chen, bochuan shi, xiaojin yuan, songmei
Helical grinding is crucial for manufacturing small holes in hard-to-machine composite ceramics. This study introduces a geometric model of undeformed chips to analyze the cutting characteristics of abrasive grains on both the bottom and side edges of the tool. It reveals for the first time that the distribution of cutting grains—pure bottom-edge, ...
sekulić, dalibor l. ivetić, tamara b.
In this study, we report on the room-temperature characteristics of an impedance-type humidity sensor based on porous tin oxide/titanium oxide (SnO2/TiO2) composite ceramics modified with Mo and Zn. The SnO2/TiO2-based composites synthesized in the solid-state processing technique have been structurally characterized using X-ray diffraction, scanni...
堀口, 勝三 森山, 実
TiSi2 and WSi2 ceramics have high electrical conductivity and good oxidation resistance. The composite ceramics of them were sintered by hot-pressing method at 1170-1670℃×40min under mold-pressure of 28.3MPa in Ar atmospher. Their properties were examined in the TiSi2-WSi2 system with compositional change of 0.2mol step. As a result, the ceramics s...
堀口, 勝三 森山, 実
Using 3YZ(ZrO2/3mol%Y2O3) and pure TiB2 powders, 3YZ-TiB2 composite ceramic system (composition change in 20mol% steps) was hot-pressed in an Ar atmosphere at a temperature of 1500-1950℃ for 1 hour with a mold pressure of 28.3 MPa. The mechanical and electrical properties revealed the following. The fabricated 3YZ-TiB2 composites were highly densif...
kozlovskiy;, artem
Composite oxide ceramics CeZrO4–YZrO3 obtained by mechanochemical synthesis were chosen as objects of study. The most dangerous type of radiation defect in structural materials is associated with helium accumulation in the structure of the near-surface layer. This can lead to the destruction and swelling of the material, resulting in a decrease in ...
hyun;, ho oh da-eun
This work aims to fabricate a large-area ceramic substrate for the application of probe cards. Mullite (M) and cordierite (C), which both have a low thermal expansion coefficient, excellent resistance to thermal shock, and high durability, were selected as starting powders. The mullite–cordierite composites were produced through different compositi...
berguzinov;, askhat
The aim of this work is to study the properties of nanostructured (1 − x)ZrO2 − xCeO2 composite ceramics, depending on the content of oxide components, as well as to establish the relationship between the phase composition of ceramics and strength properties. The choice of (1− x)ZrO2 − xCeO2 composite ceramics as objects of study is due to the grea...
yinchao, ju xiaoyong, liu qin, wang weigang, zhang wei, xi
Ultra-high temperature composite ceramic matrix composites ZrC-SiC, ZrB2-ZrC-SiC and HfB2-HfC-SiC were fabricated by precursor infiltration and pyrolysis method. The ultra-high temperature ceramic phases in the materials were characterized by submicron/ nanometer uniform dispersion distribution. Ablation behaviors of ZrC-SiC, ZrB2-ZrC-SiC and HfB2-...
yinchao, ju xiaoyong, liu qin, wang weigang, zhang wei, xi
Ultra-high temperature composite ceramic matrix composites ZrC-SiC, ZrB2-ZrC-SiC and HfB2-HfC-SiC were fabricated by precursor infiltration and pyrolysis method. The ultra-high temperature ceramic phases in the materials were characterized by submicron/ nanometer uniform dispersion distribution. Ablation behaviors of ZrC-SiC, ZrB2-ZrC-SiC and HfB2-...
wei-cheng zhao, yuan-chang liang;
Disk- and filament-like ZnO crystals were decorated on one-dimensional TiO2 nanostructures (TiO2–ZnO) through various integrated physical and chemical synthesis methods. The morphology of the ZnO crystals on TiO2 varied with the chemical synthesis method used. ZnO nanodisks decorated with TiO2 nanorods (TiO2–ZnO–C) were synthesized using the chemic...
