紫砂浮雕探微

紫砂浮雕探微徐南（江苏省陶瓷研究所·宜兴·２１４２２１）ＡＣａｒｅｆｕｌＳｔｕｄｙｏｆＹｉ－ＸｉｎｇＰｏｔｔｅｒｙｉｎＲｅｌｉｅｆ￥ＸｕＮａｎ（ＪｉａｎｇｓｈｕＣｅｒａｍｉｃＲｅｓｅａｒｃｈＩｎｓｔｉｔｕｔｅ）１前言紫砂陶是陶瓷材质中不可多得的一个品...     

陶瓷作品摄影的表现手法

陶瓷作品摄影的表现手法张庭信（景德镇陶瓷学院·景德镇·３３３００１）ＴｈｅＴｅｃｈｎｉｑｕｅｏｆＥｘｐｒｅｓｓｉｏｎｉｎＰｈｏｔｏｇｒａｐｈｉｎｇＣｅｒａｍｉｃＷａｒｋｓ￥ＺｈａｎｇＴｉｎｇＸｉｎ（ＪｉｎｇｄｅｚｈｅｎＣｅｒａｍｉｃＩｎｓｔｉｔｕｔｅ...     

陶瓷造型设计基础 一

陶瓷造型设计基础（一）张学文（景德镇陶瓷职工大学·景德镇·３３３０００·）ＴｈｅＢａｓｉｃＣｏｕｒｓｅｏｆＣｅｒａｍｉｃＭｏｄｅｌｉｎｇＤｅｓｉｎｇｎ￥ＺｈａｎｇＸｕｅｗｅｎ（ＪｉｎｇｄｅｚｈｅｎＰｒｏｆｅｓｓｉｏｎａｌＵｎｉｖｅｒｓｉｔｙ）ｌ总论大...     

赴即度尼西亚展出札记

赴即度尼西亚展出札记秦锡麟（江西省陶瓷研究所·景德镇·３３３００１·）ＭｙＲｅａｄｉｎｇＮｏｔｅｓｏｎＴｈｅＥｘｈｉｂｉｔｉｏｎｉｎＩｎｔｏｎｅｓｉａ￥ＱｉｎＸｉｌｉｎｇ（ｊｉａｎｇＸｉＣｅｒａｍｉｃＲｅｓａｒｃｈＩｎｓｔｉｔｕｔｅ）应印尼华侨叶先生...     

陶瓷造型设计基础（二）

陶瓷造型设计基础（二）张学文（景德镇陶瓷职工大学·景德镇·３３３００１·）ＴｈｅＢａｓｉｃＣｏｕｒｓｅｏｆＣｅｒａｍｉｃＭｏｄｅｌｉｎｇＤｅｓｉｎｇ￥ＺｈａｎｇＸｕｅｗｅｎ（ＪｉｎｇｄｅｚｈｅｎＰｒｏｆｅｓｓｉｏｎａｌＵｎｉｖｅｒｓｉｔｙ）饭碗的高度...     

陶瓷造型设计基础（三）

陶瓷造型设计基础（三）张学文（景德镇陶瓷职工大学景德镇·３３３００１）ＴｈｅＢａｓｉｃＣｏｕｒｓｅｏｆＣｅｒａｍｉｃＭｏｄｅｌｉｎｇＤｅｓｉｇｎ￥ＺｈａｎｇＸｕｅｗｅｎ（ＪｉｎｇｄｅｚｈｅｎＰｒｏｆｅｓｓｉｏｎａｌｕｎｉｖｅｒｓｉｔｙ）反常限度：反常...     

玻璃弯曲强度的裂纹影响

玻璃弯曲强度的裂纹影响宋显辉，潘素瑛（武汉工业大学４３００７０）ＴｈｅＥｆｆｅｃｔｏｆＣｒａｃｋｓｏｎＢｅｎｄｉｎｇＳｔｒｅｎｇｔｈｏｆＧｌａｓｓ￥ＳｏｎｇＸｉａｎｈｕｉ；ＰａｎＳｕｙｉｎｇ（ＣｅｎｔｒｅｆｏｒＭａｔｅｒｉａｌｓＲｅｓｅａｒｃｈ＆Ａｎ...     

滑石之分析与应用

滑石之分析与应用彭小平（江西省陶瓷工业公司·景德镇·３３３０００）ＴｈｅＡｎａｌｙｓｉｓａｎｄＡｐｐｌｉｃａｔｉｏｎｏｆＴａｌｃｕｍ￥ＰｅｎｇＸｉｎａｏｐｉｎｇ（ＴｈｅｃｅｒａｍｉｃＩｎｄｕｓｔｒｙＣｏｒｐｏｒａｔｉｏｎｏｆＪｉａｎｇｘｉＰｒｏｕｉｎ...     

