【摘 要】
：
The mechanical properties of PbWO4 (PWO) crystals grown by the vertical Bridgman method are systematically investigated using the microindentation technique. In
【机 构】
：
Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050“,”Graduate Schooi of th
论文部分内容阅读
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.
其他文献
A thermodynamic cavitation model is developed to simulate the cavitating water flow in a wide temperature range. The thermal effect on bubble growth during cavi
The adsorption and reaction of CO on SrTiO3 (100) surface with and without surface oxygen vacancy are investigated by the first-principles calculation based on
By introducing inteal degree, the deformation of hexagonal noncentrosymmetric crystal sheet can be described by the revised Cauchy-Bo rule based on atomic poten
识字是阅读和写作的基础,也是低年级语文教学的重点.新课程标准中,小学一、二年级语文教学一个重要的课程目标就是让孩子们乐于识字、学会阅读.
The Lagrangian structure function’s scaling exponents and intermittency of three-dimensional incompressible turbulent channel flow are investigated by using di
从高效课堂上来讲,小组学习是最基本的学习形式,是最基本的学习单元.学习小组建立,划分,综合性培训以及课堂评价操作办法是高效课堂小组建设的关键.
The static equation of state (EOS) of tantalum (Ta) is determined by in situ energy-dispersive synchrotron powder x-ray diffraction in a diamond anvil cell (DAC
本文从累与乐两方面阐述了班主任工作的特殊性,用身边的事例和当前班主任现状分析班主任工作的累,更倾向于挖掘其中的乐,摈弃烦恼,积累乐趣,班主任才能乐在其中.
High pressure behavior of sodium titanate nanotubes (Na2Ti2O5) is investigated by Raman spectroscopy in a diamond anvil cell (DAC) at room temperature. The two
The Bond counting rule is proved to be an important and effective criterion for searching low-energy metastable structures for teary boron carbon nitrogen (B-C-