排序方式: 共有17条查询结果,搜索用时 15 毫秒
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为表征Pb(Zr_(0.52)Ti_(0.48))O_3(PZT)薄膜的横向压电性能,以纯力场鼓包测试模型和铁电薄膜材料压电方程为基础,推导了PZT铁电薄膜的力电耦合鼓包本构模型。采用溶胶-凝胶法制备了PZT铁电薄膜,并通过化学腐蚀法获得PZT薄膜鼓包样品。在外加电压为0~14V的条件下进行鼓包测试。结果表明,在纯力场作用下,PZT薄膜的弹性模量和残余应力分别为91.9GPa和36.2MPa;随着电压从2V变化到14V,PZT薄膜的横向压电系数d31从-28.9pm/V变化到-45.8pm/V。本工作所发展的力电耦合鼓包测试技术及力电耦合鼓包本构模型为评价铁电薄膜材料的横向压电性能提供了一种有效的分析方法。 相似文献
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毛卫国 《CAD/CAM与制造业信息化》1999,(7)
笔者于1994年年底在意大利初次认识丁劝Is软件,为其强大的CAM功能所吸引,并于19974初参与弓】进了三套TabisV3.0软件。经过两年多对该软件的使用,笔者认为与其他CAD/CAM软件相比,易学易用及全鼠标化操作是Tebis软件最大的特点之一... 相似文献
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毛卫国闫小星吴燕徐伟 《家具》2013,(4):26-29
在木器漆应用领域,UV涂料与传统涂料相比以明显优势,逐渐成为当下主流,同时也引领着未来的发展。但UV也有其缺陷,笔者着重于利用CaCO_3对木地板UV涂料进行改性,并对其力学性能和光学性能进行测试研究,旨在寻找一种具有较高性能的木质地板改性UV涂料。 相似文献
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In order to enhance the fracture toughness of mullite, three-dimensional braided carbon fiber reinforced mullite(C/mullite) composites were prepared using the Al_2O_3-SiO_2 sol with a high solid content as raw material. Mullitization behavior of the sol was characterized. Then, the microstructure, mechanical properties and oxidation resistance of C/mullite composites were investigated. It is found that the SiO_2-rich mullite with desirable sintering shrinkage can be synthesized at 1 300 ℃ from the sol with an Al_2O_3/SiO_2 mass ratio of 1:1. The C/mullite composites with a total porosity of 21.5% were fabricated by repeating 18 cycles of vacuum impregnation-drying-heat treatment, showing a flexural strength of 234.5 MPa and a fracture toughness of 13.1 MPa·m1/2. Since carbon fibers were protected by compact matrix, the C/mullite composites show favorable oxidation resistance during 1 200 ℃-1 600 ℃ even if an open porosity of 10.3% was detected. 相似文献