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Ask The ExpertsMetallography Forum |
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(Metallographic sample preparation and etching to reveal microstructure only)
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Ask The ExpertsMetallography Forum |
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(Metallographic sample preparation and etching to reveal microstructure only)
The etchants I am using are:
120ml ethanol (C2H2OH)
30 ml hydrochloric acid (HCI)
10 g ferric chloride (FeCI3)
I was wondering in what the concentration the hydrochloric acid should be.
Thank you very much for your help,
Julia Wiecken
PhD student
Department of Archaeology
University of Exeter
Can you tell me the suitable etchant for TiO2 plz?
- Yasir 05/12/08 (1)Is there a national standard test that can be performed to test.
I am facing a similar question for H2S in a similar application.
If you can point me in the direction of any test standards that can be use it would be most helpful.
thanks,
Mike Neiman
Your answers are appreciated in advance.
- canderim onder 05/07/08 (1)Is there an etchant for reaveling presence of shrinkage based on Cu intermetallics when they grow up in hot spots?
- Antonio Magallanes 05/05/08 (2)Beraha BI
Klemm I
Sulfamic beraha's
Beraha cds
Sodium metabisulfite beraha's
LB Reagent
thanks
- nizam basha 04/27/08 (0)i need an etch for 61Co-29Cr-6Mo, could you give me a suggestion, i can´t use electrolytic etch
- Alfonso Neftali 04/24/08 (0)I also need information about any supplier of lab purpose induction melter to prepare alloy ingots.
- S.Parida 04/24/08 (1)After etching a 6150 spring steel quenched (845 C)in oil and tempered (425 C),using nital,I observed a microstructure different from the usual darkened tempered martensite.It consisted of a colored gray web spread towards the surface of the specimen.Can it be tempered bainite?
Thanks in advance
- Rogério Tavares 04/16/08 (3)Thank You for Yous help?
- Krzysztof Maślak 04/14/08 (1)What is the etchant can be used to reveal the forge line in ERW Tubes.
Appreciated if you can send the Procedure for Checking the Flow Lines
- Kaarthic.N 04/11/08 (2)
as well galvalume coated structure which etchant will be perfect.what is the compositition of amyl nital. how to prepare. thanks prerana
what is the etching sol. for T800 and T800 + WC coated on stainless steel by Hvof coating tech.
thanks alot
- rokias 04/06/08 (1)thank you
- Randal Gee 04/02/08 (1)Is it possible to find out from microstructure?
If so, which etchant to be used?
Please guide me...
- S.Raveendran 04/02/08 (2)Thanks in Advance.
- Jack Lally 03/17/08 (1)Has anyone ever heard of Shantz's Reagent ? If so, does anyone have the recipe for it ?
Thanks,
Ian Nunn
- Ian Nunn 03/13/08 (8)Has anyone ever heard of Shantz's Reagent ? If so, does anyone have the recipe for it ?
Thanks,
Ian Nunn
- Ian Nunn 03/13/08 (0)I need information for Zr etchant.
I have sample of Zr thin film sputtered on Si substrate. I would like to know what is the best etchant so I could measure the Zr thickness on Si layer.
Thanks
Regards,
Tedi Kurniawan
I have been working with HSLA steels and am having a dificult time bringing out grain structure, flow lines, and fusion lines in our ERW tube making process
- cliff Jones 03/11/08 (5)I would appreciate any suggestion on a method to black oxidize hardened AUS8 stainless. I am attempting to darken the recesses of filework on a custom knife to enhance the relief appearance. A swabbing rather immersion technique is preferred. Thank you in advance.
- Randy 03/01/08 (0)We are need the Chamical composition and physical / Mechanical properties of ASTMA UNS 31803 material.
- Niranjan Khade 02/25/08 (1)Also, we are looking for a good sensitization test because ASTM A 262 does not cover this alloy.
Thanks!
- Albert Zweistein 02/21/08 (7)I have been asked to carry out a microexamination of 0.9mm laser/spark eroded nimonic 75 sheet to check for the presence of 'spark out'.
I know what this is in a grinding sense, but how would it manifest itself as a feature on a microsection?
Please suggest me the additions in the one ton induction furnace and templerature for tapping for about 20 mm section thickness part.
I will be waiting eagerly.
Thanks.
Sincerely,
Dhan Upadhyaya-Gujarat-India
- Dhan Upadhyaya 02/12/08 (7)Thanks
- Ana 02/06/08 (1)We have tried a Sodium Hydroxide Etch, and Keller's reagent without any luck. Do you need to view under polarized light for either of these etchants? The documentation we have is not specific.
Is my only option Barker's?
Thanks,
- Rob Peace 02/05/08 (36)I tried to take kikuci pattern of HAZ Stainless steel welding SS304. I choose two phase (gamma/austenitic SS and alpha ferritic stainless steel)
but EBSD showed many unidentified orientation (black area)
I wonder to know why?
Thank you,
Malia Miranda
thanking you,
shanthi elangovan
Thanks and best regards,
I have used the Kalling No. 2 reagent and I have seen something like a laminar morphology.
Please, tell me if i have used the correct reagnet and what i expect to watch in a picture with 100X
Thanks a lot
- Luis E. Carrera Anlehu 01/19/08 (3)Best regards,
Reza
thanks
- robert 01/16/08 (1)Best regrads
We are currently in disucssion with a client.
They insist that grain flow for the above grade is specified in ASTM A182 & API 6A.
We disagree, but cannot find any reference in either specification...
Does anyone have any ideas?
Thanks for looking
Gavin
- Gavin 01/10/08 (3)Do you know of anyone who sells sets of representative samples having known compositions and thermomechanical histories, e.g. hypo- and hypereutectoid steels subjected to simple heat treatments, grey and white cast irons, brasses that have been deformed and annealed.....
I am teaching an introductory course in materials, but am not set up with equipment or manpower to produce these in-house. Would like to illustrate lecture material with a lab session in which students look at real samples.
Thanks for any and all advice!
- Christopher Viney 01/09/08 (4)i made the plasma coating of chromium carbide on aluminium substrates. i would like to find the microstructure and microhardness,so what is the etchent for chromium carbide
- arunkumar 01/08/08 (5)THANKS
- faruk cimen 01/05/08 (1)Regards,
- Rob 12/18/07 (2)Can you recommend a procedure for measuring the grainsize in strips of oriented and non-oriented silicon steels?
- Ivan Garshelis 12/14/07 (5)
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