What are the health concerns about using NaF in high temperature?

I'm planning to use NaF as avtivitor in pack cementation aluminizing process in high temperature (above 900C). What are the health concerns about using NaF in high temperature?

03 April 2015 3,187 2 View

What's the difference between Ar and H2 atmosphere in aluminizing process like CVD or Pack cementation?

Usually in Pack cementation, Vapor phase or CVD aluminizing process, two kinds of atmospheres are used with donor alloy(e.g. NiAl, FeAl, CrAl) and activator (e.g. NH4Cl): 1. inertia atmosphere...

01 February 2015 8,767 5 View

Can anyone tell me how to reduce the hardness of the platinum layer which is made by eletroplating?

I'm using the Johson Matthey Q-5 salt bath for platinum plating. The bath contains 5g/L Q salt, temperature ia 92 Celsius and pH adjusts to 10.5 by sodium hydroxide. The hardness after...

31 December 2014 1,223 11 View

How do I make sure there are no bubbles in the water lute valve?

I want to use a water lute to balance the pressure in a CVD instrument, the pressure in the chamber is increasing from 1 Pa to more than 1 atm, because this instrument will leak higher than 1 atm,...

11 December 2014 297 4 View

What is POU device for CVD facility?

POU device is usual used in semiconductor industy for cleaning the gas before they enter the centralized exhaust system. Is there anybody know detail about it and explain it to me a little...

11 December 2014 464 0 View

What is the reaction temperature of HCl and FeAl alloy?

Dear all, I'm using pack cemetation method to apply aluminide coating on surface of the alloy with activator NH4Cl, but the pressure of the chamber is not very stable above 800C, so I want to know...

10 November 2014 746 3 View

What is fused salt plating?

What is the difference between fused salt plating and eletroplating, any advantage? Can anyone help me with introducing some books or papers about fused salt plating. I will be very appreciate to...

07 August 2014 5,481 0 View

Why NAl form during aluminizing process by using NH4Cl activitor?

Out pack aluminizng tech and NH4Cl has been use in this process. A layer of AlN form on the surface of the coating at about 1000C and seems to prevent the formation of NiAl.

07 August 2014 3,882 4 View

What's the differences between a phase vapor aluminizing process and pack cementation?

I read from papers that an industralized aluminizing process usually has three forms; chemical vapor deposition, pack cemitation and phase vapor aluminzing processes. The last two are very...

05 June 2014 1,033 3 View

Is there any easy way to get a cross section of the aluminum oxide scale after 10 hours oxidation by using FE-SEM?

I used to bend the coating or scratch the scale off the surface, but the result is not always good, so there must be another way.

02 March 2014 4,782 5 View

Looking for Materials with high thermal expansion coefficient and high temperature resistance?

03 March 2021 8,272 1 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

Waters 2707 HPLC autosampler problem?

I am using a 2707 waters HPLC device. When I try to inject a sample, it says missing plate or rack. I changed the needle and calibrated its position but I still get the same problem. I even get...

02 March 2021 1,408 1 View

Why almost every element would be metallized in sufficiently high pressure and low temperature?

(This statement is from wikipedia, BTW). What is so special about metallic bond that is limiting high-P low-T state of a matter (as long as individual atoms exist, not white dwarf of neutron star...

02 March 2021 3,309 2 View

Research on Supply Chain Management in Indian context?

Hi, I am planning to apply for the PhD degree in the Supply Chain Mgt. with specific area of "Cold Storage warehouses" during Pandemics and wars. Where lock downs and shut downs are frequent....

02 March 2021 285 2 View

Does anyone know HRM channel in a 2 plex QIAGEN Rotor- Gene Q qPCR can be used as a separate channel?

I am going to have 3 different probes in my qPCR work that I am going to do. But I realized that the machine we have in the lab is a Rotor-Gene Q 2plex HRM Platform, saying it has green, yellow,...

01 March 2021 8,544 1 View

I have designed reflectarray element and feeding it though Horn Antenna on HFSS. After full wave simulation, I am not getting desired results?

I have designed reflectarray element to generate OAM beams at 5.8GHz and feeding it though Horn Antenna on HFSS. After full wave simulation, i am not getting desired results i.e Radiation pattern...

01 March 2021 9,701 5 View

Adherance of Polyaniline coating over stainless steel?

Is the electropolymerisation of polyaniline coating over stainless steel (SS) via Cyclic voltammetry technique is really adherant? Else how to improve the adhesion of the coating, whether any...

01 March 2021 8,220 2 View

Any research papers for extraction of nutrient deprivation on macroalgae? Analysed by HPLC-UV and GC/MS. Possibly from macroalgae genus Rhizoclonium?

I am doing my thesis on the nutrient deprivation on the macroalgae Rhizoclonium sp. I will be analysing the levels over a period of roughly 5 days by HPLC-UV and GC/MS. I will be using seawater as...

28 February 2021 6,477 1 View

Is there a method of determining feed digestibility without the need to re-pellet the feed?

I am aiming to determine the ADC values of a commercial fish feed, but I do not have a steam pelleter or extruder available to me. Ideally, the pellets could be coated with some inert marker....

28 February 2021 7,967 3 View