Corrosion behavior of silicon nitride ceramics in aqueous solutions (part 1) - effects of testing condition and various corrosive solutions -

Akira Okada, Satoshi Iio, Tetsuo Asano, Akira Kokaji, Hideo Takahashi, Masahiro Yoshimura

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Corrosion test of gas-pressure sintered silicon nitride with the additions of yittria and alumina was carried out under various testing conditions. As a result compared with specimens sustained in 6N-H2SO4 and those placed at the bottom of glass containers, no significant differences were observed in weight and bending strength. Also, there was no distinctive observation in the test at 90°C and boiling sulfuric acid. Silicon nitride was found to be corroded more severely in H2SO4 and H3PO4 than NaOH and H2O. In addition, the test in boiling water resulted in strength degradation of the specimens, while weight change was not detected through corrosion. Relationship between bending strength and weight loss indicated that the rapid decrease of the strength has taken place at below 0.05mg/cm2 of weight loss.

Original languageEnglish
Pages (from-to)1223-1227
Number of pages5
JournalJournal of the Ceramic Society of Japan. International ed.
Volume99
Issue number12
Publication statusPublished - 1991 Dec 1

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Silicon nitride
Bending strength
Boiling liquids
Corrosion
Testing
Sulfuric acid
Containers
Alumina
Degradation
Glass
Gases
Water

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

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abstract = "Corrosion test of gas-pressure sintered silicon nitride with the additions of yittria and alumina was carried out under various testing conditions. As a result compared with specimens sustained in 6N-H2SO4 and those placed at the bottom of glass containers, no significant differences were observed in weight and bending strength. Also, there was no distinctive observation in the test at 90°C and boiling sulfuric acid. Silicon nitride was found to be corroded more severely in H2SO4 and H3PO4 than NaOH and H2O. In addition, the test in boiling water resulted in strength degradation of the specimens, while weight change was not detected through corrosion. Relationship between bending strength and weight loss indicated that the rapid decrease of the strength has taken place at below 0.05mg/cm2 of weight loss.",
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Corrosion behavior of silicon nitride ceramics in aqueous solutions (part 1) - effects of testing condition and various corrosive solutions -. / Okada, Akira; Iio, Satoshi; Asano, Tetsuo; Kokaji, Akira; Takahashi, Hideo; Yoshimura, Masahiro.

In: Journal of the Ceramic Society of Japan. International ed., Vol. 99, No. 12, 01.12.1991, p. 1223-1227.

Research output: Contribution to journalArticle

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AU - Okada, Akira

AU - Iio, Satoshi

AU - Asano, Tetsuo

AU - Kokaji, Akira

AU - Takahashi, Hideo

AU - Yoshimura, Masahiro

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