Results 261 to 270 of about 85,615 (303)

AlN ceramics prepared by high-pressure sintering with La2O3 as a sintering aid

Journal of Alloys and Compounds, 2008
Abstract Aluminum nitride ceramics with La 2 O 3 as a sintering aid were obtained under high pressure (5.0 GPa) in a cubic anvil high-pressure and high-temperature apparatus. The results showed that the method could effectively lower the sintering temperature and shorten the sintering time. Under 5.0 GPa, the lowest sintering temperature was 1300 °C,
X.L. Li, H.A. Ma, Y.J. Zheng, Y. Liu, G.H. Zuo, W.Q. Liu, J.G. Li, X. Jia   +7 more
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Foam glass obtained through high‐pressure sintering

Journal of the American Ceramic Society, 2018
Abstract Foam glasses are usually prepared through a chemical approach, that is, by mixing glass powder with foaming agents, and heating the mixture to a temperature above the softening point (10 6.6  Pa s) of the glass.
Martin B. Østergaard, Rasmus R. Petersen, Jakob König, Michal Bockowski, Yuanzheng Yue   +4 more
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Sintering aluminum nitride at high pressure

Powder Metallurgy and Metal Ceramics, 1993
Sintering kinetics have been examined for finely divided aluminum nitride powder at 5 GPa pressure and at 1920, 2020, 2120, and 2220 K. Sintering this material at high pressures is based on the mechanism of plastic strain combined with postdeformation annealing.
V. B. Shipilo, T. V. Rapinchuk, N. A. Shishonok, L. L. Sukhikh, T. S. Bartnitskaya, D. S. Yakovleva   +5 more
openaire   +1 more source

High-pressure sintering of cubic boron nitride

Journal of Materials Science, 1986
Cubic boron nitride (cBN) powder was compacted at high pressure and high temperature using a solid solution of titanium carbide and titanium nitride (TiC x N1−x ) as binding material in the presence of a small amount of aluminium.
M. M. Bindal, R. K. Nayar, S. K. Singhal, Ajay Dhar, Rajeev Chopra   +4 more
openaire   +1 more source

High-pressure sintered yttria stabilized zirconia ceramics

Ceramics International, 2009
Fast densification of 8YSZ ceramics under a high pressure of 4.5 GPa was carried out at different temperatures (800, 1000, 1450 degrees C), by which a high relative density above 92% could be obtained. FT-Raman spectra indicate that the 8YSZ underwent a phase transition from partially tetragonal to partially cubic phase as temperatures increase from ...
Q. Li, Y.F. Zhang, X.F. Ma, J. Meng, X.Q. Cao   +4 more
openaire   +1 more source

High‐pressure Self‐Combustion Sintering for Ceramics

Journal of the American Ceramic Society, 1984
The high‐pressure self‐combustion sintering process can be used to synthesize and simultaneously sinter ceramics in a very short time by taking advantage of exothermic reactions under high pressure. A dense TiB 2 compact was fabricated in a few seconds by electric ignition on one end of a ...
Yoshinari Miyamoto, Mitsue Koizumi, Osamu Yamada   +2 more
openaire   +1 more source

Sintering polymer nano-crystals at high pressure

Journal of Materials Science Letters, 2001
Semicrystalline polymers, such as polyethylene (PE), polyethylene terephthalate (PET) can crystallize in solvent and molten state. Folded-chain crystals with thickness about 10–20 nm are commonly obtained. These folded-chain crystals contain much more defects in the bulk and surface.
Li Liangbin, Huang Rui, Hong Shiming
openaire   +1 more source

New silver contact pastes from high pressure sintering to low pressure sintering

3rd Electronics System Integration Technology Conference ESTC, 2010
Heraeus has developed a novel concept for silver sinter pastes. The new concept uses micro scale silver particles combined with sinter additives. The novel pastes have high sinter activity and a can be used in pressure free or less pressure bonding processes. The physical properties like shear strength at temperature above 200°C, electrical and thermal
Wolfgang Schmitt, W.C. Heraeus
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High pressure infiltration sintering of cBN–Si composites

International Journal of Refractory Metals and Hard Materials, 2015
Abstract Polycrystalline cubic boron nitride (PcBN) compacts with high hardness, high thermal stability and high cutting performance have been prepared through method of high pressure infiltration of silicon melt. The scanning electron microscopy (SEM) and metallographic observations indicates that cBN–cBN bonding appeared extensively in the sintered
Yinjuan Liu, Duanwei He, Li Lei, Xiaofang Chen, Chao Xu, Pei Wang, Fangming Liu, Yu Zhang, Yi Hu   +8 more
openaire   +1 more source