@techreport{oai:jaxa.repo.nii.ac.jp:00045135,
 author = {藤沢, 良昭 and 松末, 勝利 and 高原, 北雄 and FUJISAWA, Yoshiaki and MATSUSUE, Katsutoshi and TAKAHARA, Kitao},
 month = {Sep},
 note = {常圧焼結窒化けい素の強度試験の一環としてねじり強さ試験を行った。試験片の寸法に合わせて低トルクを計測可能で,かつ高温試験もできるねじり試験機を製作し,これを用いて室温から1400度Cまでのねじり破壊試験を行い,高温でのねじり強さ特性及び破壊機構を調べた。, Torsional strength tests of pressureless-sintered silicon nitride were carried out at temperatures ranging from room temperature to 1400C in air. The torsional strength rapidly decreased at temperatures above 800C ; at 1400C it was 15 percent of that at room temperature where a value of 349 MPa was found. Observations of the fracture mode and of the crack propagation on the fracture surfaces were made and discussed., 資料番号: NALTR0877000, レポート番号: NAL TR-877},
 title = {常圧焼結窒化けい素のねじり強さ},
 year = {1985}
}