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  • Users: Shibuz
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  1. Shibuz

    Addition of Molybdenum on Ni Resist 1

    Friends, Thanks for the help. S Zach
  2. Shibuz

    Pitting, crevise, corrosion fatigue and erosion corrosion

    Friends, Thank you very much for the help. S Zach
  3. Shibuz

    Pitting, crevise, corrosion fatigue and erosion corrosion

    Friends, Thanks for the help. 1. I have read in this discussion groups itself that "carbon steel doesn't have a protective layer like stainless does. So it will corrode over the entire surface in the presence of chlorides etc. With SS, the chlorides chemically react with the chromium oxide...
  4. Shibuz

    Addition of Molybdenum on Ni Resist 1

    Hi, What would the addition of Molybdenum to NiResist 1 do? If Moly is to added, what wt% is necessary to make a difference? Thanks, S Zach
  5. Shibuz

    Pitting, crevise, corrosion fatigue and erosion corrosion

    Thanks for the suggestion. I already did one presentation covering the basics of corrsoion. This is a second take. These were the questions posed during the first presentation.
  6. Shibuz

    Pitting, crevise, corrosion fatigue and erosion corrosion

    Hi, Can someone please help me with the following corrosion questions? I do have a presentation to make about these subjects: 1. Pitting: Can carbon steel pit? or is pitting just a phenomenon of stainless steel? Is Chloride ions the only thing that can cause pitting? 2. Crevise...
  7. Shibuz

    4140 Steel in Downhole parts

    Would 4140 (RC 18-22) be a smart choice for downhole parts? I am worried about corrosion (H2S, CO2, Cl). How will temperature effect the material? I was told to do "phosphate coating" on 4140 to prevent corrosion in downhole environmnets. Is this reccommended? If so, what type of...
  8. Shibuz

    welding 416 SS to ferritic T9

    We have to weld a 416SS head to a T9 (9 chrome - 1 moly) housing material. What is the best material to use for welding these two materials? Thansk
  9. Shibuz

    example of corrosion

    Where can I get examples of corrosion? I am looking for general example of various types of corrosion. Thanks.
  10. Shibuz

    X-Ray Diffraction results

    I do have the following results when we did an x-ray diffraction on a down hole sample. Quartz (SlO2) Trace Calcite (CaCO3) Trace Barite (BaSO4) Trace Mackinawite (FeSO9) 70% Troilite ( FeS) 30% What do I make out of it...
  11. Shibuz

    X-Ray Diffraction Results

    I do have the following results when we did an x-ray diffraction on a down hole sample. Quartz (SlO2) Trace Calcite (CaCO3) Trace Barite (BaSO4) Trace Mackinawite (FeSO9) 70% Troilite ( FeS) 30% What do I make out of it...
  12. Shibuz

    Material Selection for Alaska Weather

    Hello, Our company is looking into an Alaska Project. We are involved in the development of a High Pressure Pumping System capable of operating in temperatures from - 50 Degrees F to + 140 Degrees F. We have to come up with the skid for an outside unit. The material selected should be...
  13. Shibuz

    Maximum Acceptable Limit

    I am interested in finding a table or some information on the maximum acceptable limit of certain chemicals before corrosion. Specifically, I am looking for the limit on H2S, CO2, DO, PH etc...before an alloy could start corroding. I work in a downhole pump manufacturing company, and I need...

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