骨质瓷坯体的定位急速干燥

骨质瓷坯体的定位急速干燥肖立阁（唐山市第一瓷厂，唐山０６３０２０）ＴｈｅＰｏｓｉｔｉｏｎａｌＦａｓｔＤｒｙｉｎｇｏｆｔｈｅＢｏｎｅＣｈｉｎａＢｏｄｙ￥ＸｉａｏＬｉｇｅ（ＦｉｒｓｔＰｏｒｃｅｌａｉｎＦａｃｔｏｒｙ，ＴａｎｇｓｈａｎＣｉｔｙ）骨质瓷坯体由...     

国际会讯

２００１年国际会议（１）第３３届工程和建设缔约年会（３３ｒｄ　ＡｎｎｕａｌＥｎｇｉｎｅｅｒｉｎｇ　ａｎｄ　Ｃｏｎｓｔｒｕｃｔｉｏｎ　Ｃｏｎｔｒａｃｔｉｎｇ　Ｃｏｎｆｅｒｅｎｃｅ）于２００１年９月６～７日在美国,亚利桑那州,斯科茨代尔市举行。联系地址：ＡＩＣｈＥｘｐｒｅｓｓ　Ｓｅｒｖｉｃｓ　Ｃｅｎｔｅｒ　ａｔ　１－８００－ＡＩＣｈｅｍＥ（１－８００－２４２－４３６３）ｏｒ　Ｘｐｒｅｓｓ　＠　ａｉｃｈｅ．ｏｒｇ．ｆｏｒ　ｍｏｒｅ　ｉｎｆｏｒｍａｔｉｏｎ．（２）第４６届合成氨装置及有关设施安全学术讨论…     

热处理对Li2O-Al2O3-SiO2微晶玻璃的影响

本文对Li2O-Al2O3-SiO2（LAS）微晶玻璃的热处理制度、光学性能和热膨胀性能进行了分析,分析结果表明：应根据DTA曲线来确定最佳的成核温度范围和晶化温度范围并合理制定热处理制度;晶核密度和晶核尺寸随保温时间逐渐增加具有相反的趋势;晶粒尺寸大小将很大程度上影响微晶玻璃的光学性能;由于β-石英固溶体和β-锂辉石固溶体具有各向异性特点和螺旋链状结构,使其具有低的热膨胀系数和自由恢复形状特性。     

Improvement of Mechanical Properties of Machinable Glass-Ceramics through Postmachining Heat Treatments

A mica-based machinable glass-ceramic has been converted to a glass-ceramic containing cordiertie and body-centered cubic chondrodite through heat treatment at temperatures higher than that used for the crystallization of mica. The machinability is lost, microhardness increases, and the thermal expansion coefficient decreases with the change of the crystalline phase from mica to cordierite and chondrodite.     

Eu2+-doped oxyfluoride glass-ceramic with nepheline as an efficient 400 nm UV-LED color converter

SiO₂-Na₂O-Al₂O₃-LaF₃ glass-ceramics doped with Eu²⁺ were synthesized as an efficient inorganic color converter for 400 nm UV-LED. When Eu²⁺ formed within the glass matrix, the obtained glass showed cyan emission under 400 nm excitation, but its emission peak drastically shifted to greenish yellow upon heat treatment. With heat treatment the glass-ceramic also showed highly increased emission intensity, and the color coordinate of the glass-ceramic shifted to yellow. When it was mounted on top of a 400 nm UV-LED, it demonstrated high color conversion efficiency and practical feasibility as an UV-LED color converter. To vary the color coordination the heat-treatment conditions and the thickness of the glass-ceramic were adjusted. The resulting ceramic showed a high quantum yield of up to 78%, which is comparable to conventional ceramic phosphors. The spectral change in the glass-ceramic is attributed to the formation of nepheline and LaF₃ crystalline phases. X-ray diffractometer (XRD), transmission electron microscope with energy dispervise spectroscopy (TEM-EDS) and cathode luminescence (CL) were used to investigate the mechanism of Eu²⁺-doped nepheline crystal formation, and its effect on the spectral change with heat treatment.     

Joining of Silicon Carbide with a Cordierite Glass-Ceramic

A method for the joining of silicon carbide using a cordierite glass-ceramic has been developed. Cordierite, with glass-ceramic processing, remains amorphous and wets the SiC substrate to form a strong bond when rapidly fired. Subsequent heat treatment crystallizes a multiphase interlayer with a matching bulk thermal expansion coefficient (CTE). A benchtop tape casting method for depositing joining precursor films of varying thickness is described. The wetting characteristics of cordierite on SiC that are pertinent to the joining process are shown to be highly sensitive to processing atmosphere. Doping with a fluoride ion flux can lower the peak processing temperature without significantly altering the crystallization path. The effect of interlayer thickness is observed by monitoring indentation crack paths and with 4-point bending tests. Controlling the degree of crystallinity is shown to tailor the mismatches in thermal expansion coefficient and elastic moduli to produce joints of high strength (σ_F > 500 MPa). Characterization is accomplished with XRD, SEM, and TEM.     

