Zerodur® — A Low Thermal Expansion Glass Ceramic for Optical Precision Applications

1995 ◽  
pp. 107-214 ◽  
Author(s):  
Reiner Haug ◽  
Wilfried Heimerl ◽  
Rüdiger Hentschel ◽  
Hartmut Höness ◽  
Alfred Jacobsen ◽  
...  
Keyword(s):  
Thermal Expansion ◽  
Glass Ceramic ◽  
Low Thermal Expansion

Material and application study for low thermal expansion glass-ceramic CLEARCERAM series

2005 ◽  
Author(s):  
Kousuke Nakajima ◽  
Toshihide Nakajima ◽  
Nobuo Kawasaki ◽  
Yoshiyuki Owari
Keyword(s):  
Thermal Expansion ◽  
Glass Ceramic ◽  
Application Study ◽  
Low Thermal Expansion

Radiation effects on a low‐thermal‐expansion glass ceramic

1987 ◽  
Vol 62 (8) ◽  
pp. 3488-3490 ◽  
Author(s):  
T. E. Tsai ◽  
P. L. Higby ◽  
E. J. Friebele ◽  
D. L. Griscom
Keyword(s):  
Thermal Expansion ◽  
Glass Ceramic ◽  
Radiation Effects ◽  
Low Thermal Expansion

Influence of B2O3 on Dielectric, Mechanical, and Thermal Properties of MgO-Al2O3-SiO2 Glass-Ceramics

2019 ◽  
Vol 821 ◽  
pp. 435-439
Author(s):  
Bo Li ◽  
Ke Jing ◽  
Hai Bo Bian
Keyword(s):  
Activation Energy ◽  
Thermal Expansion ◽  
Thermal Properties ◽  
Low Temperature ◽  
Flexural Strength ◽  
Glass Ceramic ◽  
Glass Ceramics ◽  
Mechanical And Thermal Properties ◽  
Sintering Process ◽  
Low Thermal Expansion

Low temperature sintered MgO-Al2O3-SiO2 glass-ceramic with high mechanical and low thermal expansion was prepared for package. The remarkable influence of B2O3 addition on the electrical, mechanical, and thermal properties was fully investigated. A small amount of B2O3 promoted the sintering process and improved the densification of MAS. The kinetics via Kissinger method indicated that an appropriate B2O3 content decreased the activation energy and helped the occurrence of crystallization. Due to the increase of crystallinity and indialite phase, B2O3 addition significantly enhanced flexural strength and Young’s modulus. MAS doped with 3wt% B2O3 can be sintered at 900 °C and obtained good properties: σ = 229 MPa, φ = 86 GPa, α = 1.66×10-6 /°C, εr = 5.29, and tanδ = 5.9×10-4.

β-Spodumene Glass-Ceramic with Anomalous Low Thermal Expansion

2008 ◽  
Vol 39-40 ◽  
pp. 381-386 ◽  
Author(s):  
Akihiko Sakamoto ◽  
Yusuke Himei ◽  
Yoshio Hashibe
Keyword(s):  
Thermal Expansion ◽  
Mechanical Strength ◽  
Ceramic Material ◽  
Glass Ceramic ◽  
Silica Glass ◽  
Coefficient Of Thermal Expansion ◽  
Glass Ceramics ◽  
New Method ◽  
Low Thermal Expansion ◽  
Natural Stones

To survey new method for controlling thermal expansion of glass-ceramic material, we studied the coefficient of thermal expansion (CTE) and the microstructure of β-spodumene glass-ceramics. We found that the CTE of the β-spodumene glass-ceramics is remarkably reduced by introducing interstices at the boundary between the crystalline and glass phases. Despite its relatively low crystallinity (45vol%), a newly developed glass-ceramic showed an anomalous low thermal expansion of 7x10-7 /oC, which compares to that of silica glass. The mechanical strength of this glass-ceramic was at the same level as that of natural stones: marble and granite.

Development of Cast Glass-Ceramic Turbine Housings

1982 ◽  
Author(s):  
J. G. Lanning ◽  
D. A. Noll
Keyword(s):  
Thermal Expansion ◽  
Gas Turbine ◽  
Glass Ceramic ◽  
Process Development ◽  
Ceramic Materials ◽  
Ford Motor Company ◽  
Turbine Engine ◽  
Low Thermal Expansion ◽  
Turbine Housing ◽  
Engine Components

Corning became actively involved with vehicular gas turbine programs in 1952 during the development of a ceramic rotary regenerator core for the Chrysler automotive gas turbine. Material and process development research in this program led to efforts to apply very low thermal expansion, modest strength, sintered glass-ceramic materials to some of the static gas turbine engine components. One early program involved the first stage turbine plenum for the Ford Model 707 industrial gas turbine. Several process/material iterations ultimately led to the development of a glass-ceramic turbine housing for the Ford Motor Company Model 820 ceramic gas turbine. The housing required a sophisticated slip cast process and a special lithium aluminosilicate (LAS) glass-ceramic composition (Corning Code 9458) with a total thermal expansion between room temperature and 1200C of about 700 ppm. This paper reviews this project and indicates some possible directions for future developments. The design concept and application of the glass-ceramic housing to the Ford Model 820 ceramic gas turbine is discussed in an associated ASME paper by Mr. A. F. McLean of Ford Motor Company.

Development of Low Thermal Expansion Design Method for Advanced Grid Structure

2020 ◽  
Vol 68 (3) ◽  
pp. 108-114
Author(s):  
Michihito Matsumoto ◽  
Kazushi Sekine ◽  
Masami Kume
Keyword(s):  
Thermal Expansion ◽  
Design Method ◽  
Grid Structure ◽  
Low Thermal Expansion
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