Rana Hirzallah

9 Questions 28 Answers 0 Followers

Questions related from Rana Hirzallah

How can I calculate the resistance from EIS?

I found that the perfect circuit that fits my data is R(R(Q(RQ))) and I want to calculate the Rp so I can calculate the corrosion current density using the equation icorr=B/Rp. However, I do not...

05 May 2014 419 23 View

How to dissolve sodium hyaluronate faster?

I am trying to dissolve 2.3g/l of sodium hyaluronate in phosphate buffer saline. However, it is taking me two days to dissolve. I am wondering if somebody knows a way to dissolve it faster. I...

04 April 2014 8,388 6 View

Why do we use negative potential when we want to deposit and positive potential for surface cleaning?

How can we know that the surface has been cleaned?

01 January 2014 6,835 7 View

What is the passive layer composition for Co? Is it CoO? How strong is it?

With regards to CoCrMo alloy, the passive layer is mainly Cr2O3 but I would like to know what is the passive layer for Co? Is it CoO? How strong is it?

01 January 2014 5,075 3 View

Why is Cr the main constituent of the oxide layer of CoCrMo?

Even though Cr is not the main component of this alloy, Co is the main constituent but the passive layer is Cr2O3 mainly and Cr(OH)3.

01 January 2014 7,358 2 View

Can I use a glass container for immersion tests for a solution with protein?

My solution has bovine serum albumin. Should I use plastic or glass container for the immersion test? Does protein adsorbs on glass?

01 January 2014 9,849 8 View

What is the charge of the oxide layer?

I am interesting in studying the interaction between the oxide layer and Po-3 for the implants. Po has a negative charge does oxide layer has a positive charge or the interaction is due to...

01 January 2014 4,324 2 View

What is the difference between the oxide layer and the passive film?

Are they the same? Does there composition differ?

01 January 2014 1,388 7 View

Does anyone have experience with the Open circuit potential change in the same solution for the same material?

I used to run OCP for one hour but I have noticed it is not enough. Therefore, I run it for two hours. It was working perfectly and my solution has stabilized. However, for the last two...

01 January 2014 5,687 19 View