you teaching is extremely helpful as you are explaining things slowly and simply
@afiqsafwan47145 жыл бұрын
OMG.....thank you so much for making me finally understand this. I will be recommending this to my friends if they have any problem with eutectic system.
@ahmedreshi56979 ай бұрын
My Chinese, barely any English speaking lecturer explained this whole playlist in one 40 min lecture... AND he's teaching at one of the biggest UK universities, which Im paying way too much for. This is how you teach. FREE. on KZbin.
@zaidpatel73125 жыл бұрын
Extremely helpful lecture. Thank you so much!
@njghtcrawler78995 жыл бұрын
Very helpful video. Thank you for the clear handwriting and the different colors are a nice touch.
@TrainPlaneBoat3 жыл бұрын
Thank you from Canada!! Very well explained I appreciate it
@jahidhassan9344 Жыл бұрын
I am from Bangladesh.. Glad to learning from you Sir💚
@shamikumar34744 жыл бұрын
You r magic sir... Love u ... Hope I could meet u... Thanks for explanation
@rockinzzzup974 жыл бұрын
very nicely explained. thanks
@umararshad4817 ай бұрын
You are amzing sir, I didn't find explanation like this, thank you so much sir.
@azadarhussain3012 ай бұрын
Thank you so much Sir❤ you made it easy 😊
@Rajesh-yx2wl2 жыл бұрын
Thank you sir, nice explanation
@parthaaec07 Жыл бұрын
Excellent teaching 👏
@madhuyadav49924 жыл бұрын
Thanks sir for helpful videos
@335_mdfaizan62 жыл бұрын
Fabulous😋✨
@TamilArasan-hb9gm3 жыл бұрын
Very nice explained
@kartiknk49175 жыл бұрын
Sir, why liquidus and solidus curve get change?...... We have only alloy of sn and pb so, why two solid occur by solidify?
@sanskarkumar64843 жыл бұрын
Thanks Sir ❤✌
@olusolapelumi66609 ай бұрын
I wish I could make donations to support sir 🙏
@d_gamer_r2 жыл бұрын
made it look very easy...
@kartiknk49175 жыл бұрын
Is there liquidus and solidus curve occur change only by 62% eutectic composition? What happens when we use other %?
@MusikMusk5 ай бұрын
No, there's a liquidus-solidus curve change at different composition. Example at 50% eutectic composition which affects the eutectic temperature which may drop
@anuragdatta34033 жыл бұрын
Sir, can a reverse graph exist (with x axis being wt% of Pb)? Does the graph strictly have to be in this format?
@introductiontomaterialsscience3 жыл бұрын
That is possible. Whether you draw the diagram with wt%Sn or Wt%Pb as your composition axis is your choice.
@nadimk99524 жыл бұрын
Sir how can seprate pb from sn by chemical method
@KingKong-tt1wq Жыл бұрын
thankyou sir really very useful
@rohitpardeshi19075 жыл бұрын
Sir, please explain us why Pb-Sn alloy shows different phase diagram?Why there occurs a different alpha n beta solids?
@annisahayyaarundati25 Жыл бұрын
because Pb and Sn have different crystal structure. Different crystal structure didn't allow complete solid solution. So, both alpha and beta has solubility limit represent as the solvus line. Isomorphous diagram, like we see from Cu-Sn, is only for components with same crystal structure, so there's complete solid solution.
@manishjena96494 жыл бұрын
Sir which engineering chemistry book should I refer as there are lots of books giving their own definition of eutectic system.
@introductiontomaterialsscience4 жыл бұрын
In fact, there is no confusion regarding the definition of the eutectic. The definition given here is correct. If you have come across an alternative definition please let me know.
@johnwilliamsgt5 жыл бұрын
Will there be a eutectic point in an isomorphous system. Just to clarify
@rajeshprasad1015 жыл бұрын
No, isomorphous system does not have any invariant reaction.
