What is the eutectic reaction equation?
The eutectic reaction (Liquid → α + β) starts when one leading edge of the triangle, in this case the tie-line L−β, cuts point X and is completed when its trailing edge, the tie-line α-β, cuts X. As X is traversed by tie-triangles, the relative amounts of the three phases can be derived for each isotherm.
What type of transformation is the reaction α β → γ?
Peritectoid transformation, where two solid phases of a binary alloy transforms into one phase (α + β → γ) upon cooling.
Which one of the equation is eutectic point?
nT = 1 − TA/Tb, where TA and TB are melting points for A and B components (where TA < TB); if TA and TB are equal, nT = 0, nV = 0, i.e. the system can’t be defined thermodynamically as eutectic.
What is an eutectic reaction and eutectoid reaction?
The key difference between eutectic and eutectoid reaction is that in eutectic reactions, a liquid transforms into two solid phases at the same time whereas in a eutectoid reaction, a solid transform into two other solid phases at the same time.
What is alpha beta and gamma?
Alpha particles carry a positive charge, beta particles carry a negative charge, and gamma rays are neutral. An alpha particle is made up of two protons and two neutrons bound together. Beta particles are high energy electrons. Gamma rays are waves of electromagnetic energy, or photons.
What are alpha beta and gamma decays?
Gamma radiation is simply a loss of energy by the nucleus, a deexcitation; much like emission of light or X-rays by energetic atoms. Alpha and beta decay almost always leave the nucleus in an excited state. Gamma emission brings the nucleus down to a more stable energetic state.
What is eutectic point?
The eutectic point is the lowest temperature at which the liquid phase is stable at a given pressure. A eutectic system is a homogenous, solid mixture of two or more substances that form a super-lattice that melts or solidifies at a temperature lower than any of the individual ingredients’ melting point.