scholarly journals Polymorphism of nanocrystalline TiO2 prepared in a stagnation flame: formation of the TiO2-II phase

2019 ◽  
Vol 10 (5) ◽  
pp. 1342-1350 ◽  
Author(s):  
Manoel Y. Manuputty ◽  
Jochen A. H. Dreyer ◽  
Yuan Sheng ◽  
Eric J. Bringley ◽  
Maria L. Botero ◽  
...  
Keyword(s):  
Phase Formation ◽  
Formation Mechanism ◽  
Nanocrystalline Tio2 ◽  
Phase Formation Mechanism

Flame-made TiO2 nanoparticles with tunable polymorphs, including the metastable TiO2-II phase, were prepared and a phase formation mechanism was proposed.

Phase formation mechanism and characteristics of strontium barium niobate ceramics

2007 ◽  
Vol 27 (2-3) ◽  
pp. 517-521
Author(s):  
Adelina Ianculescu ◽  
Ana Brăileanu ◽  
Georgeta Voicu ◽  
Ştefania Stoleriu
Keyword(s):  
Phase Formation ◽  
Formation Mechanism ◽  
Strontium Barium Niobate ◽  
Strontium Barium ◽  
Phase Formation Mechanism

Vacancy-mediated ω-assisted α-phase formation mechanism in titanium–molybdenum alloy

2015 ◽  
Vol 83 ◽  
pp. 499-506 ◽  
Author(s):  
Sung-Hwan Kim ◽  
Sung Jin Kang ◽  
Min-Ho Park ◽  
Cheol-Woong Yang ◽  
Hu-Chul Lee ◽  
...  
Keyword(s):  
Phase Formation ◽  
Formation Mechanism ◽  
Molybdenum Alloy ◽  
Α Phase ◽  
Phase Formation Mechanism

scholarly journals COMPREHENSIVE INVESTIGATION OF PHASE FORMATION MECHANISM AND PHYSICO-MECHANICAL PROPERTIES OF Ca-Mg-SILICATE

2021 ◽  
Vol 11 (2) ◽  
pp. 37-50
Author(s):  
Myat Myat-Htun ◽  
Hossein Mohammadi ◽  
Ahmad-Fauzi Mohd Noor ◽  
Masakazu Kawashita ◽  
Yanny Marliana Baba Ismail
Keyword(s):  
Mechanical Properties ◽  
Phase Formation ◽  
Formation Mechanism ◽  
Heat Treating ◽  
Xrd Analysis ◽  
High Energy ◽  
X Ray Diffraction ◽  
Phase Development ◽  
Milling Method ◽  
Phase Formation Mechanism

This study aimed to investigate extensively the full phase formation mechanism from the lowest temperature to form the phases to the optimum temperature to crystallize akermanite. The effects of various milling speeds and sintering temperatures on physico-mechanical properties of akermanite prepared using high-energy planetary milling method were also investigated. The minimum formation temperature of akermanite phase (above 800°C) was determined by X-Ray diffraction (XRD) and differential thermal analysis. XRD analysis revealed akermanite had formed through gradual phase development with the increase in temperature. Below 700C, akermanite was structurally unstable while multiple transient compounds (low clinoenstatite, wollastonite, monticellite, and diopside) coexisted, as indicated by low peak intensities. Single phase akermanite was obtained by heat-treating at 1100C. Physical studies suggested the densest akermanite ceramic feature, with tensile strength range of 25.26 ± 1.41 MPa32.10 ± 2.13 MPa and Vickers microhardness range of 1.39 ± 0.04 GPa4.94 ± 0.26 GPa could be obtained at 1250°C.

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