endobj xref 253 31 0000000016 00000 n 0000014024 00000 n 0000018974 00000 n 0000001356 00000 n 0000007609 00000 n 0000000916 00000 n Temperature Expansion - Thermal expansion of pipes and tubes - stainless steel, carbon steel, copper, plastics and more; Thermodynamics - Effects of work, heat and energy on systems; Material Properties - Material properties for gases, fluids and solids - densities, specific heats, viscosities and more ; Related Documents . Clown Fear Phobia, Icms State Courts, Combustible Materials, Uva Basketball Roster 2020-21, Metaphors In Just Walk On By Brent Staples, Shade Structure Design, Wladyslaw Szpilman, " />
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zerodur coefficient of thermal expansion

The ZERODUR® melt is cast into molds and inserted into annealing ovens to cool the raw casting down to room temperature in a controlled way for several weeks. 0000011376 00000 n This property makes these mirrors ideal for high-power systems like industrial machining lasers, as well as other applications that are sensitive to thermally induced beam drift. upon request) Optimized for application temperature profile. 0000017780 00000 n 0000008154 00000 n 0000003019 00000 n 0000003766 00000 n * CTE (0°C; 50°C) describes the mean coefficient of linear thermal expansion in the temperature range 0 °C to 50 °C. 0000002532 00000 n 0000007093 00000 n The tight tolerance on CTE, ±0.007×10−6 K−1, allows high-precision applications. 0000036199 00000 n 0000022703 00000 n 0000001563 00000 n �`Ie>�� ~����R557�8^�P9n�ll���A��K��� �{��T�4�������bq�:7��&� �n� endstream endobj 25 0 obj <>>> endobj 26 0 obj <>/ExtGState<>/Font<>/ProcSet[/PDF/Text/ImageC]/XObject<>>>/Rotate 0/Thumb 19 0 R/TrimBox[0.0 0.0 595.276 793.701]/Type/Page>> endobj 27 0 obj <> endobj 28 0 obj [/ICCBased 40 0 R] endobj 29 0 obj <> endobj 30 0 obj <> endobj 31 0 obj <> endobj 32 0 obj <> endobj 33 0 obj <>stream 0000003118 00000 n 0000001606 00000 n H�\�͎�@�=OQ��E�[�jBLP��q�J�dD������t'cbs��. 0000001024 00000 n MSE Supplies stands behind our promise for h igh quality products with competitive pricing and dependable technical support from PhD Scientists. 0000006836 00000 n Zerodur ® 's* coefficient of thermal expansion is 0 ± 0.100 x 10 -6 /°C, which is significantly smaller than the value for fused silica, 0.55 x 10 -6 /°C. Zerodur (notation of the manufacturer: ZERODUR®), a registered trademark of Schott AG, is a lithium-aluminosilicate glass-ceramic produced by Schott AG since 1968. Temperature is a monotonic function of the average molecular kinetic energy of a substance. Our dialometry testing services use NETZSCH DIL 402 PC or similar instrument. [4] It has been used for a number of very large telescope mirrors including GTC, Keck I, Keck II,[5] and SOFIA, as well as some smaller telescopes (such as the GREGOR Solar Telescope). 0000002930 00000 n The mechanical properties of Zerodur®are mentioned in the table below: *All properties are at room temperature unless otherwise noted. 0000002444 00000 n 0000001562 00000 n 0000001123 00000 n 0000002185 00000 n 0000002818 00000 n 0000036195 00000 n When a substance is heated, molecules begin to vibrate and move more, usually creating more distance between themselves. %PDF-1.4 %���� Zerodur (notation of the manufacturer: ZERODUR®), a registered trademark of Schott AG,[2] is a lithium-aluminosilicate glass-ceramic[3] produced by Schott AG since 1968. 0000005681 00000 n 0000006435 00000 n ZERODUR. %PDF-1.4 %���� y���`q����Z��� - 0000007009 00000 n The glassy raw casting still has a coefficient of thermal expansion (CTE) of ~+3*10-6 K-1. 0000040394 00000 n 0000003607 00000 n 0000001176 00000 n 0000009005 00000 n 0000009593 00000 n 0000000776 00000 n 0000006275 00000 n Zerodur has both an amorphous (vitreous) component and a crystalline component. 