Optical and mechanical properties of transparent alumina fabricated by high-pressure spark plasma sintering

2019 ◽  
Vol 39 (8) ◽  
pp. 2712-2719 ◽  
Author(s):  
Barak Ratzker ◽  
Avital Wagner ◽  
Maxim Sokol ◽  
Sergey Kalabukhov ◽  
Moshe P. Dariel ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
High Pressure ◽  
Spark Plasma Sintering ◽  
Transparent Alumina ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Optical And Mechanical Properties

scholarly journals Effect of spark plasma sintering and high-pressure torsion on the microstructural and mechanical properties of a Cu–SiC composite

2019 ◽  
Vol 766 ◽  
pp. 138350
Author(s):  
P. Bazarnik ◽  
S. Nosewicz ◽  
B. Romelczyk-Baishya ◽  
M. Chmielewski ◽  
A. Strojny Nędza ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
High Pressure ◽  
Spark Plasma Sintering ◽  
High Pressure Torsion ◽  
Plasma Sintering ◽  
Spark Plasma

scholarly journals High-pressure spark plasma sintering of MgO-doped transparent alumina

2012 ◽  
Vol 120 (1399) ◽  
pp. 116-118 ◽  
Author(s):  
Byung-Nam KIM ◽  
Keijiro HIRAGA ◽  
Salvatore GRASSO ◽  
Koji MORITA ◽  
Hidehiro YOSHIDA ◽  
...  
Keyword(s):  
High Pressure ◽  
Spark Plasma Sintering ◽  
Transparent Alumina ◽  
Plasma Sintering ◽  
Spark Plasma

Influence of Spark Plasma Sintering Conditions on the Optical and Mechanical Properties of Spinel

2020 ◽  
Vol 20 (11) ◽  
pp. 6821-6826
Author(s):  
Seok-Young Ko ◽  
Kisu Lee ◽  
Doo Hyun Choi ◽  
Seok-Min Yong ◽  
Dong-Ik Cheong
Keyword(s):  
Mechanical Properties ◽  
Heating Rate ◽  
Spark Plasma Sintering ◽  
Thermal Conditions ◽  
Mechanical Degradation ◽  
Infrared Transmittance ◽  
Plasma Sintering ◽  
Military Systems ◽  
Spark Plasma ◽  
Optical And Mechanical Properties

The influence of spark plasma sintering (SPS) conditions on the optical and mechanical properties of MgAl2O4 spinel was investigated for application to infrared windows as parts of military systems. The thermal conditions of SPS, including the temperature and heating rate, have a significant impact on optical and mechanical properties. This study shows that the formation and growth of abnormal grains cause mechanical degradation with an increasing SPS temperature. In-line transmittance (Tin) was affected by the heating rate due to changes in oxygen vacancy and carbon contamination in SPSed samples. The fabricated spinel exhibited excellent flexural strength of 401 MPa and an average mid-infrared transmittance of 84.8% in the range of 3–5 μm.

Transparent Hydroxyapatite Obtained through Spark Plasma Sintering: Optical and Mechanical Properties

2014 ◽  
Vol 631 ◽  
pp. 51-56 ◽  
Author(s):  
Zhong Li ◽  
Khiam Aik Khor
Keyword(s):  
Mechanical Properties ◽  
Spark Plasma Sintering ◽  
Visible Spectrum ◽  
Plasma Sintering ◽  
Cell Tissue ◽  
Long Duration ◽  
Different Types ◽  
Spark Plasma ◽  
Biomedical Field ◽  
Optical And Mechanical Properties

Transparent bioceramics have great potential for applications in the biomedical field as they facilitate direct observation of the interactions at biomaterial – cell / tissue interfaces. Thus far, sintering of transparent hydroxyapatite (HA) usually involves application of extraordinarily high pressure and / or long duration. This study attempts to fabricate transparent HA by a direct and fast Spark Plasma Sintering (SPS) process using three different types of raw powder: micro-spheres (MS), nanorods (NR) and nanospheres (NS). The optical and mechanical properties of the sintered pellets were examined and compared. The highest total forward transmittance (TFT) showed by sintered MS pellet (~2 mm thick) was 85% in the visible spectrum, whereas sintered NR and NS pellets were either translucent or opaque. Although lowest degree of transparency was observed for NS pellets, they demonstrated highest Young’s modulus (E), hardness (H) and fracture toughness (KIC). The eminent KIC of NS pellets benefited mainly from its self-toughened microstructure.

scholarly journals Preparation of TiAl15Si15 alloy by High Pressure Spark Plasma Sintering

2018 ◽  
Vol 24 (2) ◽  
pp. 174
Author(s):  
Anna Knaislová ◽  
Pavel Novák ◽  
Filip Průša ◽  
Sławomir Cygan ◽  
Lucyna Jaworska
Keyword(s):  
Mechanical Properties ◽  
High Pressure ◽  
Powder Metallurgy ◽  
Spark Plasma Sintering ◽  
Elevated Temperatures ◽  
Reactive Sintering ◽  
Compact Sample ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Sintering Method

<p class="AMSmaintext"><span lang="EN-GB">This work deals with preparation of intermetallic alloy TiAl15Si15 (wt. %) by powder metallurgy using Spark Plasma Sintering method. Ti-Al-Si alloys are known as materials with low density, relatively good mechanical properties in comparison with their density and good oxidation and corrosion resistance at elevated temperatures. Preparation of intermetallics by melting metallurgy is very problematic. Powder metallurgy using reactive sintering followed by suitable compaction seems to be a promising method. In this work, TiAl15Si15 alloy was prepared by reactive sintering, milling and by unique ultra-high pressure Spark Plasma Sintering within the framework of international cooperation in Krakow. For the comparison it was also prepared by conventional Spark Plasma Sintering. The results show that higher pressure of sintering decreases the porosity of compact sample and increases mechanical properties, especially hardness.</span></p>

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