Mechanical Properties and Anisotropy in PbWO4 Single Crystal
WANG Hong1,2,3, ZHANG Zhi-Jun1,3, ZHAO Jing-Tai1,3, XU Jia-Yue1,4, HU Guan-Qin1,3, LI Pei-Jun1
1Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 2000502Graduate School of the Chinese Academy of Sciences, Beijing 1000493Key Laboratory of Transparent and Opto-Functional Inorganic Materials of Chinese Academy of Sciences, Shanghai Institute of Ceramics, Shanghai 2000504School of Materials Science and Engineering, Shanghai Institute ofTechnology, Shanghai 200235
Mechanical Properties and Anisotropy in PbWO4 Single Crystal
WANG Hong1,2,3, ZHANG Zhi-Jun1,3, ZHAO Jing-Tai1,3, XU Jia-Yue1,4, HU Guan-Qin1,3, LI Pei-Jun1
1Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 2000502Graduate School of the Chinese Academy of Sciences, Beijing 1000493Key Laboratory of Transparent and Opto-Functional Inorganic Materials of Chinese Academy of Sciences, Shanghai Institute of Ceramics, Shanghai 2000504School of Materials Science and Engineering, Shanghai Institute ofTechnology, Shanghai 200235
摘要The mechanical properties of PbWO4 (PWO) crystals grown by the vertical Bridgman method are systematically investigated using the microindentation technique. In the present work, the Vickers microhardness Hν, fracture toughness Kc, yield strength σy and friability index Bi of PbWO4 crystals are measured. The Vickers microhardness Hν on the (100) wafer is about 140 MPa, which means that PWO is a little ``soft'' scintillator. The anisotropy of mechanical properties is also investigated under a steady load of 0.5 kg. The (100) wafer of the crystal exhibits combined mechanical properties more excellent than those of (111) and (001) wafers, and the values of Kc, σy, and Bi are 0.538 MPa・m1/2, 51.11 kg/mm2 and 284.96 νm-1/2, respectively.
The mechanical properties of PbWO4 (PWO) crystals grown by the vertical Bridgman method are systematically investigated using the microindentation technique. In the present work, the Vickers microhardness Hν, fracture toughness Kc, yield strength σy and friability index Bi of PbWO4 crystals are measured. The Vickers microhardness Hν on the (100) wafer is about 140 MPa, which means that PWO is a little ``soft'' scintillator. The anisotropy of mechanical properties is also investigated under a steady load of 0.5 kg. The (100) wafer of the crystal exhibits combined mechanical properties more excellent than those of (111) and (001) wafers, and the values of Kc, σy, and Bi are 0.538 MPa・m1/2, 51.11 kg/mm2 and 284.96 νm-1/2, respectively.
WANG Hong;;ZHANG Zhi-Jun;ZHAO Jing-Tai;XU Jia-Yue;HU Guan-Qin;LI Pei-Jun. Mechanical Properties and Anisotropy in PbWO4 Single Crystal[J]. 中国物理快报, 2010, 27(2): 26101-026101.
WANG Hong, , ZHANG Zhi-Jun, ZHAO Jing-Tai, XU Jia-Yue, HU Guan-Qin, LI Pei-Jun. Mechanical Properties and Anisotropy in PbWO4 Single Crystal. Chin. Phys. Lett., 2010, 27(2): 26101-026101.
[1] Korzhik M V 1996 Proc. Int. Conference on Inorganic Scintillators and their Applications (Netherlands: Delft) p 241 [2] Ishii M, Harada K and Kobayashi M 1996 Nucl. Instrum. Methods Phys. Res. A 203 376 [3] Ponton C B and Rawling R D 1989 Br. Ceram. Trans. J. 88 83 [4] Yang P Z, Liao J Y and Shen B F 2002 J. Cryst. Growth 589 236 [5] Qin K, Yang L M and Hu S S 2008 Chin. Phys. Lett. 25 2581 [6] Li W F, Feng X Q and Duan C G 2006 J. Phys.: Condens. Matter 6065 18 [7] Sargent P M 1986 Microindentation Techniques in Materials Science and Engineering ed Blau P J (Philadelphia, PA: American Society for Metals) p 160 [8] Luyckx S, Demanet C M and Shrivastava S 1999 J. Mater. Sci. Lett. 705 18 [9] Dhar P R, Bamzai K and Kotru P N 1997 Cryst. Res. Technol. 537 32 [10] Pandya J R, Bhagia L J and Shah Bull A J 1983 Mater. Sci. 79 5 [11] Sahin O, 2007 Chin. Phys. Lett. 24 3206 [12] Westbrook J, Shaw J and Conrad H 1973 The Science of Hardness Testing and Its Research Applications (Materials Park, OH: ASM) p 3 [13] Daniels F W and Dunn C G 1949 Trans. ASTM 419 41 [14] Stevenson M E, Kaji M and Bradt R C 2002 J. Eur. Ceram. Soc. 1137 22 [15] Moreau J M 1996 J. Alloys Compd. 238 46 [16] Xiong L T, Cao M S and Hou Z L 2009 Chin. Phys. Lett. 26 076201 [17] William D N 1999 Introduction to Mineralogy (Oxford: Oxford University) p 77 [18] Gupta V, Bamzai K K and Kotru P N 2005 Mater. Chem. Phys. 64 89
2010, Vol. 27 
