What additive can be added to convert hydrophobic ceramic particles to hydrophilic while preparing an aqueous-based solution?

Hi everyone, Could any of you help me with the following issue:Surface modification was carried out with hydrophilic ceramic particles to convert into hydrophobic by replacing the hydroxyl group...

03 April 2015 9,992 16 View

Is it acceptable to measure the bulk density of a ceramic powder using D = m/v?

Hi everyone,I need to calculate the Hausner Ratio of my samples. My limitation is such that I don't have much powder for each sample (approx 5cm3), I have been able to get a Tapped Density Tester...

03 April 2015 7,145 17 View

What are the thermal tests that can be done on Polymer Matrix Composites?

Hi, Attached is a picture of an aircraft graded carbon/epoxy composite. Out of curiosity, what are the possible thermal tests and hence properties that can be investigated from such samples? Any...

02 March 2015 7,689 25 View

What is a typical range of %wt solid fraction needed to obtain a concentrated ceramic slurry?

Hi all,Can anyone suggest me what would be a typical range of %wt solid fraction needed to obtain a concentrated ceramic slurry for spray-drying? I have come across some works wherein 50 %wt of...

02 March 2015 4,665 19 View

Is it possible to prepare an aqueous-based slurry consisting of a ceramic which is hydrophobic?

Hi everybody, I've come across some discussions and I would be grateful if someone could clarify whether we can prepare a well-dispersed aqueous-based slurry consisting of ceramic particles which...

02 March 2015 1,217 5 View

How can I obtain agglomerates with a wider particle size distribution using the spray-drying technique?

While preparing an agglomerate of ceramics using via the spray-drying of an aqeous-based slurry, how would one obtain a wider particle size distribution if necessary? Thank you.

02 March 2015 4,546 7 View

Does a nanostructured material at micron-size produce a bimodal coating structure when thermally sprayed?

Greetings,I've come across queries regarding nanostructured thermally sprayed coatings and I'd like to clear my doubts to some extent. It is clear enough that to obtain a nanostructured coating,...

10 November 2014 2,823 21 View

How do you choose the proper temperature and mixing time while preparing a ceramic-based slurry?

Preparation of optimum ceramic slurries can be considered as the first critical step in many ceramic processes. Some significant factors in processing ceramic slurries are mixing speed, time,...

10 November 2014 7,302 3 View

What are the existing approaches to improve the thermal resistance of Polymer Matrix Composites?

Hi everyone, I'd like to know what are the various methods to improve the thermal resistance of polymer matrix composites, especially the epoxy-based ones. Normally, conventional PMCs creep or...

09 October 2014 5,335 9 View

Can anyone advise me on the evaluation of the effect of thermal cycling on thermal stability & mechanical properties of plasma sprayed coatings?

I'd like to evaluate the effect of thermal cycling on the thermal stability and mechanical properties of a ceramic plasma sprayed coating. In that case, what essential factor(s) could be...

08 September 2014 5,205 8 View

error in running a model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

error in modelling model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

MGL tools

20 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

i have some problem with chtMultiRegionSimpleFoam

--> FOAM FATAL ERROR: Maximum number of iterations exceeded From function Foam::scalar Foam::species::thermo::T(Foam::scalar, Foam::scalar, Foam::scalar, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar) const) const [with Thermo = Foam::hConstThermo >; Type = Foam::sensibleEnthalpy; Foam::scalar = double; Foam::species::thermo = Foam::species::thermo >, Foam::sensibleEnthalpy>] in file /home/ubuntu/OpenFOAM/OpenFOAM-4.1/src/thermophysicalModels/specie/lnInclude/thermoI.H at line 66. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::error::abort() at ??:? #2 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::calculate() at ??:? #3 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::correct() at ??:? #4 ? at ??:? #5 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #6 ? at ??:?

24 March 2021 0 0 View