アダチ　タケシ   Takeshi Adachi   足立　岳志    所属   石巻専修大学  理工学部    職種   教授
言語種別	英語
発行・発表の年月	1993/06/01
形態種別	研究論文
査読	査読あり
標題	Visco-elasticity in Alumina Ceramics at Room Temperature
執筆形態	共著
掲載誌名	Journal of Materials Science
掲載区分	国外
出版社・発行元	springer
巻・号・頁	28(12),pp.3347-3352
総ページ数	6
担当区分	責任著者
国際共著	国際共著
著者・共著者	◎A.T. Yokobori,Jr., C.Y.Jian, T.Adachi and T.Yokobori
概要	The decrease in the fracture strength of alumina ceramics at room temprerature has usually been assumed to be caused by the effect of stress corrosion. However, at high temperatures, a viscous deformation will occur due to a glass-like phase which exists in the grain boundary. A study of the relation of the fracture strength of an alumina ceramics smooth specimen at room temperature to the visco-elastic property was performed. Mechanical tests and visco-elastic analysis, has shown that the fracture strength of this kind is controlled by the visco-elasticity.