Effects of starch addition amount on microstructure, mechanical properties and room temperature thermal conductivity of porous Y2SiO5 ceramics. Issue 2 (1st February 2016)

• Record Type: Journal Article
• Authors: He, Rujie; Qu, Zhaoliang; Cheng, Xiangmeng
• Is Part Of: Ceramics international. Volume 42:Issue 2:Part A(2016)
• Page Start: 2257
• Page End: 2262
• Publication Date: 2016-02-01
• Subjects: C. Thermal conductivity -- Porous ceramics -- Y2SiO5 -- Microstructure -- Compressive strength; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2015.10.019
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Y2 SiO5 ceramics were prepared by dry pressing and pressureless sintering using different amount of starch addition as pore-forming agent. With the starch addition amount increases from 10 to 40 wt%, the relative density for porous Y2 SiO5 ceramics ranges from 70.4% to 38.3%, the mean pore size ranges from 1.02 to 2.01 μm, the compressive strength ranges from 28.25 to 1.43 MPa, and the room temperature thermal conductivities ranges from 0.81 to 0.18 W/m K. The relatively high strength and low thermal conductivity of porous Y2 SiO5 ceramics are believed to be useful for future high-temperature insulating applications.