Effects of Furnace Atmosphere on the Post-Anneal Adhesion Capability of Insulation Coating to Electrical Steel Substrates

2019 ◽  
Author(s):  
K. Peng
Keyword(s):  
Electrical Steel ◽  
Furnace Atmosphere ◽  
Insulation Coating ◽  
Steel Substrates

Characterization of the Intermetallic Compounds Formed during Hot Dipping of Electrical Steel in a Hypo-Eutectic Al-Si Bath

2010 ◽  
Vol 297-301 ◽  
pp. 370-375 ◽  
Author(s):  
I. Infante Danzo ◽  
Kim Verbeken ◽  
Yvan Houbaert
Keyword(s):  
Electrical Steel ◽  
Steel Substrate ◽  
Annealing Treatment ◽  
Diffusion Annealing ◽  
X Ray Diffraction ◽  
Electrical Steels ◽  
Al Content ◽  
Dipping Process ◽  
Steel Substrates

In order to improve the magnetic properties of electrical steels, it may be desirable to increase the Si and/or Al content of the steel. A possible and alternative route to realize this is through the application of an Al-Si-rich coating on the steel substrate using a hot dipping process, followed by a diffusion annealing treatment. Previously, a series of compositions were used for dipping, namely: pure Al, Al + 10wt% Si (hypo-eutectic composition) and Al + 25wt% Si (hypereutectic composition). After these dipping experiments, and the subsequent evaluation of the coating and its formed intermetallic phases, the use of a hypo-eutectic Al-Si-bath was recommended for further investigation, because of certain advantages: i.e. hypo-eutectic concentrations allow lower dipping temperatures and reduce the formation of ordered Fe-Si-structures that cause brittleness in the coating and substrate. The present work reports on the results obtained on materials that were hot dipped in a hypo-eutectic Al-Si bath. An Al + 1wt%Si bath was used to coat electrical steel substrates with different silicon contents with dipping times, varying between 0 to 20 seconds, after a preheating of the samples to a temperature of 700°C. A thorough characterization of the formed intermetallics was made by Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS) and X-Ray Diffraction (XRD). Three different compounds were identified as Fe2Al5, FeAl3 and a nearly pure Al phase.

Effect of furnace atmosphere and silica content on the consolidation behaviour of magnesia partially stabilised zirconia

1990 ◽  
Vol 48 (4) ◽  
pp. 1056-1057
Author(s):  
J. Drennan ◽  
R.H.J. Hannink ◽  
D.R. Clarke ◽  
T.M. Shaw
Keyword(s):  
Liquid Phase ◽  
Silica Content ◽  
Liquid Phase Sintering ◽  
Furnace Atmosphere ◽  
Boundary Phase ◽  
Analytical Electron ◽  
Analytical Electron Microscope ◽  
Series Of Experiments ◽  
Compositional Gradients ◽  
Mobile Liquid

Magnesia partially stabilised zirconia (Mg-PSZ) ceramics are renowned for their excellent nechanical properties. These are effected by processing conditions and purity of starting materials. It has been previously shown that small additions of strontia (SrO) have the effect of removing the major contaminant, silica (SiO2).The mechanism by which this occurs is not fully understood but the strontia appears to form a very mobile liquid phase at the grain boundaries. As the sintering reaches the final stages the liquid phase is expelled to the surface of the ceramic. A series of experiments, to examine the behaviour of the liquid grain boundary phase, were designed to produce compositional gradients across the ceramic bodies. To achieve this, changes in both silica content and furnace atmosphere were implemented. Analytical electron microscope techniques were used to monitor the form and composition of the phases developed. This paper describes the results of our investigation and the presentation will discuss the work with reference to liquid phase sintering of ceramics in general.

Enhancement of RH Refractory Performance for Electrical Steel Processing

2019 ◽  
Author(s):  
S. Bharati ◽  
B. Patil ◽  
H. Vishwanath ◽  
P. Hittalamani ◽  
S. Joshi
Keyword(s):  
Electrical Steel ◽  
Steel Processing

Influence of magnetron sputtering conditions on the parameters of TiN coatings on steel substrates

2006 ◽  
Vol 2006 (suppl_23_2006) ◽  
pp. 269-274 ◽  
Author(s):  
R. Mirchev ◽  
V. Antonov ◽  
I. Iordanova ◽  
P. J. Kelly
Keyword(s):  
Magnetron Sputtering ◽  
Tin Coatings ◽  
Steel Substrates

Examination of Measurement Method for Magnetostriction of Electrical Steel Sheet with Lock-in Amplifier

2012 ◽  
Vol 132 (11) ◽  
pp. 1033-1038
Author(s):  
Yuichiro Kai ◽  
Yuji Tsuchida ◽  
Takashi Todaka ◽  
Masato Enokizono
Keyword(s):  
Measurement Method ◽  
Steel Sheet ◽  
Electrical Steel ◽  
Lock In ◽  
Electrical Steel Sheet

Measuring Iron Loss of the Electrical Steel Sheets with Different Grades under Compressive Stress Normal to the Surface

2019 ◽  
Vol 139 (4) ◽  
pp. 190-196
Author(s):  
Shinya Urata ◽  
Yoshitaka Maeda ◽  
Hideo Nakai ◽  
Yuuya Takeuchi ◽  
Kyyoul Yun ◽  
...  
Keyword(s):  
Compressive Stress ◽  
Electrical Steel ◽  
Iron Loss ◽  
Steel Sheets ◽  
Electrical Steel Sheets

Adhesive Strength of Cobalt-Alloy Coatings Applied by Laser Surfacing on Structural-Steel Substrates

2020 ◽  
Vol 40 (10) ◽  
pp. 882-884
Author(s):  
A. V. Shafranov ◽  
E. A. Morozov ◽  
K. R. Muratov ◽  
A. A. Drozdov ◽  
A. N. Yurchenko
Keyword(s):  
Structural Steel ◽  
Adhesive Strength ◽  
Cobalt Alloy ◽  
Laser Surfacing ◽  
Steel Substrates
Sign in / Sign up

Export Citation Format

Share Document