Nickel Definition and 42 Threads

I ask the foundry to cast nickel alloys and I took a piece metal to do a chemical test. The element composition of the nickel alloy is Ni 70% Cr 12% Fe 1.2% Mo 2.5%...so far they all are in the allowable range. But I found the alloy also contains W 0.004% ! Is this the normal condition ? ? I...

Hume–Rothery rules seem to be moderately satisfied for nickel to readily dissolve in silver. Silver has a radius of 144, valence of 1 and an electronegativity of 1.93. Nickel has a radius of 124, valence of 2 and an electronegativity of 1.91. Both elements have a fcc crystal structure. I read...

Also how bullet proof is it? I know it is a titanium nickel alloy so I’m guessing it may be strong with the titanium in it.

I know it's a common question but I've found no answers online so far. My professor has made a point out of saying that fusion reactions after iron and nickel do release energy but just not enough to keep the star from imploding. This didn't make sense to me. How would fission release energy if...

Good day, everyone. I'm looking for some iron (Fe) and nickel (Ni) foams for a project I'm working on. Any help to find a vendor with affordable pricing is much appreciated. Thank you.

Hi,My professor introduced this question (attached files) to us a couple weeks ago and gave some brief explanation saying that even though our mass will reduce our muscles should be relatively stronger than our bigger form and we should be able to simply jump out of the blender. I was wondering...

Hi, I am conducting some experiments with the electroless nickel (EN) coating of the free machining brass (high lead contain material, which is not good for coating but I must use this material). After surface cleaning and etching procedure, once the brass is submerged in the EN coating...

Hi, I am conducting the experiments with the electroless nickel plating of the brass (CZ121). I have read a lot of the literature about this process prior to the lab tests. All brass surface cleaning procedures that I have came across involve the electroless cleaning (I understand why)...

Hi, I have a brass components (brass grade CZ121) which require electroless nickel plating (not electroplating). I cannot get electroless nickel coating for my brass component from regular coating companies because of its complex geometry. Along with air agitation, special jig is required to...

Hi, We are doing a gear box for a two wheeler (for the first time). Most of our benchmarks are of Suzuki and Honda bikes. All their gears are made of SCM420. Surprising part is these gear teeth are formed by cold forging. No machining at all! Now, I was comparing the chemical composition of...

Homework Statement Homework EquationsThe Attempt at a Solution If a metal was to plate out, it means nickel is a stronger reductant therefore more negative standard reduction potential. 3 metals have a higher standard reduction potential so they will are weaker reductants than nickel. So is...

hi chemists, my chemistry is a bit rusty. i am doing some basic DIY zinc plating using a acid solution with some zinc sulfate in solution. basic recipe is like this: net 2L Epsom Salt 128 gram Zinc Sulfate 43 gram <-- use the ~99% pure stuff White Vinegar 85 ml Sugar 27 gram Tap Water 1915 ml...

Dear PF Forum, I think I have asked too many question for one day. I'm trying to understand antioxidant and free radicals. But, first I'd like to understand oxidation number. The oxidation number for hydrogen is +1 or -1. I can understand that. Either Hydrogen must lost one electron or gains one...

I'm going to weld nickel plates/tabs to 18650 cells. Each two batteries will be welded together with a nickel plate. In the center of the nickel plate will be a copper wire to take the 20 amp current flowing from the two cells at 10 amps per cell. Since I have .2 mm thick nickel plates, to get...

An unfortunate incident happened at our triple effect caustic evaporator (32w.t% to 51w.t%). The third effect (highlighted red) where major steam (~12-13bar depending on flowrate) assisted evaporation take place, here for some reason Ni tubes get severely collapsed, while the plant was offline...

Hi, I wish to make Ni5Ga3 for use in an experiment, it needs to be in powder form. Please could someone direct me to a place where the methodology can be found? I usually order chemicals online, but my supplier (Sigma) does not have this compound so I need to make it. Also I need to consider...

Homework Statement A nickel pole is put in an AgNO3 solution with volume 50ml and concentration 0.1 mol/litre until the concrentration is 0.02 mole/litre. Find the mass of Ag that is put around the Nickel pole. Homework Equations 2AgNo3+Ni->Ni(NO3)2+2Ag number of moles= concrentration*volume...

Homework Statement From WebAssign: One mole of nickel (6.02e23 atoms) has a mass of 59 g, and its density is 8.9 g/cm3. You have a bar of nickel 2.44 m long, with a square cross section, 1.8 mm on a side. You hang the rod vertically and attach a 45 kg mass to the bottom, and you observe that...

How far down can a nickel ball of radius r and temperature Tn melt into the ice block of temperature Ti? Watch the video and state your assumtpions...

Obviously there are MANY differences, but I'm curious about one in particular. In an article I read, the creator used NiMH batteries because of their high charge density, but also because they do not require a charge controller and voltage regulator in the circuitry. Why is this, and is there...

