HgCdTe光伏探测器抑制背景通量的研究

对于长线列焦平面器件，简单的单孔冷屏往往不能有效地抑制背景，本文在Hg1-xCdxTe光伏探测器背面镀制微孔冷屏的办法来降低背景。测试结果表明，探测器镀制微孔冷屏之后，可以使背景辐射通量大幅度减少，同时减少了光串音。从而证明微孔冷屏的确可以有效地抑制背景通量，减少光敏元响应面积扩大的问题，对于红外焦平面器件的性能提高有帮助。     

分层均燃煤层特性冷态试验研究

对分层均燃煤层特性进行了冷态试验研究,得出分层供煤直观看能得到非常好的分层堆积效果,但煤层空隙率和通风阻力数据并未证实分层供煤煤层具有明显的优势。     

含微量元素铜焊锡丝的研制

在６０／４０的锡铅焊料中加入０．２％左右的铜，凝固后具有均匀细小的共晶组织，其熔点为１８３℃，焊点强度和扩展率均高于未加铜的６０／４０锡铅焊料，并且含铜的锡铅焊料在焊接时，对铜烙铁头和微细铜线了小的熔蚀性。     

烟机结垢的成因分析及防范措施

通过对烟机垢物的元素和晶体组成进行表征,分析其形成条件,计算验证并探讨垢物的形成过程,并提出应对防范措施。烟机结垢过程为：极少数原料油滴在反应汽化段内未完全汽化,未汽化油黏附在催化剂细粉表面并缩合生焦;部分焦炭颗粒未在再生器内烧尽,进入烟道后继续燃烧达到细粉的熔融温度,转化为液相黏性物质;携带微量高温熔融粉尘的烟气在三级旋风分离器下料口、烟机叶片等部位受高速离心作用,黏附到易结垢部位,形成无定形垢物。可通过提升原料油喷嘴雾化效果,调整合适的剂油比和系统细粉含量来减少烟机结垢。     

新型热处理制度获得高强高韧激光3D打印IN718合金

激光选区熔化(SLM)成型的IN718高温合金,存在高温强度及韧性无法兼得的难题。针对此问题,通过Double Doelhert设计矩阵优化IN718的激光3D打印参数,研究不同热处理制度与IN718力学性能的关系。结果表明:通过参数调控,可使SLM成型试样的致密度达到99.9%;通过采用创新性开发的固溶+短时双时效后处理制度,可获得高强、高韧的激光3D打印IN718合金,其力学性能全面达到锻件的技术指标。该办法为SLM成型IN718合金组织调控提供了新思路,新型后处理制度可广泛应用于SLM成型的航空发动机零件。     

电子束熔凝NiCoCrAlY涂层的高温氧化行为分析

在GH140高温合金钢基体表面采用磁控溅射沉积NiCoCrAlY涂层,并用电子束进行熔凝处理。分析结果表明,电子束熔凝使NiCoCrAlY涂层与基体形成组分梯度变化的混合层,提高了涂层与基体的结合程度。涂层经1000℃和1100℃,10h的对比氧化试验,结果表明,在1000℃时,Cr扩散至表面,由于CrO3的挥发而迅速损耗,但Y的存在,在一定程度上减缓了Cr的损失速度。1100℃时起抗氧化作用的主要来自Al、Ti、Si、Mn等,Al的内氧化抑止了Al的外扩散。     

寒冷地区混凝土面板堆石坝面板的设计

混凝土面板堆石坝的面板受荷载作用时，发生弹性变形，产生内力，可将其视为弹性地基梁结构，进行结构分析．设计中应根据面板的受力特征进行分缝布置，选择合理的板厚，采用合理的结构配筋．对处于寒冷地区的混凝土面板堆石坝，要考虑冰冻对面板的作用和影响，重点考虑面板的抗冻问题．     

寒冷地区混凝土面板堆石坝垫层的设计

对于寒冷地区的钢筋混凝土面板堆石坝，应根据水库运行特征分区考虑垫层的设计．冬季水位以上区域重点考虑防冻涨问题；水位以下区域考虑垫层的基础及防渗两种功能协调共同发挥作用的问题．对于寒冷地区，垫层宽度的选择是造价、可靠性和施工进度要求的综合考虑结果．施工方法也是设计寒冷地区面板坝时必须考虑的主要因素之一．     

Dynamic polymorphic phase transitions in a model binary triglyceride system measured by position-sensitive X-ray diffraction methods

X-ray diffraction measurements have been made on a binary mixture of pure tripalmitin and tristearin which undergoes particular polymorphic phase transitions on heating from the solid. The results were obtained using a position-sensitive detector which can record the whole diffraction pattern in time periods less than a minute. This allows many patterns to be recorded during the transformations where heating rates can be up to several^oC/min. As such the transitory existence of the intermediate β' phase has been unambiguously identified. The results serve to exhibit the usefulness of the X-ray apparatus and indicate its potential for future studies in dynamic crystallization and melting. On behalf of Loders-Croklaan     

Adhesive Bonding of Oil-Contaminated Steel Substrates

Durability of adhesive bonds formed by curing epoxies against oil-contaminated steel substrates using amidoamine curing agents was determined during exposure to boiling water. The most durable bonds were obtained using amidoamine curing agents with relatively low amine numbers and by blending silane coupling agents such as γ-glycidoxypropyltrimethoxysilane (γ-GPS) and N-(2-aminoethyl)-3-aminopropyltrimethoxy silane (AAMS) into the adhesives. When X-ray photoelectron spectroscopy (XPS) was used to characterize the failure surfaces of the adhesive joints after exposure to boiling water, it was determined that adhesives prepared using amidoamine curing agents with low amine numbers were able to displace the oil from the steel surface but adhesives prepared with amidoamine curing agents with high amine numbers were not. Results obtained from XPS also showed that the amino groups on the substrate fracture surfaces of joints prepared using curing agents with low amine numbers were protonated whereas the amino groups in the bulk adhesive were not, indicating that there was a chemical interaction between the curing agent and the hydrated surface of the substrate. It was also shown using infrared spectroscopy that the amidoamine curing agents formed salts with calcium compounds in the oil.