Preparation and Properties of Li2Zn3Ti4O12-Based Ceramics with a Sintering Aid in the Li2O–B2O3–SiO2 System for LTCC Technology

2021 ◽  
Vol 57 (9) ◽  
pp. 929-936
Author(s):  
D. I. Vershinin ◽  
I. N. Khusainov ◽  
N. A. Makarov
Keyword(s):  
Sintering Aid ◽  
Sio2 System

Microstructural examination of modified yttria stabilized zirconia by EM analytical techniques

1986 ◽  
Vol 44 ◽  
pp. 842-843
Author(s):  
W. W. Davison ◽  
R. C. Buchanan
Keyword(s):  
Mechanical Properties ◽  
Analytical Techniques ◽  
Yttria Stabilized Zirconia ◽  
Stabilized Zirconia ◽  
Transmission Microscopy ◽  
Sintering Aid ◽  
Densification Temperature ◽  
Chemical Inertness ◽  
Scanning Transmission ◽  
Microstructural Examination

Yttria stabilized zirconia (YSZ) has become a significant technological material due to its high ionic conductivity, chemical inertness, and good mechanical properties. Temperatures on the order of 1700°C are required, however, to densify YSZ to the degree necessary for good electrical and mechanical properties. A technique for lowering the densification temperature is the addition of small amounts of material which facilitate the formation of a liquid phase at comparatively low temperatures. In this study, sintered microstructures obtained from the use of Al2O3 as a sintering aid were examined with scanning, transmission, and scanning transmission microscopy (SEM, TEM, and STEM).

Mechanical Properties of Zirconia Toughened Alumina Composites with TZP Partially Nanostructured Sintered by Liquid Fase

2008 ◽  
Vol 591-593 ◽  
pp. 436-440
Author(s):  
João Marcos K. Assis ◽  
Francisco Piorino Neto ◽  
Francisco Cristóvão Lourenço de Melo ◽  
Maria do Carmo de Andrade Nono
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Weibull Modulus ◽  
Bending Test ◽  
Sintering Aid ◽  
Zirconia Composites ◽  
Alumina Composites ◽  
Grain Size And Shape ◽  
Zirconia Toughened Alumina ◽  
Zirconia Powders

A comparative study between alumina added niobia ceramics and two alumina zirconia composites from nanostructured TZP (7% and 14% weight) was made. On this composites the zirconia were yttria stabilized and the alumina were submicron structured. As sintering aid a mixture of magnesia, niobia and talc were used on all samples. The sintering was performed at 1450 oC during 60 minutes. The characteristic grain size and shape of an alumina and zirconia powders, aggregates and agglomerates were characterized. The sintering ceramics were evaluated through hardness, fracture toughness and 4 point bending test. Weibull statistic was applied on the flexural results. Although the fracture toughness result from ZTA were lower, and seems to be affected by the liquid fase, the hardness and Weibull modulus were higher than alumina niobia. The grains size and the homogeneity of its distributions on the microstructure of this ceramics was correlated to these higher values. The results from these alumina zirconia composites showed a potential to apply as a ballistic armor material.

scholarly journals Effects of NiO addition on sintering and proton uptake of Ba(Zr,Ce,Y)O3-δ

2021 ◽  
Author(s):  
Yuanye Huang ◽  
Rotraut Merkle ◽  
Joachim Maier
Keyword(s):  
Solid State ◽  
Complex Nature ◽  
Reactive Sintering ◽  
Sintering Aid ◽  
Proton Conducting ◽  
Proton Uptake ◽  
Sintering Method

The effects of 0.125-0.2 wt% NiO added as sintering aid for highly refractory Ba(Zr,Ce,Y)O3-δ proton conducting ceramics are investigated. The complex nature of the solid state reactive sintering method shows...

Preparation and In Vitro Behavior of Bioactive Glasses from Bovine Waste Resource

2006 ◽  
Vol 309-311 ◽  
pp. 329-332
Author(s):  
S.H. Ahn ◽  
Yong Nam Kim ◽  
Hyun Gyu Shin ◽  
Hee Soo Lee ◽  
Jong Hee Hwang ◽  
...  
Keyword(s):  
High Purity ◽  
Alternative Strategy ◽  
Biological Resource ◽  
Bioactive Glasses ◽  
Sio2 System ◽  
Functional Applications

Preparation of bioactive glasses was attempted utilizing waste bovine as raw resource. Bioactive and biodegradable batch compositions in the Na2O-CaO-SiO2 system were included with calcined bovine, whose phase was high-purity oxy-hydroxyapatite. Bovine inclusion as large as 40 mass% was shown to present highly bioactive glasses; bovine in the bioactive and biodegradable compositions presented glasses with controlled bioactivity and biodegradability, respectively. These indicate not only a plenty biological resource of bio-interactive materials, but also an alternative strategy for bioactive glasses with multi-functional applications.

Study on the NaNp/Al2O3–SiO2 system

2005 ◽  
Vol 292 (1) ◽  
pp. 152-159 ◽  
Author(s):  
Paweł Maksimowski ◽  
Wincenty Skupiński
Keyword(s):  
Sio2 System
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