Enhanced Ferroelectric Phase Stability and High Temperature Piezoelectricity in PN Ceramics via Multisite Co-Doping

2015 ◽  
Vol 98 (10) ◽  
pp. 3165-3172 ◽  
Author(s):  
Kai Cai ◽  
Feng Jiang ◽  
Pingye Deng ◽  
Jingtao Ma ◽  
Dong Guo
Keyword(s):  
High Temperature ◽  
Phase Stability ◽  
Ferroelectric Phase ◽  
Co Doping

Synthesis of N-type semiconductor diamonds with sulfur, boron co-doping in FeNiMnCo-C system at high pressure and high temperature

2017 ◽  
Vol 26 (5) ◽  
pp. 058102 ◽  
Author(s):  
He Zhang ◽  
Shangsheng Li ◽  
Taichao Su ◽  
Meihua Hu ◽  
Hongan Ma ◽  
...  
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Co Doping ◽  
Type Semiconductor

A Review on High Temperature Stable Anatase TiO2 Photocatalysts

2016 ◽  
Vol 855 ◽  
pp. 78-93 ◽  
Author(s):  
Pradeepan Periyat ◽  
Binu Naufal ◽  
Sanjay Gopal Ullattil
Keyword(s):  
High Temperature ◽  
Metal Ions ◽  
Photocatalytic Performance ◽  
Anatase Phase ◽  
Co Doping ◽  
Phase Stabilization ◽  
Antibacterial Coatings ◽  
Recent Developments ◽  
Self Cleaning

This review focuses on the recent developments of high temperature stable anatase TiO2 photocatalyst. Eventhough TiO2 exists in different forms anatase, rutile and brookite, anatase phase stabilization is often the key to obtain the highest photocatalytic performance for TiO2, particularly for the use as an antibacterial and self-cleaning coatings in high temperature processed ceramics. Different methods available for the anatase stabilization in literature are critically reviewed and emphasis is placed on relatively recent developments. Currently available methods of anatase stabilizations are classified in to four categories viz (i) doping with metal ions (ii) doping with non-metal ions (iii) co-doping with metal and non-metal ions and (iv) dopant free stabilization by oxygen richness. Further to this, the application of these high temperature stabilized anatase TiO2 photocatalyst on various ceramics substrates such as tile, glass and sanitary wares as self-cleaning and antibacterial coatings are also been briefly discussed.

Textural and phase stability of CexZr1−xO2 mixed oxides under high temperature oxidising conditions

1999 ◽  
Vol 50 (2) ◽  
pp. 271-284 ◽  
Author(s):  
G Colón ◽  
F Valdivieso ◽  
M Pijolat ◽  
R.T Baker ◽  
J.J Calvino ◽  
...  
Keyword(s):  
High Temperature ◽  
Phase Stability ◽  
Mixed Oxides

Crystal structure, chemical expansion and phase stability of HoMnO3 at high temperature

2012 ◽  
Vol 196 ◽  
pp. 528-535 ◽  
Author(s):  
Sverre M. Selbach ◽  
Amund Nordli Løvik ◽  
Kristin Bergum ◽  
Julian R. Tolchard ◽  
Mari-Ann Einarsrud ◽  
...  
Keyword(s):  
Crystal Structure ◽  
High Temperature ◽  
Phase Stability ◽  
Chemical Expansion

A Cooperative Afterglow Enhancement in Second Biological Window of Na2CaSn2Ge3O12 with Co-doping of Pr3+-Yb3+

2021 ◽  
Author(s):  
Xiuping Gao ◽  
Tao Liu ◽  
Xiaohui Jiang ◽  
Kai Huang ◽  
Runlin Liu ◽  
...  
Keyword(s):  
High Temperature ◽  
Solid State ◽  
Solid State Reaction ◽  
Near Infrared ◽  
Co Doping

A novel near-infrared persistent luminescent phosphor Na2CaSn2Ge3O12 (NCSGO) doped with Ho3+, Er3+, Tm3+ and Yb3+ was synthesized by high-temperature solid-state reaction. The afterglow emission bands located at 1553nm, 801nm and...

Phase Stability and High Temperature Tensile Properties of W doped gamma-TiAl

2000 ◽  
Vol 646 ◽  
Author(s):  
Keizo Hashimoto ◽  
Hirohiko Hirata ◽  
Youji Mizuhara
Keyword(s):  
High Temperature ◽  
Phase Stability ◽  
Ternary Phase ◽  
Elevated Temperatures ◽  
Ternary Phase Diagram ◽  
Arc Melting ◽  
Structural Applications ◽  
High Temperature Tensile ◽  
Promising Alloys ◽  
High Temperature Tensile Properties

ABSTRACTTungsten (W) doped γ-TiAl is one of promising alloys among many other proposed TiAl base alloys, for the purpose of structural applications at elevated temperatures. Ingots of W doped γ-TiAl were produced by plasma arc melting, followed by homogenizing heat treatment and isothermal forging to control their microstructures. The phase stability of W doped γ-TiAl has been studied quantitatively, using the specimens quenched from 1273 K. Equilibrium compositions of consisting phases were analyzed by means of EDS analysis in a TEM. An isothermal cross section of the Ti-Al-W ternary phase diagram at 1273K has been proposed based on the experimental observations. Small amounts of W addition (< 1at%) to Ti-48at%Al cause a phase shift from α2+γ to α2+β+γ, which suggests that W is the strongest β stabilizer among transition metals, such as Cr and Mo. Mechanical property measurements of W doped γ-TiAl show that the high temperature tensile strength has been improved by the W addition. Relationships between the microstructures and the mechanical properties of W doped γ-TiAl have been discussed.

Sign in / Sign up

Export Citation Format

Share Document