Zobrazeno 1 - 10
of 89
pro vyhledávání: '"Won Seung Cho"'
Publikováno v:
Metallurgical and Materials Transactions B. 48:1595-1601
The effect of Al2O3 concentration on the density and structure of CaO-SiO2-Al2O3 slag was investigated at multiple Al2O3 mole percentages and at a fixed CaO/SiO2 ratio of 1. The experiments were conducted in the temperature range of 2154 K to 2423 K
Publikováno v:
RSC Advances. 6:63286-63290
A Ti-MIL125-NH2 membrane with a high surface coverage of uniform crystals was prepared on a TiO2 disc using a unique combination of microwave-assisted nucleation followed by ultrasonic irradiation, which produced a highly stable catalytic film for a
Publikováno v:
Microporous and Mesoporous Materials. 213:161-168
A densely-packed IRMOF-3 membrane (S-IRMOF-3(Mem)), ∼55 μm in thickness, on an Al 2 O 3 disc support was prepared via a sonochemical synthesis route, and the optimal fabrication conditions were established. Bare IRMOF-3 particles (S-IRMOF-3(p)) we
Publikováno v:
Applied Surface Science. 332:167-171
X-type zeolite with mesoporosity (Meso-13X) was prepared by using dimethyloctadecyl[3-(trimethoxysilyl)propyl]ammonium chloride as a mesopore-generating agent, and then modified with polyethylenimine (PEI) through a physical impregnation method to fo
Autor:
Won-Seung Cho, Ki-Ju Lee
Publikováno v:
Metals and Materials International. 18:887-893
As a pore precursor, activated carbon of different contents (0 to 30 vol%) was added to (Ba,Sr)TiO3 powder. Porous (Ba,Sr)TiO3 ceramics were prepared by pressureless sintering at 1350 °C for 1 h in air. The effects of the activated carbon content on
Autor:
Seung-Bok Choi, Won-Seung Cho, Myeong-Woo Cho, Bong-Cheol Shin, Jae-Jin Jae, Kwang-Pyo Hong, Yong-Kyu Cho
Publikováno v:
Materials and Manufacturing Processes. 27:1135-1138
In this study, ultraprecise polishing of alumina reinforced zirconia ceramics using magneto rheological (MR) fluids and diamond abrasives was investigated. First, alumina-reinforced zirconia composites, containing 0 to 30 vol% alumina, were fabricate
Publikováno v:
Metals and Materials International. 18:545-551
Alumina-reinforced zirconia composites containing 0 to 30 vol% of alumina were fabricated by sintering at 1550 °C for 2 h in air. The effect of the Al2O3 content on the mechanical properties and microstructure of 3Y-TZP ceramics was investigated. Al
Publikováno v:
Ceramics International. 38:2429-2436
Zirconia-toughened alumina composites containing 0–30 vol% of 3Y-TZP were fabricated by sintering at 1600 °C for 2 h in air. The effect of the 3Y-TZP content on the mechanical properties and microstructure of the alumina ceramics was investigated.
Publikováno v:
Journal of the Korean Ceramic Society. 48:152-159
The green and hard machining characteristics of dental ceramics are of great interest to dental industry. The green bodies of TZP/Al₂O₃ composites were prepared by the cold isostatic pressing, and machined on the CNC lathe using PCD (polycrystall
Publikováno v:
Metals and Materials International. 16:99-107
Porous Y-doped (Ba,Sr)TiO3 ceramics were prepared by the spark plasma sintering of (Ba,Sr)TiO3 powders with different amounts of carbon black, and by subsequently burning out the carbon black acting as a pore precursor. The microstructure, PTCR and g