0000002078 00000 n 24 0 obj <> endobj xref 24 24 0000000016 00000 n With its very low coefficient of thermal expansion it can be used to produce mirrors that retain acceptable figures in extremely cold environments such as deep space. trailer <<764971B3A478406F8009493D58C48DFB>]/Prev 446329/XRefStm 1176>> startxref 0 %%EOF 283 0 obj <>stream 0000010223 00000 n trailer <<7A8AE7C541DB47E99BEA63F3FE512263>]/Prev 360432>> startxref 0 %%EOF 47 0 obj <>stream 0000002333 00000 n 0000005766 00000 n With its very low coefficient of thermal expansion it can be used to produce mirrors that retain acceptable figures in extremely coldenvironments such as deep space. 0000008496 00000 n 0000002220 00000 n Altho… Zerodur M is a new glass - ceramic produced by Schott Glaswerke (Mainz), which has a near-zero thermal expansion coefficient at ambient temperature and improved dimensional stability on thermal cycling compared with the earlier Zerodur. 0000002704 00000 n 0000014124 00000 n Its most important properties[7] are: Learn how and when to remove this template message, "Secondary Mirror of ELT Successfully Cast - Largest convex mirror blank ever created", "Fracture Toughness and Crack Growth of Zerodur", "Properties of Zerodur Mirror Blanks for Extremely Large Telescopes", "Figure testing of 300 mm Zerodur mirrors at cryogenic temperatures", "ZERODUR® Extremely Low Expansion Glass Ceramic: SCHOTT Advanced Optics - SCHOTT AG", http://optomechanicalservices.com/Papers.html, "ZERODUR - Deterministic Approach for Strength Design", "A study of Damage during Impact in Zerodur", https://en.wikipedia.org/w/index.php?title=Zerodur&oldid=966496078, Wikipedia introduction cleanup from August 2015, Articles covered by WikiProject Wikify from August 2015, All articles covered by WikiProject Wikify, Creative Commons Attribution-ShareAlike License, Good chemical stability similar to that of, This page was last edited on 7 July 2020, at 12:29. Related Topics . 0000007598 00000 n h�b``�g``ub`a`xf� �� �@������a����g�����w�Kׁ. [6] Although it has advantages for applications requiring a coefficient of thermal expansion less than that of borosilicate glass, it remains very expensive as compared to borosilicate. ZERODUR® is now available in the following different grades of the coefficient of linear thermal expansion (CTE) that range between 0 °C to 50 °C: CTE Grades CTE (0 °C; 50 °C)* ZERODUR® Expansion Class 2 0 ± 0.100 ppm/K ZERODUR® Expansion Class 1 0 ± 0.050 ppm/K ZERODUR® Expansion Class 0 0 ± 0.020 ppm/K ZERODUR® Expansion Class 0 SPECIAL 0 ± 0.010 ppm/K Thermal expansion is the tendency of matter to change its shape, area, volume, and density in response to a change in temperature, usually not including phase transitions.. SPECIAL and EXTREME: The grades. 0000022586 00000 n 0000004255 00000 n 0000036353 00000 n h�b``�g``�f`f`ظ����X����� gA�BF��d���e? Choose professional Dilatometry and Thermal Expansion Coefficient (CTE) Testing Services from MSE Analytical Services. 0000036081 00000 n 0000008088 00000 n 0000013445 00000 n 0000036238 00000 n It has been used for a number of very large telescope mirrors including GTC, Keck I, Keck II, and SOFIA, as well as some smaller telescopes (such as the GREGOR Solar Telescope). 0000005101 00000 n 253 0 obj <> endobj xref 253 31 0000000016 00000 n 0000014024 00000 n 0000018974 00000 n 0000001356 00000 n 0000007609 00000 n 0000000916 00000 n Temperature Expansion - Thermal expansion of pipes and tubes - stainless steel, carbon steel, copper, plastics and more; Thermodynamics - Effects of work, heat and energy on systems; Material Properties - Material properties for gases, fluids and solids - densities, specific heats, viscosities and more ; Related Documents .

Clown Fear Phobia, Icms State Courts, Combustible Materials, Uva Basketball Roster 2020-21, Metaphors In Just Walk On By Brent Staples, Shade Structure Design, Wladyslaw Szpilman,

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