Homework Statement (a) Show maximum energy transferred in compton scattering is as such. (b) Identify what the peaks are and why some decays are suppressed. (c) How do you distinguish between these 2 decays[/B] Homework EquationsThe Attempt at a Solution Part(a) Bookwork. For completeness...

What I need to figure out: We did a gravimetric analysis lab and I have masses for the DMG-Ni complexes that we recovered but I need to find the percent nickel in each sample. Relevant Equations: I believe you take the mass of the DMG-Ni complex sample and multiply that by the mass ratio of...

So, WTH is going on here? I received this otherwise ordinary-seeming nickel as change for my lunch today. It appears to be made of gold (plated?). I didn't make the scratches on it; my guess would be that some other curious individual was as confused as I am and decided to see if it was just...

Homework Statement For nickel, which has an atomic magnetic moment of 0.61 and an atomic weight of 58.7, calculate the magnetic moment per kilogram of the material Homework Equations None given The Attempt at a Solution Do I not need density to use formula for saturation...

Hi, I am trying to work out if a small magnet can be used to hold a thin sample that I have. The sample is flat and about 10mm x 10mm in size. The sample is a layer of copper, with nickel plated on that. There is then a gold coating on the nickel. The copper is 0.05mm thick, the nickel 0.005mm...

As I understand it, if Hubble was turned on the Earth in a geo-stationary orbit it would struggle to pick out a couple of tanks on the ground. So how large would a telescopic satellite need to be (geo-stationary) to pick out a nickel on the ground? Is it even technically possible? I gather...

Homework Statement I have a question in my coursework where I don't know where to start. I've got Nickel decaying post the explosion, I've got a time t, I've got an energy release per nucleus of Nickel, I've got a decay constant, I've got a light curve decay half life, and I've got a...

Nickel allergy is a very common allergy. It causes contact dermatitis. But why is it allergenic, being a metal. Recall that allergies are caused by an immune response. What exactly are you reacting to -- the nickel metal itself??

Homework Statement nickel weights 28.2g and is heated to 100°C 150g water at 13.5°C After the nickel is placed in the water, the final temperature of the metal and water is 25°C. Find the specific heat capacity of nickel Homework Equations Q=mcΔT The Attempt at a Solution...

Hi everyone! I'm looking to separate nickel from a meteorite sample and I have a pretty solid plan... however I'd like to know if there are any disadvantages of using the following methods: Quinoxoline Complexation with Spectrophotometric Determination (using pre-separation to remove...

Homework Statement I've done 2 experiments, one was to find the specific heat of nickel and the other was to find the latent heat of fusion. For the nickel experiment, it involves heating the nickel in a test tube in a water bath, and then transferring the pellets to a Styrofoam cup. With...

Hello; Why are only iron, cobalt and nickel magnetic, and not any other material? Is it due to their unique electron configurations, or due to something else? Thanks.

Please, help me with this: Homework Statement A nickel coin with diameter 2 cm and thickness 2 mm starts to roll with no friction on a horizontal plane with spped 10 cm/s. At 55.2 cm from the beginning the plane is inclined up. For the coin to go up to height max= 0.5 mm, what should be the...

First off, maybe this should have gone in the Material Engineering thread, but since it is so common in the EE field...well, I justified it. I have an aluminum housing which gets plated with Ag over Ni. Once received, the housing goes through the following process: Cleaning (alcohol...

Homework Statement A hanging nickel wire with diameter 0.13 cm is initially 2.6 m long. When a 139 kg mass is hung from it, the wire stretches an amount 1.33 cm. A mole of nickel has a mass of 59 grams, and its density is 8.9 g/cm3. Homework Equations a) What is the length of an...

I'm curious as to why there aren't heavier metals in the Earth's core than iron and nickel. Why those two? Anyone have any insight?

Homework Statement A 1938-nickel has a diameter of 2.11×10-2 m, a thickness of 1.95×10-3 m, and weighs 4.94×10-2 N. What is its density? Homework Equations density=m/v ? or density =w/vg The Attempt at a Solution cant find the volume, I feel like I should drop out of university...

hi guys. I need some basic information about a pump that will be able to transport a nickel slurry up around 1-2m high. the mass flow rate of the slurry is 27 kg/s with a density of 1218 kg/m^3. the temperature of the slurry is 25 deg c. What is the best type of pump to use in this...

Homework Statement Which two of the following could be used to produce crystals of nickel? A Addition of a piece of copper to a NiSO4 B Addition of a piece of zinc to a NiSO4 solution. C Addition of a piece of potassium to a NiSO4 solution. D Electrolysis of molten NiSO4. Homework Equations...

why adding copper to nickel result in reduced magnetism of nickel? :confused:

how do you work out the amount of mole Chlorine ions in 13.4g of nickel chloride(NiCl2). i don't know how to use the n=m/M with ions?

What *is* raney nickel? And, what different kinds of "raney nickel" are there?