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XRD的相关文献在1989年到2022年内共计2245篇,主要集中在化学、化学工业、金属学与金属工艺 等领域,其中期刊论文1993篇、会议论文76篇、专利文献176篇;相关期刊738种,包括材料导报、功能材料、燃料化学学报等; 相关会议62种,包括中国工程热物理学会2010年燃烧学学术会议、湖北省暨武汉腐蚀与防护学会2010年学术交流会、2010年全国阻燃学术会议等;XRD的相关文献由7084位作者贡献,包括罗孟飞、等、祖小涛等。

XRD—发文量

期刊论文>

论文:1993 占比:88.78%

会议论文>

论文:76 占比:3.39%

专利文献>

论文:176 占比:7.84%

总计:2245篇

XRD—发文趋势图

XRD

-研究学者

  • 罗孟飞
  • 祖小涛
  • 胡天斗
  • 方萍
  • 何迈
  • 刘颖
  • 欧阳健明
  • 许并社
  • 韦世强
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 漆才文; 尹艳山; 吴紫华; 陶建航; 王涛; 成珊; 刘亮; 陈冬林
    • 摘要: 使用马弗炉在温度为300°C~1000°C条件下制备煤灰,利用傅立叶变换红外光谱(FTIR),X射线衍射(XRD)和X射线光电子能谱分析(XPS)三种技术研究了湘西煤燃烧过程中矿物质的演化规律。FTIR和XRD结果表明:湘西煤中主要含有高岭石、石英、锐钛矿、伊利石、黄铁矿和石膏等矿物;高岭石的Si—O伸缩振动峰(1031 cm^(-1))在温度为700°C时移动到1045 cm^(-1),表明高岭石转化为偏高岭石,当温度为900°C时再次移动到1087 cm^(-1),表明高岭石进一步转化为石英;高岭石的Al—O—Si弯曲振动峰(537 cm^(-1))在900°C时移动到559 cm^(-1),表明高岭石转化为莫来石;锐钛矿在500°C时热转化形成金红石;伊利石在900°C时热转化形成石英。XPS结果表明,湘西煤的Si2p和Al2p结合能随燃烧温度升高先增大后减小,当温度升高到500°C时,非桥氧硅结构增加,部分铝氧八面体转化为铝氧四面体,当温度升高到900°C时,桥氧硅和铝氧八面体结构增加。
    • Katrapally Vijaya Kumar
    • 摘要: The gadolinium substituted nickel-zinc ferrite nanoparticles of the composition, Ni0.5Zn0.5Gd0.05Fe1.95O4 were prepared using sol-gel method. In order to study the effect of calcination temperature on the optical parameters, the prepared powder was divided into five parts. The first part was taken as the as-prepared sample and the remaining four parts were calcinated at different temperatures, 600°C, 700°C, 800°C & 900°C. The X-ray diffraction patterns revealed the formation of cubic spinel structure with single phase and Fd3m space group. The crystallite size was increased from 11.75 nm to 18.13 nm as the calcination temperature increased from 600 to 900°C whereas as-prepared sample exhibited 17.61 nm. The dislocation density was decreased from 7.243 × 10-3 to 3.042 × 10-3 nm-2 as the calcination temperature increased from 600°C to 900°C. The micro strain was decreased from 10 × 10-4 to 6.452 × 10-4 as the calcination temperature increased from 600°C to 900°C. The characteristic absorbance peaks were obtained at 255.2 nm for the ferrite nanoparticles of as-prepared and calcinated at 600°C and 800°C whereas it was obtained as 252.8 nm for the sample calcinated at 700°C and there was no such characteristic peak in UV-visible range for the sample calcinated at 900°C; it is expected in the below 200 nm region. The optical energy gap was calculated using Kubelka-Munk equation based on Tauc’s plot and found in the range 4.100 eV to 5.389 eV. The lowest energy gap of 4.100 eV exhibited by the sample calcinated at 700°C and the highest energy gap of 5.389 eV by the sample calcinated at 900°C. It is concluded that the tunable band gaps can be obtained with varying calcination temperature.
