Got a tricky question? Receive an answer from students like you! Try us!

Corrosion testing - Essay Example

Only on StudentShare
Engineering and Construction
Pages 4 (1004 words)


Name Instructor Course Due date Key Words: Salt Spray Test, Metal, materials, Corrosion, Effects, Weather, Atmosphere, Conditions, Chambers, A brief description of corrosion testing equipment Corrosion is a hazard in the working of tools of various kinds. The standard method of testing the resistance of corrosion on coated materials is the salt spray testing (Marti et al 51)…

Extract of sample
Corrosion testing

This implies this solution produces a corrosive atmosphere in the chamber. The accepted standard of testing chambers according to the international standards on salt sprays test (ISSST) is four hundred liters. Alternatively, some other solutions can also be applicable when testing corrosion. The test that applies 5% NaCl is the neutral salt spray whereby other solutions appropriate for this chamber include acetic acid. With the use of this solution, the name of the method of testing is acetic salt spray. The other solution that can apply in this case is acetic acid mixed with of copper chloride, which is one of the known corrosion tester is the Q-FOG cyclic corrosion testers. Designs of these instruments vary according to their capability of chambers. They also vary based on the various environments to which they have to operate. Figure 1: An example of a Q-FOQ cyclic corrosion tester. Results or testing of this machine is similar to those of an outdoor testing, which most of the salt spray testers have failed to deliver. The purpose and application of the corrosion testing equipment The desire to maintain use and existence of different machines is a concern for numerous engineering industries. ...
Download paper
Not exactly what you need?

Related Essays

Chromate Conversion Coating replacement
Zhao et al indicates that it is a widely used method especially for A1 alloys in aerospace applications as it is considered to be very effective (51). However, Zhao et al points out that a number of factors including environmental regulations; the requirements for increased service life of airplanes; and the high cost of preventative maintenance has forced the US Air Force to search for other environmentally friendly methods of reducing the rate of corrosion that are also an improvement over the use of chromate (51). Zhao et al also indicates that an understanding of how CCCs protect metal…
25 pages (6275 words)
Corrosion Protection in Offshore Pipelines
Currently there are several techniques used by oil and gas industries to combat offshore corrosion. Corrosion resistant alloys are often used to prevent corrosion, as well as certain pipeline coatings and cathodic protection of pipelines. Offshore monitoring is often executed as a preventative measure, via electrical resistance monitoring, electrochemical methods, hydrogen monitoring, weight-loss coupons, non-destructive testing techniques and analytical techniques. Offshore pigging is also a common practice. Researching and investigating case histories is a crucial way in which industries may…
40 pages (10040 words)
Results and Discussion
After leaving the substance in the test solution for some time, it is weighted to measure the extent of loss in its weight. It is considered to be the effective method of testing the material’s characteristics. In this chapter, a graphical representation of corrosion testing is given. The corrosion testing was performed with the solution of Nacl with the quantity of 0.9%. Ocp vs time A Pictorial Representation of OCP verses Time with sliding and no-sliding depiction. On x and y-axis, allocation of time and potential mV is given. 4.2 Tribocorrosion The second phase of experiment involves…
8 pages (2008 words)
Materials and Corrosion
Crevice Corrosion Corrosion occurring within or adjacent to crevices, which are commonly left at joints, due to small volumes of stagnant corroding fluids is known as crevice corrosion. The most important feature of this type of corrosion is the contact with stagnant solution which takes place in interstices, near seals and in cervices made for nuts and rivet heads. The metals and alloys used in chemical plants and other industrial applications are covered with passive films of protective coatings in order to prevent contact with high concentrations of Cl- and H+ ions. When such places are…
7 pages (1757 words)
Mechanical testing of metals and polymers
2. Experimental Procedure: Test Equipment Material Tested Test Speed mm/min Secant Tensile Strength-Metal Universal Tensile Testing machine 0.1% C Steel 0.4%C Steel 0.8%C Steel 1.15%C Steel Tensile Strength-Plastics Universal Tensile Testing machine HDPE, PP-PE, PVC, PC, Acetal (POM), Nylon (PA66), GRN (PA66+glass fibres) 10, 50 & 500 Pendulum Impact Tests Zwick/Roell Pendulum Impact Tester Polypropylene, PVC Vickers hardness Test Vickers Testing Machine 0.1% C Steel 0.2%C Steel 0.4%C Steel 0.85%C Steel 20 Kg load for () minutes 3. Results Figure 1 Stress-Strain Curve of steel Red 0.1% C Steel…
5 pages (1255 words)
Mechanical testing of metals and polymers
L/Lo where Lo is the initial gage length and ?L is the change in the gage length (L-Lo). Procedure: Hydraulic testing machine, steel, mm/min, force and strain. Results Nr Rm N 0.2% ?break (%) E N/mm3 G Nmm2 1 8303.90 0.1 1903 64.77 24.91 2 13853.22 0.4 1903 141.15 54.29 3 17948.63 0.8 1903 208.40 80.15 4 11098.39 1.15 901 410.65 157.94 Procedure: Hydraulic testing machine, carbon steel, mm/min, stress and strain. Nr Rm 0.2% ?break (%) E N/mm3 G( N/mm2) dL (mm) 1 153 0.1 1.37 100 38.46 2 2 170 0.2 -2.41 -50 -19.23 -4 3 217 0.4 1.91 50 19.23 4 4 251 0.85 1.57 50 19.23 4 Procedure:…
5 pages (1255 words)
Laboratory Testing and Evaluation Report
A theoretical study on their mechanical properties is also made. Samples of both finished materials having 1.2 mm thickness are tested against their mechanical properties which include universal testing and hardness testing. Another study of same grade of material which is kept under different process conditions is also made. Samples of 1.2 mm finished skin rolled SPCC steel versus 1.2 mm annealed SPCC steel were also studied in the same manner. As per discussing the chemical composition of the two materials, JISF (2011) had shown the allowable alloying percentage as given in Table 1. Table 1…
6 pages (1506 words)