A New Low-Temperature Sintering Method for NiCuZn Ferrite

2007 ◽  
pp. 695-698
Author(s):  
Pei Bian ◽  
Dong Ying Ju
Keyword(s):  
Low Temperature ◽  
Low Temperature Sintering ◽  
Nicuzn Ferrite ◽  
Sintering Method

Development of Ferrite Magnetic Materials with High Strength by a Low-Temperature Sintering Method

2006 ◽  
Vol 317-318 ◽  
pp. 893-898
Author(s):  
Dong Ying Ju ◽  
Pei Bian
Keyword(s):  
Low Temperature ◽  
Boric Acid ◽  
Magnetic Materials ◽  
High Strength ◽  
Iron Chloride ◽  
Process Conditions ◽  
Low Temperature Sintering ◽  
Co2 Gas ◽  
Ferrous Oxalate ◽  
Sintering Method

Magnetite (Fe3O4) ferrite magnetic materials have attracted attention arising by the chip coil electronic material. However, its industrial applications have been limited by the need for high temperature sintering under reduced pressure or vacuum. In order to develop the process method of low-cost and energy saving with high-strength and high magnetism of the magnet, in this paper, a new low-temperature sintering method using CO2 gas and adding a small amount of boric acid (H3BO3) is proposed. Here, the super fine magnetite powder was fabricated by decomposition from ferrous oxalate at 500 in CO2 gas. The ferrous oxalate was synthesized using iron chloride and ammonium oxalate through liquid phase precipitation. The magnetite powder compact was produced by Newton press and CIP (cold isostatic press) after adding a small amount of boric acid. In this study, the effects of the additive on the mechanical and magnetic properties of the sintered magnet were also evaluated. By characteristic evaluation of the magnet, the validity of the proposed new low-temperature sintering process and the optimal process conditions were confirmed.

scholarly journals Inkjet printed paper based frequency selective surfaces and skin mounted RFID tags: the interrelation between silver nanoparticle ink, paper substrate and low temperature sintering technique

2015 ◽  
Vol 3 (9) ◽  
pp. 2132-2140 ◽  
Author(s):  
Veronica Sanchez-Romaguera ◽  
Sebastian Wünscher ◽  
Badredin M. Turki ◽  
Robert Abbel ◽  
Silvia Barbosa ◽  
...  
Keyword(s):  
Low Temperature ◽  
Silver Nanoparticle ◽  
Rfid Tags ◽  
Frequency Selective Surfaces ◽  
Low Temperature Sintering ◽  
Paper Substrate ◽  
Frequency Selective ◽  
Nanoparticle Ink ◽  
Sintering Method

Interdependence between ink, substrate and sintering method on inkjet printed devices.

A New Low-Temperature Sintering Method for NiCuZn Ferrite

2007 ◽  
Vol 336-338 ◽  
pp. 695-698
Author(s):  
Pei Bian ◽  
Dong Ying Ju
Keyword(s):  
Low Temperature ◽  
Boric Acid ◽  
High Frequency ◽  
High Strength ◽  
Initial Permeability ◽  
Sintered Body ◽  
Ferrite Powder ◽  
Low Temperature Sintering ◽  
Nicuzn Ferrite ◽  
Co2 Atmosphere

Low temperature sintering NiCuZn ferrite was employed at most cases due to its co-firability with Ag (below 960°C). The purpose of this study is to fabricate NiCuZn ferrite sintered body with high-strength and high-frequency magnetic properties. Following is the procedure: firstly, NiCuZn ferrite powder was synthesized under CO2 atmosphere at 500°C from the mixed doxalate synthesized by liquid phase deposition method; then a small amount of boric acid [H3BO3] was added to the powder, and the NiCuZn ferrite powder compact was prepared with Newton press and CIP methods; finally, NiCuZn ferrite sintered body was fabricated by sintering at 900°C under CO2 atmosphere. By this method, NiCuZn ferrite sintered body with 0.5 mass% boric acid was obtained, which was additive with strength 340 MPa, high frequency applied scope below 20MHz and initial permeability 38.

Low Temperature Sintering of YIG Using Microwave Sintering Method

2010 ◽  
Vol 118 (1) ◽  
pp. 67-75 ◽  
Author(s):  
T. Ramesh ◽  
S. R. Murthy ◽  
R. S. Shinde
Keyword(s):  
Low Temperature ◽  
Microwave Sintering ◽  
Low Temperature Sintering ◽  
Sintering Method
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