Effect of Thickness on Magnetic Properties of Fe 36

Fe36Co36B19.2Si4.8Mo2W2 amorphous thin films have been produced by thermionic vacuum arc with thickness varying from 200 nm to 260 mn. X-ray diffraction has been employed to reveal a predominant amorphous phase in the as-prepared samples, although a small crystalline fraction cannot be excluded. The bulk magnetic properties of thin films were examined at room temperature using an ADE Magnetics EV9 vibrating sample magnetometer with maximum magnetic field strength of 1750 kA/m, real-time field control and dynamic gauss range capable of reaching a resolution of 0.08 A/m at low fields. The minimum value of the coercivity for the as-prepared samples was about 7 kA/m

Effect of Thickness on Magnetic Properties of Fe36Co36B19.2Si4.8Mo2W2 Thin Film Prepared by Thermionic Vacuum Arc

Fe36Co36B19.2Si4.8Mo2W2 amorphous thin films have been produced by thermionic vacuum arc with thickness varying from 200 nm to 260 mn. X-ray diffraction has been employed to reveal a predominant amorphous phase in the as-prepared samples, although a small crystalline fraction cannot be excluded. The bulk magnetic properties of thin films were examined at room temperature using an ADE Magnetics EV9 vibrating sample magnetometer with maximum magnetic field strength of 1750 kA/m, real-time field control and dynamic gauss range capable of reaching a resolution of 0.08 A/m at low fields. The minimum value of the coercivity for the as-prepared samples was about 7 kA/m

Coating Effect on Magnetic Properties of Fe36Co36B19.2Si4.8Mo3W1Fe_{36}Co_{36}B_{19.2}Si_{4.8}Mo_3W_1 Amorphous Ribbons

In this research, the electrodeposition technique was employed to prepare fine-grained nickel, iron and iron-cobalt coatings with 1 μm thicknesses on the substrate of the $Fe_{36}Co_{36}B_{19.2}Si_{4.8}Mo_3W_1$ amorphous ribbons. The coating effect on magnetic properties was examined at room temperature using an ADE Magnetics EV9 vibrating sample magnetometer with maximum magnetic field strength of 1750 kA/m. It is found that Ni, Fe, and Fe-Co coated amorphous ribbons show 0.60, 0.71, and 1.01 T saturation magnetization, respectively, while uncoated ribbon has 1.55 T

Pre-alvejamento de materiais têxteis com ozônio e avaliação de suas propriedades de superfície, físicas e tintoriais

A inovação dos processos de beneficiamento de materiais têxteis é cada vez mais importante para possibilitara redução no consumo de água e nos tempos de processo na indústria têxtil. O consumo de fibras têxteis noBrasil em 2014 foi de 13,3 kg por habitante, e para beneficiar estes tecidos são utilizados em média 80 litrosde água para cada quilograma de substrato tratado. Este estudo visou aprimorar o processo de préalvejamentopara tecidos têxteis utilizando o ozônio com o objetivo de reduzir o consumo de água, de aditivosquímicos, de tempo e bem como de energia. O potencial de redução do ozônio (2,07 V) é maior que opotencial de redução do peróxido de hidrogênio (1,77 V), o que faz com que o ozônio seja um excelenteagente oxidante. A avaliação dos resultados de resistência física (estouro e tração), propriedades tintoriais(K/S, FC % e DE) e do grau de branco do tecido, indicam que o processo de pré-alvejamento com ozônio afrio é promissor na indústria têxtil, pois além de eliminar a utilização de peróxido de hidrogênio e hidróxidode sódio, reduz o tempo de processo em 60% e diminui o consumo de água em 50%