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Questions related from Son Thanh Nguyen
I'm looking for weight fraction of my ceramic-nickel composite by using XRD. In order to calculate the fraction using RIR method, I need to know the I/Ic ratio of nickel. However, in the database...
12 December 2014 9,452 3 View
I have worked with yttirum titanate, Y2Ti2O7, an oxide phase which is usually used to disperse in steel to strengthen its physical properties. Now I am searching for other phases such as Y2TiO5,...
27 February 2014 5,580 2 View
Maybe this is an odd question, but so far I don't understand why we have two standard methods for testing bending/flexural strength of fine ceramic, (3-points- and 4 points-bending tests) though...
25 January 2014 9,953 28 View
Assuming that we have analysed a sample with SEM-EDS. If the surface of the sample was not polished (or not polished very well), then it would not be very flat. I am curious how much this rough...
07 December 2013 6,911 2 View
For using FE-SEM-EDS to analyse the composition of a ceramic sample, usually we coat the sample to make it conductive before insert it into FE-SEM. What I'm curious is which coating technique will...
05 December 2013 716 13 View
Assuming in a XRD system we have one sample, but two different sets of diffractometer (including X-ray source and detector). I am wondering, how will the results change (peak intensity, analysing...
27 November 2013 5,558 6 View
As far as I know, there are three popular methods of etching in ceramic engineering, which are: thermal, chemical and plasma etching. We usually use these technique to etch the grain boundary on...
27 November 2013 6,796 2 View
I am working with X-ray CT Skyscan 1172 and its accompanied software CT-An. Are you experienced with this device? Can we share some analysing techniques, especially in diffusion mapping and...
19 November 2013 2,882 12 View
I am trying to measure the porosity of my sample, which is a sintered body of yttria-based ceramic. The density of the sample measured by Archimedes method is around 96%. How can I measure the...
17 November 2013 5,211 10 View
Maybe you agree with me that using BET we can get information of pore size distribution. But, I am wondering whether we can know particle size distribution from this technique? Assuming that every...
15 November 2013 5,066 19 View
I am new in porosity analyzing techniques, but I am very interested in this field. As far as I know, there are two main methods to investigate porosity of bulk samples: BET and mercury...
31 October 2013 8,305 14 View
I am thinking of a way to investigate the penetration of nanoparticles into ceramic sintered body. As we know, even in highly dense (up to 99.9% of relative density) sintered bodies, there are...
27 October 2013 3,549 4 View
I have a specimen fabricated by sandwiching a metal foil between two ceramic plates, and heating them over melting point of the metal. Now I would like to investigate the diffusion, or...
25 October 2013 2,382 5 View
Maybe you agree with me that the hardness of a ceramic will increase when its grain size reduce. There are a lot of work studying on the mechanism of this phenomenon. However, what will happen...
03 October 2013 7,004 5 View
I am using SEM/EDS analysis to investigate the composition of my sample (which was sintered by Y, Ti, O and Fe). Unexpectedly, there is a peak of Si coming out. I tried to analyze the sample few...
28 September 2013 8,141 17 View
I have prepared some sandwich of metal and ceramic layers. Now I would like to observe their interface, especially in atomic level. I am thinking about using FIB to cut out some samples from the...
14 September 2013 8,096 8 View
