Related magnetic properties of CoFe2O4 cobalt ferrite particles synthesised by the polyol method with NaBH4 and heat treatment: new micro and nanoscale structures

RSC Advances ◽  
2015 ◽  
Vol 5 (70) ◽  
pp. 56560-56569 ◽  
Author(s):  
Nguyen Viet Long ◽  
Yong Yang ◽  
Toshiharu Teranishi ◽  
Cao Minh Thi ◽  
Yanqin Cao ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Magnetic Properties ◽  
Cobalt Ferrite ◽  
Treatment Process ◽  
Polyol Method ◽  
Heat Treatment Process ◽  
Nanoscale Structures

In this contribution, hierarchical CoFe2O4 particles are successfully prepared via a modified polyol elaboration method with NaBH4 and a proposed heat treatment process.

Effect of heat treatment process on the structural and soft magnetic properties of Fe38Co38Mo8B15Cu ribbons

2020 ◽  
Vol 527 ◽  
pp. 119745 ◽  
Author(s):  
Sultan Öztürk ◽  
Kürşat İçin ◽  
Merve Gençtürk ◽  
Metin Göbülük ◽  
Peter Svec
Keyword(s):  
Heat Treatment ◽  
Magnetic Properties ◽  
Treatment Process ◽  
Soft Magnetic Properties ◽  
Heat Treatment Process ◽  
Soft Magnetic

scholarly journals Effect of ball milling and heat treatment process on MnBi powders magnetic properties

2016 ◽  
Vol 680 ◽  
pp. 1-5 ◽  
Author(s):  
Wei Xie ◽  
Evgueni Polikarpov ◽  
Jung-Pyung Choi ◽  
Mark E. Bowden ◽  
Kewei Sun ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Magnetic Properties ◽  
Ball Milling ◽  
Treatment Process ◽  
Heat Treatment Process

Size Influence on Magnetic Properties of Nickel Hollow Spheres

2013 ◽  
Vol 652-654 ◽  
pp. 321-326
Author(s):  
Zhi Bin Li ◽  
Rui Rong Wang ◽  
Yi Da Deng
Keyword(s):  
Heat Treatment ◽  
Grain Size ◽  
Magnetic Properties ◽  
Domain Wall ◽  
Magnetic Anisotropy ◽  
Magnetization Reversal ◽  
Treatment Process ◽  
Reduction Method ◽  
Hollow Spheres ◽  
Heat Treatment Process

Nickel hollow spheres (NHSs) with different diameter have been synthesized by the autocatalytic reduction method. The morphology, size distribution and magnetic properties of NHSs were characterized. The results indicate that when the nickel hollow spheres become smaller, mechanism of magnetization reversal varies from motion of domain wall to spin coherent rotation. After the heat treatment process, the grain size of samples becomes bigger and coercivity is enhanced because domain wall is pinned by local magnetic anisotropy induced spontaneously.

Optimization of Heat Treatment Process of ZE41A Magnesium Alloy Using Grey- Based Taguchi Method

2008 ◽  
Vol 3 (2) ◽  
pp. 63-69
Author(s):  
M. Sivapragash ◽  
◽  
V. Sateeshkumar ◽  
P.R. Lakshminarayanan ◽  
R. Karthikeyan ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Magnesium Alloy ◽  
Taguchi Method ◽  
Treatment Process ◽  
Heat Treatment Process

EFFECT ON HARDNESS and MICRO STRUCTURAL BEHAVIOUR OF TOOL STEEL AFTER HEAT TREATMENT PROCESS

2017 ◽  
Vol 4 (24) ◽  
Author(s):  
Karanbir Singh ◽  
Aditya Chhabra ◽  
Vaibhav Kapoor ◽  
Vaibhav Kapoor
Keyword(s):  
Heat Treatment ◽  
Empirical Study ◽  
Tool Steel ◽  
Treatment Process ◽  
Heat Treatment Process ◽  
Structural Behaviour ◽  
Treatment Processes ◽  
En 31

This study is conducted to analyze the effect on the Hardness and Micro Structural Behaviour of three Sample Grades of Tool Steel i.e. EN-31, EN-8, and D3 after Heat Treatment Processes Such As Annealing, Normalizing, and Hardening and Tempering. The purpose of Selecting Tool Steel is Because Tool Steel is Mostly Used in the Manufacturing Industry.This study is based upon the empirical study which means it is derived from experiment and observation rather than theory.

Failure Analysis on a Counterweight Assembly of an Aeroengine

2011 ◽  
Vol 339 ◽  
pp. 342-348
Author(s):  
Hai Jun Tang ◽  
Hong Yu Yao
Keyword(s):  
Heat Treatment ◽  
Stress Concentration ◽  
Failure Analysis ◽  
Failure Mechanism ◽  
Treatment Process ◽  
Hardness Test ◽  
Heat Treatment Process ◽  
Material Loss ◽  
Structure Strength ◽  
Crucial Part

The paper presents a failure analysis on a counterweight assembly installed on crank shaft which resulted in an in-flight shutdown of a piston aeroengine. The counterweight assembly failure includes counterweight block material loss and fractured washer which is the most crucial part for in-flight shutdown in this type of aeroengine. Macro observation, fractography analysis, metallography analysis and hardness test were conducted on the failed counterweight assembly. The result shows that failure mechanism of counterweight block and washer is fatigue. The washer failure is likely due to inappropriate heat treatment process and continuous impact in flight by slightly tilted roller. Counterweight material loss is attributed to stress concentration, low structure strength and impact came from the tilted roller. Finally some safety suggestion on design and maintenance is given.

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