    • NIU Penghui; SHAN Xuanlong; REN Xianjun; YI Jian; LIU Chaoyang; XING Jian
    • 摘要: In order to study the microscopic pore characteristics of andesite reservoir and the effect of mineral content on the andesite pore,this study takes the andesite of the Huoshiling Formation in Longfengshan of Changling fault depression,Songliao Basin as a subject.The andesite reservoir space was discerned through the observation of cores and casting thin sections.Besides,the pore size distribution of andesites and their mineral contents were quantitatively characterized by high-pressure mercury injection,nitrogen adsorption and XRD,respectively.The results show that:(1)There are various types of reservoir space in andesites,including vesicles,amygdule,intergranular pores,matrix dissolution pores and dissolution pores of amygdala,and three types of fractures including dissolution,structural and explosion fractures.(2)The pore size distribution of andesite is complex.The main pore size of andesite is mid-pore(10-20 nm)with some large-pores(>50 nm).Mid-pore and large-pore provide the main specific surface area,which are the main space for gas storage.(3)The andesite reservoir space in the study area is mainly controlled by dissolution,as supported by the relationship between the change of mineral content and porosity evolution.The porosity of andesites decreases with the increase of quartz and chlorite content,but increases with the increase of soluble mineral,e.g.,feldspar content.
    • 王明; 潘清; 李晓宇; 陈智群; 栾洁玉; 高朗华
    • 摘要: 为了快速检测HMX的晶型纯度,采用X射线粉末衍射(XRD)技术结合化学计量学偏最小二乘法,建立了HMX晶型纯度定量计算模型及晶型纯度检测方法,并讨论了建模样品的设计及模型的优化过程。结果表明:模型交互验证相关系数(R^(2))为0.9753,交互验证均方根误差(RMSECV)为0.916%,外部验证均方根误差(RMSEP)为0.552%,该模型具有较高的预测精度和准确度。研究表明该方法可用于HMX产品的晶型纯度测定。
    • 袁宇杰; 杨英; 储明; 王吉龙; 吴亮; 周雨桐; 张田田
    • 摘要: 采用巢湖自然水体沉积物对Cu^(2+)和Pb^(2+)吸附研究,初步研究了投加量、温度、时间、pH值等方面对其吸附结果的影响,在吸附实验中,拟二级动力模型优于拟一级动力学模型,Pb^(2+)和Cu^(2+)在缓流水体沉积物上的吸附行为更适合用Langmuir吸附等温模型来描述。红外光谱(FTIR)显示缓流水体沉积物中存在羟基、氨基、烷基、含氧基团等,这些基团对Pb^(2+)和Cu^(2+)的去除起了关键性的作用;XRD显示缓流水体沉积物表面的物质为SiO_(2)、CaCO_(3)。
    • 杨翔宁; 樊伟杰; 张勇; 宋宇航; 管宇; 张泰峰; 杨文飞
    • 摘要: 目的加强对7B04铝合金和TC16钛合金之间电偶腐蚀规律的认识,为特定海洋大气环境下服役的飞机在腐蚀防护方面提供指导。方法在模拟海洋大气环境下,对用钛合金铆钉铆接的7B04铝–7B04铝搭接件和极化试件进行10周期加速腐蚀试验,通过PARSTAT 4000电化学工作站测量2种合金加速腐蚀0、10周期后的极化曲线,并以测得的电化学参数为边界条件,利用COMSOL对搭接件进行数值模拟仿真,从而与试验结果进行对比分析;通过疲劳试验得到搭接件加速腐蚀4、6、8、10周期后的疲劳寿命;利用光学显微镜观察腐蚀微观形貌并进行疲劳断口附近的腐蚀坑深度测量;借助X射线衍射仪分析铝合金的腐蚀产物成分。结果在加速腐蚀0周期和10周期后,铝合金的自腐蚀电位和自腐蚀电流密度分别为−802 mV和−872 mV,2.357×10^(−7) A/cm^(2)和1.477×10^(−6) A/cm^(2),钛合金则分别为−313 mV和−274 mV,1.638×10^(−8) A/cm^(2)和4.144×10^(−8) A/cm^(2)。疲劳断口位置和腐蚀最严重区域与数值模拟仿真电位差最大位置一致,随着腐蚀周期的延长,腐蚀越来越严重,腐蚀坑深度逐渐增大。结论2种合金之间发生电偶腐蚀,7B04铝合金作为阳极发生腐蚀,并随着腐蚀周期的延长自腐蚀电位负移,腐蚀速率增大;TC16钛合金作为阴极,随着腐蚀周期的延长自腐蚀电位正移;XRD图谱显示铝合金腐蚀产物的成分主要为Al(OH)_(3)、Al_(2)O_(3);数值模拟仿真的结果与试验结果一致;飞机新结构设计和旧结构维护要重点关注铆钉周围,避免疲劳失效。
