Effect of Stress on Second Harmonic Generation in TeO2-based Glass Ceramics

Yukio MIYASHITA; Toshihiko MATSUZAKI; Yoshiharu MUTOH; Yoshihiro TAKAHASHI; Yasuhiko BENINO; Takayuki KOMATSU

doi:10.14852/jcersjsuppl.112.0.S1257.0

Journal of the Ceramic Society of Japan, Supplement 112-1, PacRim5 Special Issue

Session ID : 17

DOI https://doi.org/10.14852/jcersjsuppl.112.0.S1257.0

Conference information

Host: The Ceramic Society of Japan

Co-host: Iketani Science and Technology Foundation, International Ceramic Federation, Commemorative Organization for the Japan World Exposition '70, The American Ceramic Society, The Australasian Ceramic Society, The Chinese Ceramic Society, The Korean Ceramic Society, Joint Research Consortium of Synergy Ceramics/Fine Ceramics Research Association, Nanotechnology Researchers Network Center of Japan, The Special Coordination Funds for Promoting Science and Technology, Japan National Tourist Organization, Aichi Prefectural Government, CASIO SCIENCE PROMOTION FOUNDATION, DAIKO FOUNDATION, Nagoya Convention and Visitors Bureau, The Asahi Glass Foundation, The Kao Foundation For Arts And Sciences, The Murata Science Foundation, The Ogasawara Foundation for the Promotion of Science & Engineering, ASAHI GLASS CO., LTD. Research Center, CENTRAL GLASS CO., LTD., ELECTRIC GLASS INDUSTRY ASSOCIATION OF JAPAN (EGAJ), Hattori Company, Ltd., Hitachi Research Laboratory, Hitachi, Ltd., HOYA CORPORATION, INAX Corporation, ITOCHU CERATECH CORP., Japan Cement Association, KYOCERA Corporation, KYUSHU REFRACTORIES CO., LTD., MINO CERAMIC CO., LTD., Murata Manufacturing Co., Ltd., NGK INSULATORS LTD., NGK SPARK PLUG CO., LTD., NICHIAS Corporation, NIKKO COMPANY, Nippon Electric Glass Co., Ltd., Nippon Sheet Glass Co., Ltd., NORITAKE CO., LIMITED, Tokuyama Corporation, TOTO LTD.

Papers

Effect of Stress on Second Harmonic Generation in TeO₂-based Glass Ceramics

Yukio MIYASHITA, Toshihiko MATSUZAKI, Yoshiharu MUTOH, Yoshihiro TAKAHASHI, Yasuhiko BENINO, Takayuki KOMATSU

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Keywords: TeO₂ glass and glass ceramics, SHG (Second Harmonic Generation), Mechanical property, Fracture toughness, Residual stress, Appling compressive stress

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Abstract

TeO₂-based glass ceramics was prepared by crystallizing the glass. Strength and toughness of the glass ceramics were higher than those of the glass. Intrinsic fracture toughness of the glass ceramics could be evaluated by the SEPB (Single Edge Pre-cracked Beam) method, while fracture toughness evaluated by the IF (Indentation Fracture) method depended on indenting load. The glass did not show second harmonic generation (SHG) but the glass ceramic did. Intensity of SHG decreased with polishing the specimen surface and with decreasing the cooling rate during the crystallizing process. Residual stress on the specimen surface was measured by the indentation method. Effects of surface polishing and cooling rate on residual stress accorded with those on intensity of SHG. Applied compressive stress also affects on SHG. Therefore, distortion of crystal structure due to residual stress and applied compressive stress may take an important role on SHG.

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