Classes of magnetic materials: alnico, Physics

Alnico is a family of alloys containing metals Fe, Co and Ni plus small amount of Al and copper. These alloys are directionally solidified and subsequently given a heat treatment to in a magnetic field that increases the desired properties. The heat treatment at 800 degree centigrade results in a phase separation into two phases at different composition with different amount of magnetisation. The phase with a large magnetisation precipitates as very fine elongated particles embedded in a matrix of the other phase. It is hard to change the direction of the magnetic moments in these fine elongated particles.

APPLICATIONS: Alnico magnets finds applications in loudspeakers, microwave devices, motors, generators, meters, magnetos, separators, communication devices and welding machines.

 

Posted Date: 7/7/2012 8:33:50 AM | Location : United States







Related Discussions:- Classes of magnetic materials: alnico, Assignment Help, Ask Question on Classes of magnetic materials: alnico, Get Answer, Expert's Help, Classes of magnetic materials: alnico Discussions

Write discussion on Classes of magnetic materials: alnico
Your posts are moderated
Related Questions
QUESTION 1 A car of mass 800 kg is pulling a trailer of mass 300 kg up the slope of angle ? to the horizontal where sine ? = 1/200. Resistance to motion (apart from gravity) is 1.

State Gauss's law. The total flux of the electric field E over whichever closed surface is equal to 1/ε o times the net charge enclosed by the surface. That is φ = q / ε

Q. As-per to Coulombs Law if two charged particles are repelled with a given force at a distance d by what multiple will the force decrease by if d is increased by 4 times? An

a compreesed spring is used to send a cart around circular loop what is the friction

Could the light along a side emitting optic be a totally homogeneous? Regardless of the assurances of several manufacturers, it is a total impossibility since it would clash wi

Reverse Characteristic of a Zener diode Reset voltage to  zero.  Connect  zener diode as shown in fig. and reverse characteristics are demonstrated in fig. Raise voltag


What are the objectives of annealing? Slow cooling rate from the eutectoid temperature yields course pearlite - a mixture of relatively coarse crystals of ferrite and cementite

Q. The image of a small electric bulb fixed on the wall of a room is to be obtained on the opposite wall ma way by means of a large convex lens. What is the maximum possible focal

Determne the magnetic field due to a finit sraight wire of length 2l, carrying a steady current i. The point of interest P is l distance away from the middle point of wire O. So