Armin Rajabi

9 Questions 33 Answers 0 Followers

Questions related from Armin Rajabi

What are the effective parameters on the UV absorbance ?

UV spectroscopy is an important tool in analytical chemistry .When UV radiations are absorbed, this results to the excitation of the electrons from the ground state towards a higher energy state....

20 August 2018 4,712 6 View

Does anyone know how we can measure density for a compound with different stoichiometry?

Density is defined as mass per unit volume. The density of the majority of the material is available in the literature. Actually I would like to find the density of TiC0.7N0.3 please let me know.

06 October 2015 3,964 1 View

Does anyone know how we can measurement variation of hardness with grain size?

The hardness of a material is generally related to the grain size through a Hall-Petch equation (HV=Ho+Kd-1/2). So, in a nanomaterial that consists of different size how can find variation of...

28 May 2015 4,504 7 View

Does anybody know how the non-stick coating is fabricated on Al-substrate?

I am looking for the ceramic coating of non-stick that is widely used on Al.

07 September 2014 7,826 3 View

Does anyone have a data base for Raman spectroscopy of TiC, TiN and TiCN?

Raman spectroscopy can be a suitable instrument for analysis of materials. Do you have to have data base? If so I am looking for TiC , TiN and TiCN. Data base can be wavelength, power level of laser

09 July 2014 1,170 1 View

Anyone know of a paper/standard showing necessary pressure for making solid formation of nano powders?

e.g. bulk from the nano powders to test by nano indenter. In order to get mechanical properties nano powders, they should be tested by nano indenter. How much pressure is need to compact nano...

28 January 2014 4,413 1 View

What is the difference between TRS and bending strength?

Is Transverse rupture strength (TRS) used for ceramics? How is it different from bending strength?

24 August 2013 1,344 1 View

Does anybody know what is a good way to measure shrinkage of ceramics?

Usually, after heat treatment at high temperature, ceramics will be faced with a problem of shrinkage. The geometry of of our samples are tablet ( diameter= 13mm, H=2mm)

26 July 2013 8,523 9 View

Does anybody know how the non-stick coating is fabricated on Al-substrate?

I am looking for ceramic coating used on Al-substrate as non-stick and anti wear. Please let me know which coating is most suitable.

20 July 2013 7,218 17 View