scholarly journals Preparation of nano-scaled WC powder by low-temperature carbothermic reduction method

2022 ◽  
Vol 102 ◽  
pp. 105724
Author(s):  
Kai-Fei Wang ◽  
Xiao-Hui Yang ◽  
Kuo-Chih Chou ◽  
Guo-Hua Zhang
Keyword(s):  
Low Temperature ◽  
Carbothermic Reduction ◽  
Reduction Method

Research on Model of Solid-Solid Reaction and Experiment

2012 ◽  
Vol 236-237 ◽  
pp. 751-754
Author(s):  
Ding Guo Zhao ◽  
Shu Huan Wang ◽  
Xiao Jie Cui ◽  
He Jun Zhang
Keyword(s):  
Low Temperature ◽  
Boron Oxide ◽  
Reduction Method ◽  
Direct Reduction ◽  
Solid Model ◽  
Reaction Equation ◽  
Solid Reaction ◽  
Average Value

In the paper, the reaction of solid-solid model was researched and we confirmed the reaction equation. The experiments in the lab shown that the t1/2 is 11.8min in the ferrosilicon reduction boron anhydride reaction at low temperature. The yield of boron is higher by direct reduction method smelting. In the boron oxide reducing experiment, the yield minimum is 76%, the maximum is 82%, and the average value is about 79%, which provides favorable foundation conditions for smelting amorphous mother alloy.

Preparation of a silver nanoparticle-based dual-functional sensor using a complexation–reduction method

2015 ◽  
Vol 17 (33) ◽  
pp. 21243-21253 ◽  
Author(s):  
Fwu-Long Mi ◽  
Shao-Jung Wu ◽  
Wen-Qi Zhong ◽  
Cheng-Yu Huang
Keyword(s):  
Silver Nanoparticles ◽  
High Temperature ◽  
Low Temperature ◽  
Silver Nanoparticle ◽  
Reduction Method ◽  
Ag Nps ◽  
Two Stage ◽  
Temperature Reduction ◽  
Dual Functional

A dual-functional sensor based on silver nanoparticles was synthesized by a two-stage procedure consisting of a low-temperature chitosan–Ag+ complexation followed by a high-temperature reduction of the complex to form chitosan-capped silver nanoparticles (CS-capped Ag NPs).

Effect of Surfactant on the Morphology of Silver Nanoparticles

2007 ◽  
Vol 124-126 ◽  
pp. 1205-1208 ◽  
Author(s):  
Keun Ju Park ◽  
Dong Seok Seo ◽  
Woo Yang Jang ◽  
Jong Kook Lee
Keyword(s):  
Silver Nanoparticles ◽  
Ascorbic Acid ◽  
Low Temperature ◽  
Reduction Method ◽  
Chemical Reduction ◽  
Sodium Dodecyl ◽  
Capping Agent ◽  
Silver Particles ◽  
Chemical Reduction Method ◽  
20 Nm

Nano-sized silver particles are considered to apply a silver paste for electrode because of its high conductivity on sintering at low temperature. In this study, silver nanoparticles as seeds were prepared by chemical reduction method with capping agent. Silver particles were prepared using SDS (Sodium dodecyl sulfate) as a surfactant and silver nanoparticles as seeds and reacted with ascorbic acid as a reduction agent. The silver seeds with 10-20 nm in size with uniform distribution were formed and the size and shape of silver particles were strongly dependent on the concentration of surfactant.

Magnetocaloric Effects of Binary Rare Earth Nitrides

2007 ◽  
Vol 1040 ◽  
Author(s):  
Yusuke Hirayama ◽  
Takashi Nakagawa ◽  
Takafumi Kusunose ◽  
Takao A. Yamamoto
Keyword(s):  
Rare Earth ◽  
Carbothermic Reduction ◽  
Maxwell Equations ◽  
Magnetic Entropy Change ◽  
Reduction Method ◽  
Entropy Change ◽  
Convex Curve ◽  
Data Sets ◽  
Magnetic Entropy ◽  
Rare Earth Nitrides

AbstractWe synthesized HoxEr1−xN (x =0.1, 0.3, 0.5, 0.7, 0.9) by the carbothermic reduction method. The magnetic entropy change, ΔS, which is an indicator of performance of magnetocaloric effect, MCE, was obtained from data sets of magnetization M (H, T) measured at various temperature, T, and magnetic field, H, through the Maxwell equations. The Thus obtained ΔS vs. T curves have peaks at temperatures depending on x in a range of 8–18 K. ΔS values of HoxEr1−xN expressed in terms of J K−1 m−3 were higher than those of intermetallic compounds of rare earth and transition metals previously reported. These ΔS peak plots are along a convex curve, which may indicate an interaction between the two components.

Synthesis of boron carbide powder by a carbothermic reduction method

2004 ◽  
Vol 24 (10-11) ◽  
pp. 3227-3234 ◽  
Author(s):  
A. Alizadeh ◽  
E. Taheri-Nassaj ◽  
N. Ehsani
Keyword(s):  
Boron Carbide ◽  
Carbothermic Reduction ◽  
Reduction Method ◽  
Carbide Powder
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