2A25 マイクロ天秤を用いた窒化ケイ素ウィスカーの引張強度の測定
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The tensile strength of three kinds of Si_3N_4 whiskers : (1) α-Si_3N_4 prepared by reacting amorphous Si_3N_4 and TiO_2 in N_2,(2) α-Si_3N_4 prepared by carbothermal reduction of SiO in NH_3-N_2 and (3) composite whiskers consisting of α-Si_3N_4 core surrounded with amorphous Si_3N_4,prepared by the same carbothermal reduction, were measured by an original method using a microbalance. The tensile strength of the Si_3N_4 whiskers increased with the decrease in diameter of the whiskers. Specimens (1) showed a maximum strength of 59GPa at a diameter of 0.34μm.
- 1997-10-02
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