42 Questions 14 Answers 0 Followers
Questions related from Sadegh Mojahedfar
thank you 1. Why uniformity of grains is important to have transparent ceramics?and How is effect uniformity of grains on increasing transparency of ceramics?then What can we do for have final...
02 February 2017 7,283 0 View
if that is related to grain shape Why in some source implied "a lot of transparent have cubic structure but in some articles produce transparent ceramic with monoclinic or hexagonal structure is...
01 January 2017 9,136 3 View
thank u
11 November 2016 5,475 0 View
tnx
11 November 2016 6,862 0 View
I'll synthesis ZnWO4 from the powders ZnO and WO3 by used of SSR, but seems that the particles ZnO and WO3 in Water and ethanol are insoluble. Thank you
10 October 2016 680 3 View
I'm looking for values of solubility ZnO and WO3 in water and ethanol , How can help me ? thank you
10 October 2016 3,330 2 View
10 October 2016 317 0 View
tank you
08 August 2016 9,580 1 View
for ZnWO4 with nano particle . which kind formula do I use? I know one formula for single metalic element like T=T0(1-(constant/D)) but for these kind material I didn't see any thing. tnx
05 May 2016 2,227 5 View
Is there any different between grain and crystallite and single crystal words ? and with regarded figure below for a polycrystalline , how many grain are there ?
05 May 2016 4,317 9 View
my material is a polycrystallian ceramic .
05 May 2016 3,040 0 View
My means is by use of which kind analysis can we do that ? I haven't its volume . tnx
05 May 2016 4,121 1 View
its melting point is about 1100-1200 Celsius , but i need to its accurate melting point . tnx
05 May 2016 9,583 7 View
by which kind analysis ? I want to know when my powder is excited and now it give emission spectra where is center emission . tnx
05 May 2016 9,660 1 View
Is it true that for have a single crystal always we use of The Czochralski and Bridgman method and when we use of synthesis we arrive to poly crystal ?
05 May 2016 9,499 3 View
05 May 2016 6,497 0 View
05 May 2016 7,602 0 View
for a maximum possible packing ?
05 May 2016 5,430 0 View
05 May 2016 5,376 0 View
why it can't analysis other materials?
04 April 2016 2,964 9 View
and what kind of application has that plane ?
04 April 2016 5,001 9 View
That's a graph for Intensity-2Theta .
04 April 2016 445 8 View
if the answer is yes , why ?
04 April 2016 7,252 3 View
How we determine sintering's condition (temperatures and soak- time) for growth material, especially for nanopolycrystal or general state?
04 April 2016 3,860 2 View
tnx about your answer
04 April 2016 1,982 1 View
for sintered powder
04 April 2016 5,389 0 View
04 April 2016 3,313 0 View
, if we can't distinguish routes produce every kind ? if we arrive to same powders in material's pure for example in analysis for sintering their pills , Can we give same sinterring's condition...
04 April 2016 8,659 0 View
my means nano grain ,
04 April 2016 3,378 0 View
What kinds reason are there that we sintering or calcination a powder ?
04 April 2016 4,420 1 View
how can I Choice that (according to what conditions)? my powder's size is about 60nm .
04 April 2016 5,720 3 View
How many are there ?
04 April 2016 6,246 0 View
sintering soak time,
04 April 2016 4,484 1 View
or arrive to unit cell's atoms?
04 April 2016 3,556 2 View
for ZnWO4
04 April 2016 707 1 View
for example in this sentences : several metal ions in a solution could be first chelated to form metal complexes .
04 April 2016 7,418 2 View
My means is that : this rate is for heating or for cooling ? which one is more important?
04 April 2016 5,852 0 View
I'll think , I have to analysis equilibrium diagram for ZnO-WO3 , But How?
04 April 2016 5,309 4 View
for ceramics oxide ,
04 April 2016 6,611 0 View
04 April 2016 3,396 4 View
who can explain it ?
04 April 2016 1,883 3 View
i'll growth CdWO4 for proje master of science . and i don;t no more thing about growth's circumstances ?
10 October 2015 4,077 0 View
