Electronic Resource
s.l. ; Stafa-Zurich, Switzerland
Advances in science and technology
Vol. 50 (Oct. 2006), p. 17-23
ISSN:
1662-0356
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Natural Sciences in General
,
Technology
Notes:
The oxygen free SiC fiber (Hi-Nicalon) has been commercially produced by an electronbeam curing process. And then the SiC fiber (Hi-Nicalon Type S) having stoichiometric SiCcomposition and high crystallinity has been developed.Hi-Nicalon fiber has higher elastic modulus and thermal stability than Nicalon fiber. The Type Sfiber has the highest elastic modulus and thermal stability and excellent creep resistance in threetypes of Nicalon fibers.Recently,Type S fibers as industrial products have been developed and put on the market.The Type S fibers have a high tensile strength of 2.8 GPa, a high elastic modulus of 390 GPa.Against thermal exposure, Type S retains a tensile strength of 2.3 GPa and hardly changes its elasticmodulus even at 1873K. Moreover, Type S has outstanding creep resistance. Type S shows higherstress relaxation ratio than many other ceramic fibers after thermal exposure over 1673K.Now, Hi-Nicalon Type S fiber/BN/SiC composites are being developed as the components of gasturbine for aerospace and land based power generation such as shrouds and combustors.Type Hi-Nicalon S can be supplied about 30 kg per a month at present
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/42/transtech_doi~10.4028%252Fwww.scientific.net%252FAST.50.17.pdf
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