Mineral Sillimanite-Based Hard Substrates for HTCC Applications

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Title:	Mineral Sillimanite-Based Hard Substrates for HTCC Applications
Authors:	INDUJA, I J VARMA, M R SEBASTIAN, M T
Keywords:	Sillimanite HTCC dielectric properties tape casting
Issue Date:	Oct-2018
Publisher:	The Minerals, Metals & Materials Society
Citation:	Journal of Electronic Materials, 47(10):6171–6176
Abstract:	Sillimanite is a naturally occurring mineral with an orthorhombic structure. A suitable concentration of tape casting slurry with a pseudoplastic nature has been formulated using sillimanite (Al2SiO5) (filler) and organic additives. The green tape has a tensile strength of 1.5 MPa. The Al2SiO5 (5 layers) hightemperature co-fired ceramic (HTCC) tape sintered at 1500 C shows a dielectric constant (er) of 4.59 with a loss tangent (tand) of 0.0008 at 5 GHz. The mineral has a coefficient of thermal expansion of 4.3 ppm/ C. The low cost Al2SiO5 tape from natural sources can be a suitable option for low er HTCC substrate applications.
URI:	http://10.10.100.66:8080/xmlui/handle/123456789/3350
Appears in Collections:	2018

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