You are being redirected because this document is part of your ASTM Compass® subscription.
    This document is part of your ASTM Compass® subscription.

    If you are an ASTM Compass Subscriber and this document is part of your subscription, you can access it for free at ASTM Compass
    Volume 43, Issue 1 (January 2015)

    Comparison of Four Different Methods to Determine the Hardness of Plasma-sprayed Cr3C2–NiCr Coating by Nano-indentation

    (Received 25 October 2013; accepted 12 February 2014)

    Published Online: 22 January 2015

    CODEN: JTEVAB

      Format Pages Price  
    PDF (1.5M) 7 $25   ADD TO CART

    Cite this document

    X Add email address send
    X
      .RIS For RefWorks, EndNote, ProCite, Reference Manager, Zoteo, and many others.   .DOCX For Microsoft Word



    Abstract

    A Cr3C2–NiCr coating with a thickness of 200 μm was deposited on an AISI 1045 steel substrate using a supersonic plasma-spray technique. The hardness of the Cr3C2–NiCr coating was characterized by a nano-indenter equipped with an atomic force microscope (AFM). The AFM images indicated that the nano-indents on the Cr3C2–NiCr coating exhibited significant “pile-up” deformation. Such pile-up behavior needs to be taken into account in hardness determination because the pile-up height accounts for a large proportion of the indentation depth. In this paper, four different methods are compared to determine the hardness of the Cr3C2–NiCr coating: the Oliver–Pharr method, two work-of-indentation methods (total work of indentation and plastic work of indentation), and an AFM analysis method. The results show that the Oliver–Pharr and work-of-indentation methods overestimated the hardness, and the AFM analysis method is considered as a more accurate method for determining the hardness of the Cr3C2–NiCr coating.


    Author Information:

    Zhu, Li-na
    School of Engineering and Technology, China Univ. of Geosciences, Beijing,

    National Key Lab for Remanufacturing, Academy of Armored Forces Engineering, Beijing,

    Xu, Bin-shi
    National Key Lab for Remanufacturing, Academy of Armored Forces Engineering, Beijing,

    Wang, Hai-dou
    School of Engineering and Technology, China Univ. of Geosciences, Beijing,

    Wang, Cheng-biao
    School of Engineering and Technology, China Univ. of Geosciences, Beijing,


    Stock #: JTE20130278

    ISSN:0090-3973

    DOI: 10.1520/JTE20130278

    Author
    Title Comparison of Four Different Methods to Determine the Hardness of Plasma-sprayed Cr3C2–NiCr Coating by Nano-indentation
    Symposium ,
    Committee E28