    • 张政; 秦明娜; 张璐瑶; 石强; 陈熙萌; 郭艳玲; 陈林
    • 摘要: 为高效准确地测定氢化铝产品中各晶型以及非晶的含量,利用X射线粉末衍射技术(XRD),结合Rietveld多相精修方法,通过向样品中掺入已知含量的内标单晶Si,分析指认了两种AlH_(3)产品中存在的晶型。A样品含α-AlH_(3)、α′-AlH_(3)、Al(OH);三种晶型,质量百分数分别为63.09%(±2.33)、9.74%(±0.65)、6.74%(±0.47),非晶含量为20.44%(±2.38);B样含α-AlH_(3)和Al两种晶型,质量百分数分别为24.00%(±0.75)、7.40%(±0.73),非晶含量为68.60%(±1.17)。结果表明,A样α-AlH_(3)含量较高,非晶含量相对较少,说明A样质量较优。相对标准偏差表明,采用Rietveld多相精修方法,对于相含量高的物相定量分析准确度更高。该方法对AlH_(3)中多种杂质晶型和非晶均可实现可靠的绝对定量分析,为评估AlH_(3)产品质量提供了重要参考依据,对未来AlH_(3)的规模化应用具有重要意义。
    • 常璐; 王朋伟; 刘竞艳; 苗壮; 田弋纬
    • 摘要: 锑化铝(AlSb)薄膜具有优良的光电特性,但因其极易潮解从而极大地限制了AlSb薄膜的应用.采用共溅射的方法制备AlSb薄膜,利用X射线衍射仪(XRD)、扫描电子显微镜(SEM)及俄歇电子能谱(AES)等表征了其镜头结构、形貌及成份等性质特征,并分析了其在空气中的潮解机制.实验表明AlSb薄膜在空气中潮解后在其表面存在有Al(OH)_(3),这说明AlSb与空气中水发生反应,并生成了Al(OH)_(3)和SbH_(3).通过研究AlSb薄膜潮解机制可以选择合适的方式对其潮解过程进行延缓甚至抑制.
    • Thierry Arcady Vila Noemie; Grace Mazel Ifo; Jean-Claude Bibila Mafouba; Vivien Igor Banzouzi Samba; Mpissi Zita Flora Diamouangana; Nursie Rarahu Oba Mboho; Christ Dorvy Privillège Tsaty Nsimba; Joseph-Marie Moutou
    • 摘要: Corrosion of cookware is a growing concern for the durability of materials. A rapidly emerging theme that is one of the major current societal challenges at the interface of environmental and health issues. In this present work, the corrosion of aluminum in food environments (salt water and fresh tomatoes) was studied. The three aluminum utensils were purchased in the various workshops in Brazzaville (Republic of the Congo). The weight loss method followed the effect of cooking media on cookware, X-ray diffraction (XRD) and fluorescence (XRF) are two methods used to characterize alloys. XRF analysis indicates that the samples consist of aluminum as a basic element. XRD reveals that the essential building blocks of cookware samples are aluminum, silicon, iron, copper, magnesium and zinc. Finally, gravimetric measurements are carried out to assess the mass losses of samples of artisanal kitchen utensils when cooking food. Aluminum is found to be sensitive in TF and OS media.
    • 汪寒艳; 马芹永
    • 摘要: 月球基地建设需要大量建筑材料,其中原位利用月壤能有效减少材料和运输成本。为了研究水玻璃固化模拟月壤抗压强度增长机理,分别进行了不同水玻璃掺量下的模拟月壤单轴抗压强度试验,X射线衍射和SEM(scanning electron microscope)电镜扫描试验,得到了水玻璃固化模拟月壤的单轴抗压强度变化规律,分析了能量变化特征和微观结构。研究结果表明:掺入适量水玻璃能提高模拟月壤的单轴抗压强度;采用掺量为5%的水玻璃,在85°C条件下养护28 d模拟月壤的抗压强度可达到3.23 MPa;此时模拟月壤的总能量和弹性能均达到最大值,随着水玻璃掺量不断增加,耗散能整体上呈现下降趋势。微观结构分析表明:水玻璃的碱激发作用和吸附作用所生成N—A—S—H凝胶、钙矾石(AFt)等水化产物填充在颗粒周围,松散的骨架颗粒通过凝胶胶结成致密的网状结构,从而使模拟月壤的强度得到提高。
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