Nā hiʻohiʻona kumu o nā fiber ceramic refractory

Nā hiʻohiʻona kumu o nā fiber ceramic refractory

ʻO nā fiber ceramic refractory kahi ʻano mea porous irregular me ka paʻakikī micro spatial structure. ʻO ka hoʻopaʻa ʻana o nā fibers he maʻamau a me ka ʻino, a ke alakaʻi nei kēia ʻano geometric i ka ʻokoʻa o ko lākou mau waiwai kino.

ʻūhā-ceramic-fibers

ʻO ka nui o ka fiber
ʻO nā fibers seramika refractory i hana ʻia e ke ʻano hoʻoheheʻe aniani, hiki ke manaʻo ʻia ka mānoanoa o nā fibers e like me ka nui maoli. Ke hoʻohālikelike ʻia ka mahana he 1260 ℃, ʻo ka nui o nā fibers refractory he 2.5-2.6g / cm3, a i ka wā o ka hoʻokaʻawale ʻana he 1400 ℃, ʻo ka nui o nā fiber ceramic refractory he 2.8g / cm3. He ʻokoʻa koʻikoʻi maoli ka nui o ka polycrystalline fibers i hana ʻia me ka alumini oxide ma muli o ka loaʻa ʻana o nā micro pores ma waena o nā ʻāpana microcrystalline i loko o nā fibers.
Anawaena fiber
ʻO ke anawaena fiber onā fiber ceramic refractoryhana ʻia e ke ʻano hoʻoheheʻe hoʻoheheʻe hoʻoheheʻe kiʻekiʻe mai 2.5 a 3.5 μm. ʻO ke anawaena fiber o nā fiber ceramic refractory i hana ʻia e ke ʻano wili wikiwiki kiʻekiʻe he 3-5 μm. ʻAʻole mau ke anawaena o nā fibers refractory i loko o kēia pae, a ʻo ka hapa nui o nā fibers aia ma waena o 1-8 μm. Hoʻopili pololei ke anawaena o nā fiber ceramic refractory i ka ikaika a me ka conductivity thermal o nā huahana fiber refractory. Ke nui ka anawaena o ka fiber, paʻakikī nā huahana fiber refractory i ka wā e hoʻopā ai, akā ʻo ka hoʻonui ʻana i ka ikaika e hoʻonui i ka conductivity thermal. I loko o nā huahana fiber refractory, ʻo ka conductivity thermal a me ka ikaika o nā fibers ke kumu like ʻole. ʻO ka awelika anawaena o ka alumina polycrystalline ma ke ʻano he 3 μm. ʻO ke anawaena o ka hapa nui o nā fiber ceramic refractory ma waena o 1-8 μ.


Ka manawa hoʻouna: Mei-04-2023

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