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黑色金属室温薄膜磷化工艺
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《宇航材料工艺》 CAS CSCD 北大核心 2005年第3期62-62,共1页
磷化是金属表面处理中重要的化学处理方法。钢铁零件的磷化,是在锰、锌、铁的磷酸盐溶液中经电化学反应和磷二氢盐水解后,在其表面生成一层难溶于水的磷酸盐保护膜的过程。膜重在1.1—4.5g/m^2的轻量级磷化膜被广泛地用于漆膜和塑... 磷化是金属表面处理中重要的化学处理方法。钢铁零件的磷化,是在锰、锌、铁的磷酸盐溶液中经电化学反应和磷二氢盐水解后,在其表面生成一层难溶于水的磷酸盐保护膜的过程。膜重在1.1—4.5g/m^2的轻量级磷化膜被广泛地用于漆膜和塑料粉末涂膜的底层。磷化用于金属表面涂装可大大提高漆膜与金属基体之间的结合力和抗腐蚀性能,延长产品使用寿命,提高漆膜的均匀性和光泽度。 展开更多
关键词 黑色金属 室温薄膜磷化工艺 表面处理 碱性除油
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室温发黑工艺的推广和应用
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作者 李合安 《科技通讯(郑州)》 1989年第2期31-32,30,共3页
关键词 金属防腐 色层保护 室温发黑工艺
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室温生长AZO/Al2O3叠层薄膜晶体管性能研究 被引量:2
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作者 宁洪龙 曾勇 +12 位作者 姚日晖 刘贤哲 陶瑞强 郑泽科 方志强 胡诗犇 陈建秋 蔡炜 徐苗 兰林锋 王磊 彭俊彪 李正操 《发光学报》 EI CAS CSCD 北大核心 2016年第11期1372-1377,共6页
针对目前大多数氧化物薄膜晶体管都需要采用热退火工艺来提高其性能不利于其在柔性显示器件中应用这一问题,提出了一种采用室温工艺制备的新型TFT器件,无需退火处理即可获得较好的器件性能。该器件采用脉冲激光沉积技术制备的AZO/Al_2O_... 针对目前大多数氧化物薄膜晶体管都需要采用热退火工艺来提高其性能不利于其在柔性显示器件中应用这一问题,提出了一种采用室温工艺制备的新型TFT器件,无需退火处理即可获得较好的器件性能。该器件采用脉冲激光沉积技术制备的AZO/Al_2O_3叠层结构作为沟道层。与单层AZO-TFT器件相比,叠层TFT器件具有更优异的性能,其迁移率为2.27 cm2·V-1·s-1,开关比为1.43×106。通过对AZO/Al_2O_3叠层薄膜的厚度、密度、粗糙度、物相、界面特性及能带结构等进行分析,发现这种叠层结构能够使电子的运动被限制在AZO薄膜平面内,即形成了二维电子传输,从而提升TFT器件的性能。 展开更多
关键词 叠层薄膜晶体管 室温工艺 二维电子传输
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室温薄膜磷化用I-5A型表面调整剂
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作者 部嘉谦 《宇航材料工艺》 CAS CSCD 北大核心 1990年第6期47-52,共6页
为细化磷化膜的结晶可采用多种方法,其中表面调整是最有效的一种。此外,表面调整还是在磷化液中主盐浓度低的条件下进行室温磷化不可缺少的前处理工序。本文综述了I-5A型表面调整剂的使用效果及使用稳定性。含有SJ稳定剂的I-5A液具有独... 为细化磷化膜的结晶可采用多种方法,其中表面调整是最有效的一种。此外,表面调整还是在磷化液中主盐浓度低的条件下进行室温磷化不可缺少的前处理工序。本文综述了I-5A型表面调整剂的使用效果及使用稳定性。含有SJ稳定剂的I-5A液具有独特的表面调整特性。它能促使钢铁基体表面成膜速度加快、降低膜层的孔隙率,导致膜层细而致密,以致不再进行钝化处理就能获得满意的磷化效果。表面调整液中加入SJ稳定剂后还可长期保持胶体态表面调整液的使用稳定性。I-5A表面调整液与室温磷化液的优良匹配性使得磷化膜和磷化膜—漆膜的质量达到或超过了国家标准(GB6807-86)中的技术要求。 展开更多
关键词 Ⅰ—5A型表面调整剂 碳钢 表面涂装 锌系薄膜 室温磷化工艺
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室温发黑前处理经验
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作者 杨磊 《电镀与涂饰》 CAS CSCD 1995年第2期58-58,共1页
室温发黑前处理经验杨磊(戚墅堰机车车辆工艺研究所邮码:213011)ExperiencesinPretreatmentforRoomTemperatureBlackening¥byYANGLei钢铁发黑工艺是80年代... 室温发黑前处理经验杨磊(戚墅堰机车车辆工艺研究所邮码:213011)ExperiencesinPretreatmentforRoomTemperatureBlackening¥byYANGLei钢铁发黑工艺是80年代后逐渐发展起来的,其前身只是作为不... 展开更多
关键词 金属 前处理 室温发黑工艺 磷化 发黑工艺
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Study on the comparison of the pyrolysis gas release of lignite and its briquette 被引量:3
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作者 ZHU Shi-feng CHU Mo ZHAO Fei-xiang 《Journal of Coal Science & Engineering(China)》 2012年第2期177-181,共5页
In this experiment, lignite was refined and processed through binderless briquette preparation process from low-rank coal and became briquette. Then, lignite and its briquette were pyrolysed as materials to compare th... In this experiment, lignite was refined and processed through binderless briquette preparation process from low-rank coal and became briquette. Then, lignite and its briquette were pyrolysed as materials to compare the nature of their pyrolysis. In this study, the experiment was carried out through a lab tube furnace, at a heating