计算机信息技术检索实习报告.docx

计算机信息技术检索实习报告 计 算 机 信 息 检 索 实 习 报 告 （二） 姓名：刘洋 班级：050111卓越 学号：2022301157 一、检索课题：陶瓷复合材料的强度探讨。 二、选用的数据库：Ei（The Engineering Index：美国工程索引 数据库）。 三、确定检索词：ceramics（陶瓷），composite（复合材料），strength （强度）。 四、构建检索式：ceramics and composite and strength 五、检索过程： 1、初级检索方式 1.1、通过西工大图书馆的外文数据库进入Ei Compendex。 1.2、选择Quick Search。（默认条件下为Quick Search）。 1.3、检索字段选择“All fields”，输入检索关键 词“ceramics ”，“composite”，“strength”。三个检索 关键词之间的组配关系选择“and”。在SORT BY下选择 Autostemming off。 1.4、点击“search”。可以望见“查询结果：3452 articles found in Compendex for 1969-2022”。 1.5、从查询结果之中找寻符合题目要求的文献。 2、高级检索方式 2.1、通过西工大图书馆的外文数据库进入Ei Compendex。 2.2、选择“Expert Search”。 2.3、在“search for”一栏中输入ceramics and composite and strength。 2.4、点击“search”，可以望见“查询结果：3452 articles found in Compendex for 1969-2022”。 2.5、从检索结果之中找寻符合题目要求的文献。 六、检索结果： 文献一： 题名： Crack-healing behavior and bending strength of Si3N4/SiC composite ceramics by SiO2 colloidal. 作者： 1.Nam, Ki Woo; 2.Kim, Mi Kyung; 3.Park, Sung Won; 4.Ahn, Seok Hwan; 5.Kim, Jong Soon. 来源：Ei（The Engineering Index：美国工程索引数据库）。主题词：Silicon compounds 文摘：Si3N4/SiC composite ceramics were sintered in order to investigate their bending strength behavior after crack-healing.Y2O3 and TiO2 powder was added as sintering additives to enhance it's sintering property.A three-point bending specimen was cut out from sintered plates.About 100 m semi-circular surface cracks were made on the center of the tension surface of the three-point bending specimen using Vickers indenter.After the cracked specimen with SiO2 colloidal coating healed from 500 to 1300 °C for 1 h in air, the bending strength behavior was carried out systematically at room temperature.Si3N4/SiC ceramics using additive powder (Y2O3 + TiO2) were superior to that of additive powder Y2O3.The additive powder TiO2 exerted influence at growth of Si3N4.The optimum crack-healing conditions coated SiO2 colloidal were 1000 and 1300 °C at Si3N4/SiC using additive powder (Y2O3 + TiO2) and Y2O3, respectively. 文献二： 题名： Characterization of high temperature strength of Si3N 4 composite ceramics according to the amount of SiO2 nano colloidal added. 作者： 1.Nam,Ki Woo 2.Lee,Kun Chan 来源：Ei（The Engineering Index：美国工程索引数据库）。 主题词：Bending strength 文摘：This study analyzed the characterization of high temperature strength of Si3N4 composite ceramics additive based on variations in the amount of nano colloidal SiO2 added.Semi-elliptical cracks about 100 m length were obtained from a Vickers indenter using a load of 24.5 N.The results showed that the heat-treated smooth specimens with SiO2 nano colloidal coating exhibited the highest bending strength at 0.0 wt% SiO2 nano colloidal added, which is amounted to a 187% increase over that of smooth specimen.Limiting temperature for bending strength of crack-healed zone for bending strength was about 1273 K.However, the bending strength of SSTS-3 and SSTS-4 was considerably increased while that of SSTS-1 and SSTS-2 was decreased at a temperature of 1,573K. 文献三： 题名： Strength recovery behavior of machined Al2O3/SiC nano-composite ceramics by crack-healing 作者： 1.Osada, Toshio; 2.Nakao, Wataru;3.Takahashi, Koji;4.Ando, Kotoji; 5.Saito, Shinji. 来源：Ei（The Engineering Index：美国工程索引数据库）。 主题词：Ceramic matrix composites 文摘：The machined alumina/15 vol.% SiC nano-composites having a semicircular groove were conducted to various heat treatments.The change of the local fracture stre at the bottom of semicircular groove has been investigated as a function of crack-healing temperature and time.By heating at 1400 °C at 1 h, the machined specimen was fractured not from the cracks introduced by the hard machining but from the other region.Thus, it was concluded that the machining cracks were completely healed by the above heat treatment.Moreover, The strengh at room temperature and elevated temperature ( 计算机信息技术检索实习报告 III计算机检索实习报告 计算机信息技术专业技术报告 计算机信息检索试验报告 计算机信息检索课程小结 计算机信息管理技术实习报告 计算机信息技术教学探讨（整理） 计算机信息技术教学安排 相识计算机教案小学信息技术 信息资源与计算机信息检索 本文来源：网络收集与整理，如有侵权，请联系作者删除，谢谢！第7页 共7页第 7 页 共 7 页第 7 页 共 7 页第 7 页 共 7 页第 7 页 共 7 页第 7 页 共 7 页第 7 页 共 7 页第 7 页 共 7 页第 7 页 共 7 页第 7 页 共 7 页第 7 页 共 7 页