thermal expansion coefficient of 0.56∙10-6/°C, bending strength of 64MPa and volume density of 1.94g/cm3were prepared.

Thermal expansion and dimensional stability of unidirectional and orthogonal fabric M40/AZ91D composites

2010 ◽  
Vol 20 (1) ◽  
pp. 47-53 ◽  
Author(s):  
Mei-hui SONG ◽  
Gao-hui WU ◽  
Guo-qin CHEN ◽  
Wen-shu YANG
Keyword(s):  
Thermal Expansion ◽  
Dimensional Stability

Thermal expansion uniformity of Heraeus-Amersil TO8E fused silica

1981 ◽  
Vol 20 (20) ◽  
pp. 3461 ◽  
Author(s):  
S. F. Jacobs ◽  
D. Shough
Keyword(s):  
Thermal Expansion ◽  
Fused Silica

Zirconium tungstate reinforced cyanate ester composites with enhanced dimensional stability

2009 ◽  
Vol 24 (7) ◽  
pp. 2235-2242 ◽  
Author(s):  
Prashanth Badrinarayanan ◽  
Ben Mac Murray ◽  
Michael R. Kessler
Keyword(s):  
Thermal Expansion ◽  
Dimensional Stability ◽  
Coefficient Of Thermal Expansion ◽  
Negative Thermal Expansion ◽  
Thermomechanical Analysis ◽  
Dynamic Mechanical Properties ◽  
Filler Loading ◽  
Cyanate Ester ◽  
Scanning Calorimetry ◽  
Zirconium Tungstate

Zirconium tungstate (ZrW2O8) is a unique ceramic material characterized by isotropic negative thermal expansion behavior over a wide temperature range. Incorporation of ZrW2O8 is expected to improve the dimensional stability of polymers by reducing the overall coefficient of thermal expansion (CTE). In this work, the thermal and dynamic mechanical properties of a bisphenol E cyanate ester reinforced with various loadings of ZrW2O8 are examined. Thermomechanical analysis indicates that the incorporation of ZrW2O8 results in a decrease in CTE at temperatures above and below the glass transition temperature (Tg) of the neat resin. The dynamic storage moduli of the composites reinforced with ZrW2O8 are found to increase with increasing filler loading. Furthermore, the various phase behaviors exhibited by ZrW2O8 are also examined by differential scanning calorimetry measurements.

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