结合中国专利申请分析微晶玻璃制造技术的发展和应用

微晶玻璃,是由玻璃经受控热处理得到的多晶固体,具有机械强度高、热膨胀系数可调、热稳定性好、化学稳定性好、低介电损耗、电绝缘性好的特点。依据1985年至今的微晶玻璃相关中国专利申请,分析了微晶玻璃制造技术在建筑材料、化学工业、机械工业、电子工业以及生物医学领域的发展和应用情况。     

Thermal expansion coefficient tailoring of LAS glass-ceramic for anodic bondable low temperature co-fired ceramic application

The Li–Al–Si glass-ceramics were prepared by conventional glass-ceramic fabrication method. The influences of Na₂O content on the sintering property, microstructure, and coefficient of thermal expansion were investigated. The results show that the coefficient of thermal expansion of LAS glass-ceramics can be tailored to match that of silicon by the addition of Na₂O content. Na₂O has a remarkable influence on the crystallinity of Li–Al–Si glass-ceramic. The coefficient of thermal expansion of Li–Al–Si glass-ceramic is thus tunable between that of glass phase and crystal phase. The Si–O bond length change in stretch vibration modes introduced by Na₂O also contributes to the variation of coefficient of thermal expansion of the Li–Al–Si glass-ceramics. The coefficient of thermal expansion of the Li–Al–Si glass-ceramic with 1.5 wt% Na₂O addition is about +3.34 ppm/°C at 350 °C and shows a good compatibility to that of silicon in a wide temperature range, which makes it a promising candidate for anodic bondable low temperature co-fired ceramic substrate applications.     

Characterization investigations of glass-ceramics developed from Seyitömer thermal power plant fly ash

Glass-ceramic materials were produced from fly ash samples obtained from the Seyitömer thermal power plant in Turkey. Glass samples were crystallized by suitable nucleation and crystal growth heat treatments on the basis of DTA results. The microstructural analysis of glass-ceramic samples were carried out using SEM and XRD techniques. SEM investigations clearly demonstrated the presence of a tiny crystallized phase dispersed in the microstructure. XRD results revealed that the main crystalline phase was diopside [Ca(Mg,Al)(Si,Al)₂O₆]. It was observed that the mechanical properties and the thermal expansion coefficient of the glass-ceramic samples depend only on the amount of the crystalline phase. Furthermore, chemical durability of the produced glass-ceramic samples were high.     

密度测量在Li_2O－Al_2O_3－SiO_2系低膨胀微晶玻璃研究与生产控制

密度测量在Ｌｉ＿２Ｏ－Ａｌ＿２Ｏ＿３－ＳｉＯ＿２系低膨胀微晶玻璃研究与生产控制中应用的若干讨论孙方明，隋梅，陈树彬，黄宗家（华东理工大学２００２３７）ＤｅｎｓｉｔｙＤｅｔｅｒｍｉｎａｔｉｏｎｏｆＬｉ＿２Ｏ－Ａｌ＿２Ｏ＿３－ＳｉＯ＿２ＳｙｓｔｅｍＬｏｗ...     

钒酸盐玻璃陶瓷封接材料的制备及应用

采取熔融-晶化法制备了主晶相为Ba3(VO4)2的玻璃陶瓷,研究了热处理制度对玻璃陶瓷样品析晶情况、热学及力学性质的影响.结果表明:在最佳热处理条件晶化540 ℃,保温2 h下,玻璃陶瓷的转变温度Tg、软化温度Tf、热膨胀系数及硬度均优于基质玻璃,且热膨胀系数为17.81 ×10 -6℃-1与金属铜的热膨胀系数值( 17.7 × 10-6℃-1)临近,能够与之直接封接,将有毒的含铅封接材料取而代之.     

Conventional and electric field-assisted ion exchange on glass-ceramics for dental applications

Ion exchange can be used to mechanically reinforce dental glass-ceramics to reduce the problems associated to the flaws created upon various processing steps and handling. This work introduces a novel ion exchange method to the field of dental glass-ceramic to increase the possibilities of preparing highly reliable glass-ceramic restorations. The aim of the study was to compare Electric Field-Assisted Ion Exchange with conventional method, for newly developed nepheline based dental glass-ceramic. Multicomponent glass system was synthesized using melt-quench method and then prepared into glass-ceramic specimens via powder sinter-crystallisation route. The prepared glass-ceramic specimens were tested for bi-axial flexural strength before and after ion exchange according to the dental ceramics ISO 6872:2015. Ion exchange process was carried out in molten potassium nitride and the potassium penetration depth determined by EDXS was found greater and occurring in a matter of minutes within the nepheline crystal structure during electrical field assisted ion exchange compared with several hours of conventional treatment. The newly developed nepheline glass-ceramic system and the results achieved by electrical field assisted ion exchange may renew the ion exchange concept for dental application.