rate of 10 ~C/min, and the gas was analyzed and compared, which was collected at different temperatures. The results show that: in the pyrolysis temperature of 550-850 ℃, the semi-coke yield of briquette is 2%-6% higher than lignite, the tar yield of briquette is 2%-3% higher than lignite and the gas yield of briquette is 4%-9% less than lignite. The time required for complete release of the briquette is about 20 min less than lignite. The components in the pyrolysis gas of lignite and its briquette are the same, and their variation with the pyrolysis temperature is similar. 展开更多
关键词 pyrolysis gas LIGNITE BRIQUETTE
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Implementation of a Forest Biomass-Based Biofuel Industry: A Canadian Experience
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作者 Mariya Marinova Michel Perrier Jean Paris 《Journal of Energy and Power Engineering》 2014年第10期1680-1686,共7页
The forest biomass is an abundant renewable resource from which biofuels can be derived. In the Kraft process, the cellulose is extracted from the wood to form the paper pulp while the other organic components, primar... The forest biomass is an abundant renewable resource from which biofuels can be derived. In the Kraft process, the cellulose is extracted from the wood to form the paper pulp while the other organic components, primarily hemicelluloses and lignin, are burnt to produce steam. It is possible to divert part of the hemicelluloses or lignin to produce fuels on site, a mode of operation referred to as the integrated forest biorefinery. Hemicelluloses can be hydrolysed into sugars which in turn are converted into ethanol or butanol, while lignin can be extracted from a residual process stream, the black liquor, by acid precipitation, de-ionized, dried and directly used as a fuel or further processed into value added chemicals. Biorefinery processes have been proposed and analysed by simulation on Aspen Plus. Intensive integration of thermal energy, water and material systems is of paramount importance to the sustainability of the global site; the increased energy load on the utility systems could cause rising dependency of the global site on fossil fuels. To avoid this consequence, a new original energy efficiency analysis and enhancement methodology has been developed and validated on actual Canadian Kraft mills before being applied to the integrated biorefinery and, has produced remarkable results far superior to the current engineering practice. This has led to the concept of the GIFBR (green integrated forest biorefinery), i.e., an industrial site with zero fossil fuel consumption and reduced GHG (greenhouse gases) emissions vs. the Kraft process and biorefinery plant alone. The GIFBR incorporates a woody biomass gasifier producing syngas as a fuel for the integrated biorefinery and for steam production or sale. It can also include a CHP (combined heat and power) unit driven by steam made available by liberated production capacity from the installed power plant. 展开更多
关键词 Wood biomass renewable energy integrated forest biorefinery biofuels Kraft lignin extraction BIOETHANOL greenbiorefinery energy efficiency enhancement.
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