Substitution of pure Y2O3 by a mixed concentrate of rare earth oxides (CRE2O3) as sintering additive of Si3N4: a comparative study of the mechanical properties

2003 ◽  
Vol 142 (3) ◽  
pp. 697-701 ◽  
Author(s):  
C Santos ◽  
S Ribeiro ◽  
K Strecker ◽  
C.R.M da Silva
Keyword(s):  
Mechanical Properties ◽  
Rare Earth ◽  
Comparative Study ◽  
Rare Earth Oxides ◽  
Sintering Additive

Effect of rare earth oxides addition on the mechanical properties and coloration of silicon nitride ceramics

2020 ◽  
Vol 40 (4) ◽  
pp. 1132-1138 ◽  
Author(s):  
Ning Liu ◽  
Jingxian Zhang ◽  
Yusen Duan ◽  
Xingbang Li ◽  
Shaoming Dong
Keyword(s):  
Mechanical Properties ◽  
Rare Earth ◽  
Silicon Nitride ◽  
Rare Earth Oxides ◽  
Nitride Ceramics

Mechanical Properties of Some Rare Earth Oxides

2011 ◽  
Author(s):  
Vipul Srivastava ◽  
Sanjay Bhajanker ◽  
Sankar P. Sanyal ◽  
Alka B. Garg ◽  
R. Mittal ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Rare Earth ◽  
Rare Earth Oxides

Effects of Rare Earth Oxides on Microstructures and Properties of Magnesia Refractories

2008 ◽  
Vol 368-372 ◽  
pp. 1158-1160 ◽  
Author(s):  
Bao Guo Zhang ◽  
Zhou Fu Wang ◽  
Shao Wei Zhang ◽  
Xi Tang Wang ◽  
Zi Wei Xu
Keyword(s):  
Mechanical Properties ◽  
Solid Solution ◽  
Rare Earth ◽  
High Temperature ◽  
Mechanical Strength ◽  
Grain Boundaries ◽  
Bulk Density ◽  
Rare Earth Oxide ◽  
Rare Earth Oxides ◽  
Microstructure And Mechanical Properties

The effects of Y2O3, La2O3 and Nd2O3 on the sintering, microstructure and mechanical properties of magnesia refractories were investigated. Addition of rare earth oxide (ReO) to magnesia refractories increases the bulk density, decreases the porosity and improves the mechanical strength of the refractories. The improved sinterability was attributable to the vacancies generation associated with the solid-solution reactions between MgO and ReO. In the samples with ReO, rare earth silicate phases form at magnesia grain boundaries, providing additional bonding between magnesia grains and between magnesia grains and matrix. Consequently, the samples with ReO showed much higher high temperature strengths than those without ReO.

Welding Performance of Tungsten Electrodes with Different Contents of Rare Earth Oxides

2015 ◽  
Vol 814 ◽  
pp. 631-635
Author(s):  
Yan Li ◽  
Jian Can Yang ◽  
Zhen Liu
Keyword(s):  
Mechanical Properties ◽  
Rare Earth ◽  
Welded Joints ◽  
Characteristic Curve ◽  
Static Characteristic ◽  
Rare Earth Oxides ◽  
Inert Gas ◽  
Aluminum Plate ◽  
Tungsten Electrode ◽  
Tungsten Electrodes

In this paper, the influence of different contents of rare earth oxides of tungsten electrodes on the welding performance has been studied. Tungsten inert gas weld was carried out on 1060 aluminum plate, using different contents of rare earth oxides of tungsten electrodes. The content of CeO2 are 2% and 4%, the content of composite rare earth oxides (La2O3: CeO2: Y2O3 = 1:1:3) is 4%. The mechanical properties of these welded joints were investigated. The results indicated that the loss of the CeO2 content of 4% electrode weight was the maximum. The arc stability of the three kinds of tungsten electrodes was good. The arc static characteristic curve of the composite rare earth—tungsten electrode was lower than that of the cerium—tungsten electrode. The loss of rare earth oxides of electrode had little effect on the mechanical properties of welded joints.

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