JoséRoque96

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Diagramas de fase que contienen reacciones de tres fases

Los sistemas binarios constituyen diagramas de fases más complejos que los diagramas de fases isomorfos. Éstos sistemas involucran reacciones constituidas por tres fases separadas.

Es posible identificar a cada una de las tres fases en un diagrama por medio del siguiente procedimiento:

1. Localice la linea horizontal en el diagrama de fases, la cual indica la presencia de una reacción de las tres fases, pero además señala la temperatura a la que ocurre la reacción en condiciones de equilibrio.

2. Ubique tres puntos distintos en esa linea: los dos puntos extremos más un tercero entre los dos anteriores. Este último punto representa la composición a la que ocurre la reacción de las tres fases, este punto no está necesariamente en el centro.

3. Después, observe arriba del punto intermedio e identifique la fase o fases presentes; luego, observe debajo del punto entre los puntos extremos e identifique la fase o fases presentes. Después escriba la reacción de la(s) fase(s) arriba del os) punto(s) que se está(n) transformado en la(s) fase(s) debajo del punto.

4. Identificar esta reacción con las que se muestran en la tabla 1.

File:Reacciones de tres fases con mayor importancia en los diagramas de fases binarios.jpg

Las cinco reacciones de las tres fases más importantes en los diagramas de fases binarios.

Cada una de estas reacciones de tres fases ocurre a una temperatura y composición fijas. En estos casos, la regla de las fases de Gibbs (a presión constante) es:

.Failed to parse (syntax error): {\displaystyle L = C – F + 1 = 2 – 3 + 1 = 0 } .

Esto significa que cuando hay tres fases en equilibrio en un sistema binario, no hay grados de libertad. La temperatura y composición de cada fase es constante, situación que se mantiene mientas existan las tres fases en equilibrio. [1]

Regla de las Fases de Gibbs

La construcción de los diagramas de fases, está regida por las leyes de la termodinámica. Una de éstas es la regla de las fases de Gibbs.

Esta regla representa un criterio para el número de fases que coexisten dentro de un sistema en equilibrio, y se expresa mediante la siguiente ecuación:

Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "http://localhost:6011/commons.wikimedia.org/v1/":): {\displaystyle L = C – F + N } .

• L es el número de grados de libertad o número de variables controladas externamente que deben especificarse para definir completamente el sistema.

• C es el número de componentes en el sistema.

• F es el número de fases presentes.

• N es el número de variables diferentes de la composición (es decir, presión y temperatura). [2]

Referencias

[1] Askeland, D. ; Wendelin, J. (2016). Ciencia e ingeniería de los materiales. México: Cengage Learning.

[2] Ferrero, L.. (2012). Ciencia de los materiales: Diagramas de fases. . Marzo, 2018, de Universidad Nacional de Lujan Sitio web: https://cienciamateriales.files.wordpress.com/2012/08/diagrama-de-fases-4.pdf

File:Reacciones de tres fases con mayor importancia en los diagramas de fases binarios.jpg

Latest comment: 6 years ago2 comments2 people in discussion

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LMLM (talk) 09:14, 19 March 2018 (UTC)Reply

čeština ∙ Deutsch ∙ Deutsch (Sie-Form)‎ ∙ English ∙ español ∙ français ∙ italiano ∙ magyar ∙ Nederlands ∙ Plattdüütsch ∙ polski ∙ português ∙ sicilianu ∙ svenska ∙ suomi ∙ Ελληνικά ∙ македонски ∙ русский ∙ українська ∙ বাংলা ∙ മലയാളം ∙ မြန်မာဘာသာ ∙ 日本語 ∙ 中文（简体）‎ ∙ 中文（繁體）‎ ∙ עברית ∙

Bahasa Indonesia . +/−

Your image or other content, File:Reacciones de tres fases con mayor importancia en los diagramas de fases binarios.jpg, was recently deleted in accordance with our process and policies. You have recreated this content after it was deleted; please do not do this. If you would like to contest the deletion, please visit Commons:Undeletion requests and follow the instructions there to have the deletion reviewed. Recreating deleted content outside of process is not allowed, and doing so repeatedly may cause you to lose your editing privileges. Thank you for understanding.

Incnis Mrsi (talk) 18:04, 19 March 2018 (UTC)Reply

File:Figura 1. "5 Reacciones de tres fases con mayor importancia en los diagramas de fases binarios".jpg

Latest comment: 6 years ago1 comment1 person in discussion

File:Figura 1. "5 Reacciones de tres fases con mayor importancia en los diagramas de fases binarios".jpg has been marked as a possible copyright violation. Wikimedia Commons only accepts free content—that is, images and other media files that can be used by anyone, for any purpose. Traditional copyright law does not grant these freedoms, and unless noted otherwise, everything you find on the web is copyrighted and not permitted here. For details on what is acceptable, please read Commons:Licensing. You may also find Commons:Copyright rules useful, or you can ask questions about Commons policies at the Commons:Help desk. If you are the copyright holder and the creator of the file, please read Commons:But it's my own work! for tips on how to provide evidence of that.

The file you added has been deleted. If you have written permission from the copyright holder, please have them send us a free license release via COM:VRT. If you believe that the deletion was not in accordance with policy, you may request undeletion. (It is not necessary to request undeletion if using VRT; the file will be automatically restored at the conclusion of the process.)

This file is a copyright violation for the following reason: Copied from https://cienciamateriales.files.wordpress.com/2012/08/diagrama-de-fases-4.pdf, page 21

Warning: Wikimedia Commons takes copyright violations very seriously and persistent violators will be blocked from editing.

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LMLM (talk) 09:30, 20 March 2018 (UTC)Reply

Copyright violations

Latest comment: 6 years ago1 comment1 person in discussion

Hello JoséRoque96.

You have uploaded one or more files that are copyright violations. You have done so despite requests from editors not to do so, and despite their instructions. See Commons:Licensing for the copyright policy on Wikimedia Commons. You may also find Commons:Copyright rules by subject matter useful.

This is your last warning. The next time you upload a file that violates copyright, you will be blocked. Please leave me a message if you have further questions.

Túrelio (talk) 10:25, 20 March 2018 (UTC)Reply

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