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等离子体增强化学蒸气沉积技术在软包装膜阻透层涂覆中的应用 被引量:1
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作者 董志武 《塑料包装》 CAS 1997年第2期41-44,共4页
应用于食品和医药包装的透明高阻透性涂层已颇受关注。近来,利用反应蒸发和等离子体增强化学蒸气沉积(PECVD)技术在聚合物薄膜上沉积SiOx和AIOx等金属氧化物透明阻逐层的研究活动很多。美国BOC涂覆技术公司的低频、低温PECVD技术,... 应用于食品和医药包装的透明高阻透性涂层已颇受关注。近来,利用反应蒸发和等离子体增强化学蒸气沉积(PECVD)技术在聚合物薄膜上沉积SiOx和AIOx等金属氧化物透明阻逐层的研究活动很多。美国BOC涂覆技术公司的低频、低温PECVD技术,已从一研究开发的涂覆机阶段,成功地进展为三套有生产规模的涂覆装置,其QLF①透明阻透涂覆层目前进入商品化。 展开更多
关键词 明阻透涂层 等离子体增强 化学蒸气沉积 软包装 包装薄膜 包装材料 聚合物
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硅藻土涂层气孔率对大口径球铁管外表面凹陷缺陷的影响 被引量:2
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作者 张鑫 王黎晖 金美余 《铸造》 CAS CSCD 北大核心 2002年第4期218-221,共4页
本文主要从涂层结构 ,即涂层气孔的种类、数量论述其对大口径球铁管外表面凹陷缺陷的影响。从涂料雾化液滴大小、金属型温度、喷嘴距金属型内表面距离、喷嘴移动速度、涂料中膨润土含量、金属型转速等工艺参数来控制涂层气孔率 ,保证涂... 本文主要从涂层结构 ,即涂层气孔的种类、数量论述其对大口径球铁管外表面凹陷缺陷的影响。从涂料雾化液滴大小、金属型温度、喷嘴距金属型内表面距离、喷嘴移动速度、涂料中膨润土含量、金属型转速等工艺参数来控制涂层气孔率 ,保证涂层透气性 。 展开更多
关键词 硅藻土涂料 涂层气孔率 涂层气性 雾化液滴 大口径球铁管 凹陷缺陷
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基于ACFM技术表面裂纹检测仪的设计与开发
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作者 唐云玲 刘利文 赖蕴辉 《中国设备工程》 2024年第9期192-195,共4页
本文设计开发了一种基于ACFM技术的表面裂纹检测仪,可实现透过涂层或绝缘层检测金属表面裂纹缺陷,并通过采用测量裂纹区内漏磁的磁场方式检测磁性金属中的疲劳、腐蚀或工艺性质的表面裂纹,能完成传统磁粉探伤法的全部功能,且不需要清理... 本文设计开发了一种基于ACFM技术的表面裂纹检测仪,可实现透过涂层或绝缘层检测金属表面裂纹缺陷,并通过采用测量裂纹区内漏磁的磁场方式检测磁性金属中的疲劳、腐蚀或工艺性质的表面裂纹,能完成传统磁粉探伤法的全部功能,且不需要清理金属表面、人工磁化和采用磁悬液,极大地提高了金属表面裂纹检测效率。 展开更多
关键词 ACFM 表面裂纹 透涂层 检测
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Preparation and oxygen permeability of Bi_(26)Mo_(10)O_(69) porous layer modified ionic-electronic mixed conductor on air side
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作者 王太和 李榕 +1 位作者 甄强 程琳 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2016年第5期1373-1378,共6页
Bi26MO10O69 nanopowder was prepared by hydrothermal method and used as a surface modification material for oxygen separation membrane to enhance oxygen permeability. Thermal decomposition behavior and phase variation ... Bi26MO10O69 nanopowder was prepared by hydrothermal method and used as a surface modification material for oxygen separation membrane to enhance oxygen permeability. Thermal decomposition behavior and phase variation of the precursor were investigated by thermal analyzer (TG-DSC) and high-temperature X-ray diffraction (HT-XRD). Bi26MO10O69 porous layer was coated on the air side of BaCo0.7Fe0.2Nb0.1O3-δ (BCFN) oxygen permeable membrane by dipping method. In the partial oxidation experiment of coke oven gas (COG), the Bi26Mo10O69-coated BCFN membrane exhibits higher oxygen permeability and CH4 conversion than the uncoated BCFN membrane. When the thickness of BCFN membrane was 1 mm and the COG and air fluxes were 120 and 100 mL/min, the oxygen permeation flux reached 16.48 mL/(min.cm^2) at 875℃, which was 16.96% higher than the uncoated BCFN membrane. Therefore, Bi26MoloO69 porous layer on the air side will be promising modification coating on the oxygen permeability of BCFN membrane. 展开更多
关键词 Bi26Mo10O69 porous-coating BaCo0.7Fe0.2Nb0.1O3-δ(BCFN) oxygen permeation flux
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Formation and capacitance properties of Ti-Al composite oxide film on aluminum 被引量:1
