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 bit.
Thanks for your kind answer~
To some expert who may interested I'm doing pack cementation aluminizing by using FeAl alloy of different composition. In order to predict the coating composition of the coating, I have to know...
03 April 2015 9,168 2 View
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
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
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
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
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 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
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
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
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
I'm targeting to deploy a mesh network and manually configure MANET routing protocols. I'm preparing scenarios, architectures, and hard devices needed to do that. Are there some step-by-step...
03 March 2021 1,931 5 View
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
In some materials, properties such as band gap, thermal conductivity differ along different crystallographic axes. What are the basics?
01 March 2021 1,923 3 View
Hi Community, I'm facing the issue of integration/compiling a new routing protocol in a WSN simulator. The final goal is to successfully add, configure this routing protocol in hardware devices...
01 March 2021 9,332 6 View
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
I have a tank which contains natural gas at 250 Bar and 293 Kelvin. I want to cool the gas in a dry-ice cooling bath to about 195 Kelvin. The gas will flow in a copper-tube through the bath with a...
27 February 2021 8,128 1 View
Hi Guys. I'm a mechanical engineer and have a bit trouble, would be very glad if you could help me with my questions. I have a pressurized tank which contains Natural Gas at 200 Bar and 293...
26 February 2021 6,253 3 View
I am trying to obtain the response and recovery times for my gas sensor device. It appears the the response/recovery times are primarily dependant on the flow rate of the gas I inject into the...
26 February 2021 1,511 3 View
Hi all The question is related to TGA(Thermogravimetric analysis). Thermal degradation easily understood but why do samples weight decrease? altough just binding is broked, the weight of...
26 February 2021 1,100 5 View
Dear All, We are using Autodesk cfd to calculate the air flow in a single sided naturally ventilated room, where air flow depends only on buoyancy due to temperature difference between inside and...
25 February 2021 9,602 4 View