Effect of Ar Gas Pressure on Phase Separation of Tungsten Silicides Intermetallic Compound In Situ Self-Propagating High Temperature Synthesis-Casting Process

2012 ◽  
Vol 626 ◽  
pp. 143-146 ◽  
Author(s):  
Tawat Chanadee ◽  
Sutham Niyomwas ◽  
Jessada Wannasin
Keyword(s):  
Phase Separation ◽  
High Temperature ◽  
Intermetallic Compound ◽  
Gas Pressure ◽  
Oxide Ceramic ◽  
Temperature Synthesis ◽  
High Temperature Synthesis ◽  
Ar Gas ◽  
Tungsten Silicides

Tungsten silicides intermetallic compound (WSi2) was synthesized in-situ by self-propagating high temperature synthesis-casting of WO3-Si-Al system in Ar gas environment. It is proposed that the extent of phase separation between oxide ceramic and intermetallic compound depends on the reaction temperature that made a lower viscosity and longer lifetime of the melted. The effects of inert gas pressure on densification of the intemetallic product were investigated.

Influence of Ar Pressure on Product Characteristics of Self-Propagating High-Temperature Synthesis from WO3/B2O3/Al Reactant System

2013 ◽  
Vol 748 ◽  
pp. 32-35 ◽  
Author(s):  
Tawat Chanadee ◽  
Jessada Wannasin ◽  
Sutham Niyomwas
Keyword(s):  
Phase Separation ◽  
High Temperature ◽  
Gas Pressure ◽  
Reaction Products ◽  
Product Characteristics ◽  
Temperature Synthesis ◽  
High Temperature Synthesis ◽  
Ar Gas

nfluence of Ar gas pressure on the SHS reaction products from WO3/B2O3/Al system has been investigated. The pressure of Ar gas has a significant effect on the phase separation and microstructures of SHS products. Increase in Ar gas pressure has a effect on the phase compositions of SHS products and results in the increase of the amount of W2B. Furthermore, the crystalize sizes of W2B increase with the increase of Ar gas pressure from 0.3 to 0.5 MPa, respectively.

scholarly journals One-step ultra-rapid fabrication and thermoelectric properties of Cu2Se bulk thermoelectric material

RSC Advances ◽  
2019 ◽  
Vol 9 (19) ◽  
pp. 10508-10519 ◽  
Author(s):  
Tiezheng Hu ◽  
Yonggao Yan ◽  
Si Wang ◽  
Xianli Su ◽  
Wei Liu ◽  
...  
Keyword(s):  
High Temperature ◽  
Thermoelectric Properties ◽  
Single Phase ◽  
Temperature Synthesis ◽  
High Temperature Synthesis ◽  
Thermoelectric Energy ◽  
Rapid Fabrication ◽  
One Step ◽  
First Time

Cu2Se is a promising material for thermoelectric energy conversion. Fully dense single-phase bulk Cu2Se was prepared by the combination of self-propagating high-temperature synthesis with in situ quick pressing for the first time.

Self-Propagating High-Temperature Synthesis of Si-SiC Composite Powder

2016 ◽  
Vol 675-676 ◽  
pp. 623-626 ◽  
Author(s):  
Tawat Chanadee ◽  
Sutham Niyomwas
Keyword(s):  
High Temperature ◽  
Composite Powder ◽  
Rice Husk Ash ◽  
Argon Atmosphere ◽  
Composite Powders ◽  
Temperature Synthesis ◽  
X Ray ◽  
High Temperature Synthesis ◽  
Silicon Silicon

Silicon-silicon carbide (Si-SiC) composite powders were synthesized by in-situ self- propagating high-temperature synthesis using rice husk ash (RHA)/carbon/Mg as precursors in argon atmosphere. The as-SHS powders were leached by two leaching steps. The microstructure and chemical composition of the obtained Si-SiC composite powders were examined using scanning electron microscope (SEM) and x-ray diffractometer (XRD), respectively.

scholarly journals In Situ, Fast, High-Temperature Synthesis of Nickel Nanoparticles in Reduced Graphene Oxide Matrix

2017 ◽  
Vol 7 (11) ◽  
pp. 1601783 ◽  
Author(s):  
Yiju Li ◽  
Yanan Chen ◽  
Anmin Nie ◽  
Aijiang Lu ◽  
Rohit Jiji Jacob ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
High Temperature ◽  
Reduced Graphene Oxide ◽  
Nickel Nanoparticles ◽  
Temperature Synthesis ◽  
High Temperature Synthesis ◽  
Reduced Graphene ◽  
Oxide Matrix

Microstructure and Mechanical Properties of Mg-Based Composites Reinforced with TiB2 Particles

2014 ◽  
Vol 900 ◽  
pp. 141-145 ◽  
Author(s):  
Can Feng Fang ◽  
Guang Xu Liu ◽  
Ling Gang Meng ◽  
Xing Guo Zhang
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Composite Material ◽  
High Temperature ◽  
The Self ◽  
Al Alloy ◽  
Temperature Synthesis ◽  
Microstructure And Mechanical Properties ◽  
High Temperature Synthesis

The effects of in-situ TiB2 particle fabricated from Al-Ti-B system via the self-propagating high-temperature synthesis (SHS) reaction technology on microstructure and mechanical properties of Mg-Sn-Zn-Al alloy were investigated. The results indicate that the size of the Mg2Sn and α-Mg+Mg32(Al,Zn)49 phase becomes coarser with the increasing content of Al-Ti-B preform, meanwhile the amount of eutectic α-Mg+Mg32(Al,Zn)49 phase increases too. The addition of Al-Ti-B is favorable toward promoting the strength of composites, but deteriorates elongation. The resulting as-extruded composite material with 4 wt.% Al-Ti-B preform exhibits good overall mechanical properties with an ultimate tensile strength of 291 MPa and an elongation over 2 %.

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