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High thermal shock resistant aluminum oxide ceramic substrate for LED and manufacturing method of high thermal shock resistant aluminum oxide ceramic substrate
A high thermal shock resistant aluminum oxide ceramic substrate for an LED belongs to the field of high-performance special ceramic preparation. According to the substrate, a proper amount of kyanite is introduced in a normal component aluminium oxide 96 ceramic in an aluminum oxide ceramic substrate formula; the kyanite has a self-repairing function of secondary mullitization and a wetting effect of SiO2 on a particle surface and improves the thermal shock performance of the substrate; the substrate is manufactured by aqueous gel-casting with a synergistic effect of various polysaccharides consisting of gellan gum and gelatin (or xanthan gum and locust bean gum); and various aqueous gel-casting techniques with technological operability during a manufacturing process are satisfied by utilizing the mechanisms that the polysaccharides change with temperature and divalent or monovalent cation induces solidification, and the anisotropy of the substrate is controlled so as to realize a green and environment-friendly technique.
High thermal shock resistant aluminum oxide ceramic substrate for LED and manufacturing method of high thermal shock resistant aluminum oxide ceramic substrate
A high thermal shock resistant aluminum oxide ceramic substrate for an LED belongs to the field of high-performance special ceramic preparation. According to the substrate, a proper amount of kyanite is introduced in a normal component aluminium oxide 96 ceramic in an aluminum oxide ceramic substrate formula; the kyanite has a self-repairing function of secondary mullitization and a wetting effect of SiO2 on a particle surface and improves the thermal shock performance of the substrate; the substrate is manufactured by aqueous gel-casting with a synergistic effect of various polysaccharides consisting of gellan gum and gelatin (or xanthan gum and locust bean gum); and various aqueous gel-casting techniques with technological operability during a manufacturing process are satisfied by utilizing the mechanisms that the polysaccharides change with temperature and divalent or monovalent cation induces solidification, and the anisotropy of the substrate is controlled so as to realize a green and environment-friendly technique.
High thermal shock resistant aluminum oxide ceramic substrate for LED and manufacturing method of high thermal shock resistant aluminum oxide ceramic substrate
WANG LIPING (Autor:in)
06.05.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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