@article { ISI:000355656000013,
	title = {Low-temperature sintering and microwave dielectric properties of Zn2SiO4 ceramic added with crystalline zinc borate},
	journal = {Journal of Electronic Materials},
	volume = {44},
	number = {7},
	year = {2015},
	month = {JUL},
	pages = {2312-2320},
	publisher = {SPRINGER},
	address = {233 SPRING ST, NEW YORK, NY 10013 USA},
	abstract = {<p>The physical and dielectric properties of composites of known microwave materials, Zn2SiO4 and Zn3B2O6, prepared by solid-state reaction, were investigated with the purpose of developing a low-loss dielectric material for low-temperature co-fired ceramic applications. An off-stoichiometric phase of Zn2SiO4 with extra SiO2 was used to avoid the occurrence of unreacted ZnO. During sintering, zinc borate was found to partially react with residual SiO2 to form Zn2SiO4. The residual zinc borate was converted to a boron-rich glassy phase which helped to reduce the sintering temperature of the composite. Good relative sintering density (\&gt; 90\%) at temperatures below the melting temperature of zinc borate is indicative of a sintering mechanism of diffusion-based mass transfer. Composites containing 15 wt.\% zinc borate, 2.5 wt.\% lithium carbonate and 20 wt.\% zinc borate in zinc silicate had dielectric constants of 6.8 and 6.1, quality factors (Qxf) of 48,800 and 94,300 GHz when sintered at 900A degrees C and 950A degrees C, respectively. These quality factor results are close to the best values reported for zinc silicate at these sintering temperatures.</p>},
	keywords = {dielectric constant, LTCC, quality factor, sintering density, zinc borate, zinc silicate},
	issn = {0361-5235},
	doi = {10.1007/s11664-015-3762-0},
	author = {Chaware, Varsha and Deshmukh, Ravindra and Sarode, Chetan and Gokhale, Suresh and Phatak, Girish}
}
@article {43575,
	title = {Laser shielding and thermal ablation characteristics of resorcinol formaldehyde/boronnitride composites for thermal protection systems},
	journal = {Industrial \& Engineering Chemistry Research},
	volume = {55},
	year = {2016},
	month = {OCT},
	pages = {10645-10655},
	abstract = {Resorcinol formaldehyde (RF) composites were modified by incorporating different weight ratios of hexagonal boron nitride (h-BN) through a novel in situ polymerization technique. Temperature modulated SAXS was used to understand the changes in polymer network due to h-BN addition. The ablation performance of RF BN composites was evaluated by pulsed laser and oxyacetylene torch tests. Linear ablation resistance under oxyacetylene conditions improved by 18\%. Laser ablation resistance increased by 44\%. The reasons for improved ablation resistance for RF BN composites were studied using XRD, FTIR, and XPS methods which indicated that h-BN undergoes phase transformation at higher temperatures and also displays typical floral assimilation leading to significant energy consumption. This results in improved ablation resistance. These findings could lead to fabrication of RF BN based thermal protection systems (TPS) having better protection capabilities.},
	doi = {10.1021/acs.iecr.6b01443},
	author = {Daniel, Alex and Badhe, Yutika and Srikanth, Ivaturi and Gokhale, Suresh and Balasubramanian, Kandasubramanian}
}
