추천논문   1. 세라믹 압력 센서 -Abstract- Constantan thin film was deposited on Al2O3 substrate by vacuum evaporation technology and semiconductor ordinary photolithography to form the sensitive bar of strain-resistance pressure sensor. The static characteristics of the resultant ceramic sensor were measured and the results showed that the linearity, repetition properties, return error and the creep of the ceramics pressure sensor are more excellent than the conventional sensor.   2. Al2O3 및 붕규산 유리(BSG)의 LTCC 시스템의 유전 특성 -Abstract- In this paper, three types of Al2O3 powders with different sizes (1.6μm, 0.7μm, and 0.3μm) were used in a LTCC system of Al2O3 and borosilicate glass (BSG). Al2O3 and BSG are selected on account of their coefficient of thermal expansion (CTE) similar to silicon, which can reduce thermal stress. It was found that the dielectric constant, ε, of substrates drops with the decrease of Al2O3 powder size. ε increases with the increase of Al2O3 content for the sample with 1.6 μm Al2O3 powder, but decreases with the increase of Al2O3 content for the samples with 0.7 μm and 0.3 μm Al2O3 powders. SEM observations revealed that more pores with low permittivity appeared for the samples with smaller Al2O3 powders, resulting in the drop of dielectric constant of the sample finally.   3. 이형 시스템에서 히터 요소 제작 Abstract: The Heater element designed in this study consists of a ceramic substrate with dual electrical resistance tracc pattcms.   4.열 배리어 코팅을 위한 새로운 저열 전도성 세라믹 재료 Abstract: The increase of the efficiency for gas turbines leads to the increasing combustion-chambertemperatures. Rapid degradation of the conventional yttria-stabilized zirconia coatings does not fulfill therequirements at these temperatures for a reliable thermal barrier coatings (TBCs) due to the phasetransformation of zirconia and the sintering behaviour. Therefore, it is very important to develop novelceramic materials for TBCs with low thermal conductivity and long-term stability at high temperatures.In this paper, the developments of potential novel ceramic materials for TBCs with low thermalconductivity are reviewed. 5. 스파크 플라즈마 소결에 의한 Gd2Zr2O7 세라믹제조 및 특성 Abstract: Rare earth Gd2Zr2O7 ceramic was prepared by spark plasma sintering from Gd2O3 and ZrO2 powders. The powders were sintered at 1400°C for 10min. The synthesized ceramic was annealed at 800°C for 2h under air atmosphere. XRD structural and SEM microstructural characterization showed the formation of a single phase material with pyrochlore crystal structure. The relative density of Gd2Zr2O7 ceramic was measured by the Archimedes method with an immersion medium of water and the results revealed that the relative density of the ceramic was 92%. The thermal conductivity of the ceramic was tested by laser flash method from room temperature to 700°C. The result shows the thermal conductivity of Gd2Zr2O7 ceramic is lower than that of 7YSZ.   세라믹소재   1. Mullite 2. Silicon Carbide : SiC, R-SiC, SiSiC,HPSiC 3. Silicon Nitride : SiCN4, H-SiCN4, Fine SiN4 4. Alumina 5. Corundum 6. Boron Nitride Caborn 1. Graphite 2. Graphene