Light weight optics made by glass thermal forming for future x-ray telescopes

2010 ◽  
Author(s):  
Anita Winter ◽  
Monika Vongehr ◽  
Peter Friedrich
Keyword(s):  
Light Weight ◽  
X Ray ◽  
Thermal Forming

scholarly journals Next generation astronomical x-ray optics: high angular resolution, light weight, and low production cost

2012 ◽  
Author(s):  
W. W. Zhang ◽  
M. P. Biskach ◽  
P. N. Blake ◽  
K.-W. Chan ◽  
J. A. Gaskin ◽  
...  
Keyword(s):  
Production Cost ◽  
Angular Resolution ◽  
High Angular Resolution ◽  
Light Weight ◽  
Next Generation ◽  
Ray Optics ◽  
X Ray

Pressureless Melt Infiltrated Non-Oxide Ceramic-Metal Composites

2008 ◽  
Vol 403 ◽  
pp. 251-252
Author(s):  
A. Kalemtas ◽  
Gürsoy Arslan ◽  
Ferhat Kara
Keyword(s):  
Oxide Ceramic ◽  
Light Weight ◽  
X Ray Diffraction ◽  
Infiltration Process ◽  
Metal Composites ◽  
X Ray ◽  
Melt Infiltration ◽  
In Situ Reactions ◽  
B4c Powder

In the present study highly dense (open porosity < 1 %), light-weight (d £ 2.85 g/cm3) and Al4C3-free non-oxide ceramic-metal composites were produced at comparatively low temperatures ( 1250°C) by pressurless melt infiltration. Phase analysis of the SiC-B4C-Al composites revealed that a significant amount of hygroscopic Al4SiC4 and Al4C3 phases were formed. Si3N4 powder was added in different amounts to the SiC-B4C powder batches to suppress formation of these phases via in-situ reactions during the infiltration process. X-ray diffraction results of the SiC-B4C-Si3N4-Al composites confirmed that the incorporation of Si3N4 to the SiC-B4C system reduced or eliminated the formation of the hygroscopic phases and resulted in in-situ formation of AlN, SiC and Si phases in the composite.

Thermal forming of glass microsheets for x-ray telescope mirror segments

2003 ◽  
Vol 42 (4) ◽  
pp. 724 ◽  
Author(s):  
Mario A. Jimenez-Garate ◽  
Charles J. Hailey ◽  
William W. Craig ◽  
Finn E. Christensen
Keyword(s):  
X Ray ◽  
Thermal Forming

Unbreakable Light-Weight Projection Slides Made of Unused X-Ray Film

JAMA ◽  
1963 ◽  
Vol 185 (8) ◽  
pp. 672
Author(s):  
Jack Kevorkian
Keyword(s):  
Light Weight ◽  
X Ray

Light-weight glass mirror systems for future x-ray telescopes

2013 ◽  
Author(s):  
Anita Winter ◽  
Elias Breunig ◽  
Vadim Burwitz ◽  
Peter Friedrich ◽  
Gisela Hartner ◽  
...  
Keyword(s):  
Light Weight ◽  
X Ray

Investigation of magnetically smart films applied to correct the surface profile of light weight X-ray optics in two directions

2015 ◽  
Author(s):  
Xiaoli Wang ◽  
Youwei Yao ◽  
Jian Cao ◽  
Semyon Vaynman ◽  
Michael E. Graham ◽  
...  
Keyword(s):  
Surface Profile ◽  
Light Weight ◽  
Ray Optics ◽  
X Ray

Cold shaping of thin glass foils: a fast and cost-effective solution for making light-weight astronomical x-ray optics

2015 ◽  
Author(s):  
M. M. Civitani ◽  
S. Basso ◽  
O. Citterio ◽  
M. Ghigo ◽  
B. Salmaso ◽  
...  
Keyword(s):  
Cost Effective ◽  
Light Weight ◽  
Effective Solution ◽  
Ray Optics ◽  
Thin Glass ◽  
X Ray

scholarly journals Characterization of failure in light-weight soil with air foam under unconfined compression using X-ray CT scanner

2000 ◽  
Vol 3 ◽  
pp. 57-64 ◽  
Author(s):  
Jun OTANI ◽  
Toshifumi MUKUNOKI ◽  
Takeshi NAGATOME ◽  
Yoshiaki KIKUCHI
Keyword(s):  
Light Weight ◽  
Ct Scanner ◽  
Unconfined Compression ◽  
X Ray

Effect of Preparation on Standard Dry Density and Strength of Foamed Cement by Orthogonal Test

2014 ◽  
Vol 577 ◽  
pp. 1119-1122
Author(s):  
Na Li ◽  
Qi Wang ◽  
Peng Song
Keyword(s):  
Electron Microscopy ◽  
Thermal Conductivity ◽  
High Strength ◽  
Xrd Analysis ◽  
Orthogonal Test ◽  
Dry Density ◽  
Light Weight ◽  
X Ray Diffraction ◽  
X Ray ◽  
Scanning Electron

In this paper, we studied the effect of preparation on standard dry density and strength of foamed cement by orthogonal test. The results indicate that the more excellent combination is A1B1C1, namely G1, the standard dry density is 376 kg/m3, the flexural and compressive strengths are 0.43 MPa and 0.8 MPa respectively, and the thermal conductivity is 0.074 W/(m·K), which conforms to the characteristics of light weight and high strength. Fewer Ca (OH)2 crystals and more C-S-H gel generated in G1 through scanning electron microscopy (SEM) and X-ray diffraction (XRD) analysis is the reason for its high strength.

scholarly journals Evaluation of Physical Property of Light-Weight Soil with Air Foam Using X-Ray CT Method.

2000 ◽  
pp. 269-278 ◽  
Author(s):  
Jun OTANI ◽  
Toshifumi MUKUNOKI ◽  
Yoshiaki KIKUCHI
Keyword(s):  
Physical Property ◽  
Light Weight ◽  
X Ray
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