@kaviyakaviya88303 жыл бұрын
Nice hand writing sir
@raghavadutt14834 жыл бұрын
Sir, why the Eutectic horizontal line is not called as isomorphous line? ( as this line even defines at one temperature at 183 C ).
@rajeshprasad1014 жыл бұрын
It is an isothermal line. Since the line is associated with the eutectic reaction it is called a eutectic horizontal. We could have called it 'eutectic isothermal', but it is not standard.
@raghavadutt14834 жыл бұрын
Thank you ,sir.
@monishreddy17973 жыл бұрын
Sir Is 100% soluility possible in Sn + Pb.. is it possible to draw phase diagrams if the components are not 100% soluble
@introductiontomaterialsscience3 жыл бұрын
One requirement of 100% solubility in a solid state is that the two elements should have the crystal structure. This is not satisfied in this case as Pb is based on FCC lattice whereas Sn is based on BCT lattice. The phase diagram is still possible. The solvus lines will show limited solubility.
@vishaln85987 ай бұрын
thankyou so much sir
@RAHUL__07S3 жыл бұрын
Sir I really need theory of this topic eutectic system...can you help me 🙏🙏
@BC-yr6eg3 жыл бұрын
👍👍👍👍👍👍
@user-lo6fg9ym7r7 ай бұрын
gyanganga
@zaidansari37282 жыл бұрын
It is type 2 or type 3 diagram l...?
@anandhanagarajan999525 күн бұрын
No one in the world they never teach like you
@manojvelishala86334 жыл бұрын
sir why eutectic composition has lowest melting point?
@rajeshprasad1014 жыл бұрын
Like all 'Why' questions this one is difficult to answer. We just accept the phase diagrams as experimentally determined diagrams. Of course, since they are equilibrium diagrams, they represent the phases or mixtures of phases in thermodynamic equilibrium. So one can say that we have these phases because they result in the minimum free energy of the system. But then the question remains why the particular combination of phases have minimum free energy? Difficult to answer!
@manojvelishala86334 жыл бұрын
@@rajeshprasad101 thank you sir
@mohitjoshi96293 жыл бұрын
@@rajeshprasad101 sir aap to shayar bhi ho 😅🙏🙏 dhanya ho gurudev 🙏🙏
@priyanshubariar33172 жыл бұрын
Isn't eutectic horizontal also a solidus line?
@rajeshprasadlectures2 жыл бұрын
No. By definition, a solidus line separates a single phase solid region from a two phase solid+liquid region. This is not true for the eutectic horizontal.
@harikrishnan31124 жыл бұрын
Hi sir. What is the difference between alfa and beta alloy. If alfa is of one crystal structure and beta is of different crystal structure how can both alfa and beta exist as a single crystal. what is the actual difference between alfa and beta sir?? Surface defects - Can we say that alfa and beta in lead tin eutectic alloy at low temperature forms a heterogeneous surface defect. assuming alfa is of one crystal structure and beta is of different crystal structure?
@introductiontomaterialsscience4 жыл бұрын
Alpha and beta have different crystal structures and different compositions. In sample both can be present but they occupy different volume elements of the sample. They meet at a surface which we call the the apha/beta phase boundary.
@harikrishnan31124 жыл бұрын
@@introductiontomaterialsscience Thank you sir. Since this is a substitutonal solid solution of 100% solubility how can we have different crystal structure. if it is a interstitial solid solution like we can have two different solid structure like alfa + Fe3C in Iron carbon diagram.
@clearheartboy777 Жыл бұрын
sir why you didn't explain what is solvus line?
@parthdevbundela67444 жыл бұрын
Sir bita hai kya?
@armanhussain73692 ай бұрын
13:56
@rixz2 жыл бұрын
🙏🥺
@bhaskarmahanthi68683 жыл бұрын
sir why the horizontal line is at 183 degrees
@introductiontomaterialsscience3 жыл бұрын
I can't really answer this question. I will face the same difficulty if one asked why does Pb melts at 327 degree C.