Results 31 to 40 of about 18,795 (238)

A Comparative Study on Luminescence Properties of Y₂O₃: Pr³⁺ Nanocrystals Prepared by Different Synthesis Methods

Nanomaterials, 2020
Pr3+-doped Y2O3 nanocrystals (NCs) have been obtained via five wet-chemistry synthesis methods which were optimized in order to achieve superior optical properties.
Andrea Diego-Rucabado, Marina T. Candela, Fernando Aguado, Jesús González, Fernando Rodríguez, Rafael Valiente, Rosa Martín-Rodríguez, Israel Cano   +7 more
doaj   +1 more source

Dimensional accuracy, mechanical property, and optical stability of zirconia orthodontic bracket according to yttria proportions

Scientific Reports, 2023
This in vitro study evaluated comprehensively the performances of zirconia brackets with varying yttria proportions in manufacturing advanced orthodontic brackets.
Changbum Park, Hai-Van Giap, Jae-Sung Kwon, Kyung-Ho Kim, Sung-Hwan Choi, Joon Sang Lee, Kee-Joon Lee   +6 more
doaj   +1 more source

Damage and microstructure evolution of yttria particle reinforced tungsten plates under laser thermal shock

Fenmo yejin jishu
Yttria particle reinforced tungsten plates with different thickness reduction were prepared by powder metallurgy technology combined with rolling process.
REN Daya, ZAN Xiang
doaj   +1 more source

Effects of Impurity Content on the Sintering Characteristics of Plasma-Sprayed Zirconia [PDF]

, 2007
Yttria-stabilized zirconia powders, containing different levels of SiO2 and Al2O3, have been plasma sprayed onto metallic substrates. The coatings were detached from their substrates and a dilatometer was used to monitor the dimensional changes they ...
Paul, S., Dorfman, M.R., Cipitria, A., Paul , S., Clyne, T., Clyne, T.W., Dorfman, M., Golosnoy, I.O., Golosnoy, I., Xie, L.   +9 more
core   +1 more source

Investigation on the Mechanical Properties of Mg-Al Alloys (AZ41 and AZ51) and Its Composites

Metals, 2012
In the present study, AZ41 and AZ51 alloys were fabricated using disintegrated melt deposition technique followed by hot extrusion. AZ41/Yttria and AZ51/Yttria composites were prepared using 0.6 wt% yttria nano particles in the alloys using the same ...
Manoj Gupta, Abdel Magid Hamouda, Quy B. Nguyen, Khin S. Tun, Ng J. Minh   +4 more
doaj   +1 more source

Nanocrystalline cubic yttria

, 1999
Nanocrystalline cubic yttria : synthesis and optical properties / K. Samwer ... - In: Chemical vapor deposition. 5. 1999. S.
Samwer, Konrad
core   +6 more sources

Crack Growth Tests in Air Plasma-Sprayed Yttria Coatings for Alumina Ceramic Matrix Composites

Ceramics, 2019
Yttria coatings for all-oxide combustor walls were tested for their crack-growth behavior. These environmental and thermal barrier Y2O3-coatings were processed by atmospheric plasma spraying (APS). The stiffness and strength were measured for as-received
Stefan Hackemann, Marion Bartsch
doaj   +1 more source

Effect of Y2O3 Nanoparticles on Corrosion Study of Spark Plasma Sintered Duplex and Ferritic Stainless Steel Samples by Linear Sweep Voltammetric Method [PDF]

Archives of Metallurgy and Materials, 2018
The microstructure and corrosion properties of spark plasma sintered yttria dispersed and yttria free duplex and ferritic stainless samples were studied. Spark plasma sintering (SPS) was carried out at 1000°C by applying 50 MPa pressure with holding time
R. Shashanka, D. Chaira, Kumara Swamy B.E.   +2 more
doaj   +1 more source

Cavitation-assisted decontamination of yttria from graphite of different densities

Ultrasonics Sonochemistry, 2021
Yttria coated graphite crucibles are widely used to handle molten refractory and radioactive metals like uranium and plutonium. However, the coated layer suffers damages like cracking and peeling off owing to thermal cycles.
S. Lahiri, D. Mandal, P.R. Gogate, A. Ghosh, R.L. Bhardwaj   +4 more
doaj   +1 more source

Controlling Grain Growth in Powder Bed Fusion of Yttria‐Stabilized Zirconia Using Femtosecond Lasers: Challenges and Methodological Insights

Advanced Engineering Materials, EarlyView.
Binder‐free laser powder bed fusion of 8YSZ with a femtosecond laser is used to map process windows linking scan strategy, heat accumulation, and grain growth. Time‐resolved thermography and simulations reveal thermal regimes that enable continuous, vitrified, and fine‐grained 8YSZ surface layers without absorptive additives and demonstrate ...
Markus Kühn, Sarah Kaden, Andrea Barz, Daniel Störzner, Jens Bliedtner, Andrés Fabián Lasagni   +5 more
wiley   +1 more source