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作者 姚雷 刘建华 +2 位作者 于美 李松梅 吴昊 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2010年第5期825-830,共6页
Al specimens were covered with TiO2 film by sol-gel dip-coating and then anodized in ammonium adipate solution.The structure,composition and capacitance properties of the anodic oxide film were investigated by transmi... Al specimens were covered with TiO2 film by sol-gel dip-coating and then anodized in ammonium adipate solution.The structure,composition and capacitance properties of the anodic oxide film were investigated by transmission electron microscopy (TEM),Auger electron spectroscopy (AES),X-ray diffractometry (XRD) and electrochemical impedance spectroscopy (EIS).It was found that an anodic oxide film with a dual-layer structure formed between TiO2 coating and Al substrate.The film consisted of an inner Al2O3 layer and an outer Ti-Al composite oxide layer.The thickness of layers varied with the number of times of sol-gel dip-coating.The capacitance of anodic oxide films formed on coated specimens was at most 80% higher than that without TiO2.In film formation mechanism,it was claimed that the formation of composite oxide film was mainly affected by the structure of micro-pores network in TiO2 coating which had an influence on Al3+ and O2? ions transport during the anodizing. 展开更多
关键词 Al electrolytic capacitor composite oxide film anodized dielectric film sol-gel coating capacitance property
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In-situ preparation, modulation and mechanism of refractory metal carbide gradient coating
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作者 Quan-cai ZHANG Hong WAN Jin-yu GONG 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2022年第12期4030-4040,共11页
TiC, ZrC and TaC modified layers were in-situ prepared on graphite matrix by chemical vapor infiltration method with metal salts as the activator. Taking the TiC modified layer as an example, through thermodynamic cal... TiC, ZrC and TaC modified layers were in-situ prepared on graphite matrix by chemical vapor infiltration method with metal salts as the activator. Taking the TiC modified layer as an example, through thermodynamic calculation and experiment, the thermal decomposition process of raw materials(Ti/K_(2)TiF_(6)) was analyzed, the formation mechanism of TiC was determined, and the distribution of TiC modified layer was modulated. The results show that activator K_(2)TiF_(6)has higher decomposition temperature than NH4Cl, which is conducive to improving the utilization rate of raw materials in the gas infiltration process. Increasing the content of Ti powder can increase the concentration of reaction gas and contribute to the formation of TiC modified layer. When the molar ratio of Ti to K_(2)TiF_(6)is 3:1, the surface thickness and infiltration depth of Ti C are 5.42 and 136.24 μm, respectively. Increasing the reaction temperature can improve the rate of in-situ reaction and the thickness of TiC surface layer. When the experimental temperature rises to 1600 °C, the TiC surface layer thickness increases to 20.27 μm. 展开更多
关键词 GRAPHITE TIC in-situ reaction gradient coating chemical vapor infiltration refractory metal carbide
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