Properties of Y&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt;-Al&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt;-SiO&lt;sub&gt;2&lt;/sub&gt; Glasses as a Model System of Grain Boundary Phase of Si&lt;sub&gt;3&lt;/sub&gt;N&lt;sub&gt;4&lt;/sub&gt; Ceramics (Part 2)

Kōhei Oda; Tetsuo Yoshio

doi:10.2109/jcersj.99.1150

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Properties of Y2O3-Al2O3-SiO2 Glasses as a Model System of Grain Boundary Phase of Si3N4 Ceramics (Part 2)

Kōhei Oda Tetsuo Yoshio

Year: 1991 Journal: Journal of the Ceramic Society of Japan Vol: 99 (1155)Pages: 1150-1152 Publisher: Ceramic Society of Japan

DOI: 10.2109/jcersj.99.1150

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Abstract

The leaching behavior of Y2O3-Al2O3-SiO2 glasses was studied in connection with the hydrothermal corrosion of Si3N4-Y2O3/Al2O3 ceramics. Leaching tests were conducted with the glass blocks under hydrothermal conditions at 300°C for 1 to 10 days. It was found that the weight loss of the glasses is less than 0.8mg/cm2 after 10 days and the durability of the glasses is higher than that of SiO2 glass, Corning-1723 glass and Si3N4-Y2O3/Al2O3 ceramics. It was considered that the higher durability of the glass under hydrothermal conditions is due to the lower leach rates of Y2O3 and Al2O3.

Keywords:

Hydrothermal circulation Leaching (pedology) Materials science Durability Corrosion Mineralogy Ceramic Nuclear chemistry Metallurgy Chemical engineering Chemistry Composite material Geology

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Recycling and utilization of industrial and municipal waste in materials production

Physical Sciences → Engineering → Building and Construction

Advanced ceramic materials synthesis

Physical Sciences → Materials Science → Ceramics and Composites

Glass properties and applications

Physical Sciences → Materials Science → Ceramics and Composites

Properties of Y<sub>2</sub>O<sub>3</sub>-Al<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub> Glasses as a Model System of Grain Boundary Phase of Si<sub>3</sub>N<sub>4</sub> Ceramics (Part 2)

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