(Y1-xNdx)3Zr5O14.5 solid solutions as inert matrices: Phase evolution, order-disorder dynamics and thermophysical behavior

2021 ◽  
Vol 27 ◽  
pp. 102158
Author(s):  
Koushik Bhandari ◽  
V. Grover ◽  
Anushree Roy ◽  
Ranu Bhatt ◽  
Joydipta Banerjee ◽  
...  
Keyword(s):  
Solid Solutions ◽  
Phase Evolution ◽  
Inert Matrices

Mechanical Performance, Phase Evolution and Microstructure of Natural Feldspathic Solid Solutions Consolidated Via Alkali Activation: Effect of NaOH Concentration

Silicon ◽  
2021 ◽  
Author(s):  
Achile Nana ◽  
Sylvain Tomé ◽  
Sybilline Claudelle Djadock Anensong ◽  
Paul Venyite ◽  
Jean Noel Yankwa Djobo ◽  
...  
Keyword(s):  
Solid Solutions ◽  
Mechanical Performance ◽  
Phase Evolution ◽  
Alkali Activation ◽  
Activation Effect

scholarly journals Preparation and Sintering Behaviour of a Fine Grain BaTiO3 Powder containing 10 mol% BaGeO3

2018 ◽  
Author(s):  
Roberto Köferstein
Keyword(s):  
Dielectric Constant ◽  
Specific Surface ◽  
Solid Solutions ◽  
Relative Permittivity ◽  
Phase Evolution ◽  
Batio3 Powder ◽  
Fine Grain ◽  
Rate Controlled ◽  
Sintering Behaviour ◽  
Powder Compacts

The formation of solid solutions of the type [Ba(HOC2H4OH)4][Ti1-xGex(OC2H4O)3] as Ba(Ti1-x/Gex)O3 precursors and the phase evolution during thermaldecomposition of [Ba(HOC2H4OH)4][Ti0.9Ge0.1(OC2H4O)3] (1) are described herein. The 1,2-ethanediolato complex 1 decomposes above 589 °C to a mixture of BaTiO3 and BaGeO3. Aheating rate controlled calcination procedure up to 730 °C leads to a nm-sizedBa(Ti0.9/Ge0.1)O3 powder (1a) with a specific surface area of S = 16.9 m2/g, whereas aconstant heating rate calcination at 1000 °C for 2 h yields a powder (1b) of S = 3.0 m2/g. Theshrinkage and sintering behaviour of the resulting Ba(Ti0.9/Ge0.1)O3 powder compacts incomparison with nm-sized BaTiO3 powder compacts (2a) has been investigated. A 2-stepsintering procedure of nm-sized Ba(Ti0.9/Ge0.1)O3 compacts (1a) leads below 900 °C toceramic bodies with a relative density of ³ 90 %. Furthermore, the cubic ? tetragonal phasetransition temperature has been detected by dilatometry and the temperature dependence ofthe dielectric constant (relative permittivity) has also been measured.

Phase transformation in equimolecular mixture of HfC-ZrC-TiC-NbC carbides

2021 ◽  
pp. 18-23
Author(s):  
D. Wang ◽  
◽  
Yu.A. Mirovoy ◽  
A.G. Burlachenko ◽  
A.S. Buyakov ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Solid Solution ◽  
Phase Transformation ◽  
Solid Solutions ◽  
Powder Mixture ◽  
Phase Evolution ◽  
Host Material ◽  
Temperature Range

The phase evolution during sintering under pressure in the temperature range from 1400 to 1900 oC of equimolar powder mixture NbC-HfC-TiC-ZrC was investigated. It is established that monophase solid solution of (Hf, Zr, Ti, Nb)C substitution was formed at 1700 oC. From these experiments it was determined that HfC tends to act as the host material. It is shown that formation of (Hf, Zr, Ti, Nb)C solid solution proceeded multistage with formation of intermediate two- and three-component ceramic (Hf, Zr)C, (Nb, Zr)C, (Hf, Zr, Ti)C solid solutions and their subsequent dissolution. The (Hf, Zr, Ti, Nb)C solid solutions has improved mechanical properties as compared to similar properties of the original carbides: E = (616±77) GPa, H = (36±8) GPa, K1C = (3.4±0.5) MPa∙m1/2.

scholarly journals Mechanical Alloying of Optimized Mg2(Si,Sn) Solid Solutions: Understanding Phase Evolution and Tuning Synthesis Parameters for Thermoelectric Applications

2018 ◽  
Vol 1 (2) ◽  
pp. 531-542 ◽  
Author(s):  
Aryan Sankhla ◽  
Akash Patil ◽  
Hasbuna Kamila ◽  
Mohammad Yasseri ◽  
Nader Farahi ◽  
...  
Keyword(s):  
Mechanical Alloying ◽  
Solid Solutions ◽  
Phase Evolution ◽  
Synthesis Parameters

Phase evolution and magnetoelectric coupling studies in multiferroic Fe doped BST solid solutions

2021 ◽  
Vol 127 (8) ◽  
Author(s):  
Aanchal Chawla ◽  
Swati Verma ◽  
Ishita Pushkarna ◽  
P. S. Malhi ◽  
Anupinder Singh ◽  
...  
Keyword(s):  
Solid Solutions ◽  
Phase Evolution ◽  
Magnetoelectric Coupling

scholarly journals Phase evolution in (1−x)(Na0.5Bi0.5)TiO3-xSrTiO3 solid solutions: A study focusing on dielectric and ferroelectric characteristics

2020 ◽  
Vol 6 (4) ◽  
pp. 677-691 ◽  
Author(s):  
Gang Liu ◽  
Jia Dong ◽  
Leiyang Zhang ◽  
Yan Yan ◽  
Ruiyi Jing ◽  
...  
Keyword(s):  
Solid Solutions ◽  
Phase Evolution

Effects of ionic radius on phase evolution in Ln-Al co-doped Ca1-xLnxZrTi2-xAlxO7 (Ln = La, Nd, Gd, Ho, Yb) solid solutions

2018 ◽  
Vol 44 (13) ◽  
pp. 15124-15132 ◽  
Author(s):  
Shengshou Ma ◽  
Shiyin Ji ◽  
Changzhong Liao ◽  
Chengshuai Liu ◽  
Kaimin Shih ◽  
...  
Keyword(s):  
Solid Solutions ◽  
Ionic Radius ◽  
Phase Evolution ◽  
Co Doped
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