rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    title: Development of TiC/Ni-P-hBN composite coating for high temperature triboligical applications
  name:
    name part: Adeyemi, Bello Kamilu
    role:
      role term: creator
  name:
    name part: International Islamic University Malaysia
    name part: Kulliyyah of Engineering
  genre: Theses, IIUM local
  origin info:
    place:
      place term: my
    place:
      place term: Gombak, Selangor
    publisher: Kulliyyah of Engineering, International Islamic University Malaysia
    date issued: 2017
  language:
    language term: eng
  physical description:
    extent: xxii, 263 leaves : ill. ; 30cm.
  abstract: Low alloy steel (LAS) is extensively used in many structural applications due to its attractive properties and low cost. However, this alloy steel suffers from low hardness and poor wear resistance that limits its usage in many tribological applications without surface treatment. Titanium carbide (TiC) composite coating has demonstrated a high potential for developing hard and wear-resistant surface layers on LAS working under mild sliding conditions. However, such surfaces would need further improvement to meet the severe condition of an advanced mechanical system which requires high working temperature and long life. Since h-BN ceramic is a promising solid lubricant at an elevated temperature, the possibility of enhancing the sliding interface of conventional TiC composite coating with the addition of hBN is therefore explored in this study. The surface of hBN lubricant powder is first modified by electroless Ni-P co-deposition process, with the goal of increasing its wettability property and inhibiting its decomposition at high temperature. The overall investigation consists of electroless Ni-P-hBN lubricant development; development of TiC-based composite coating with three schemes (viz; TiC, TiC/hBN and TiC/Ni-P-hBN) using powder preplacement and tungsten inert gas (TIG) torch melting technique; parametric investigation of the composite coatings with Taguchi S/N ratio and GRA approach to optimize surface coating characteristics (surface hardness, wear rate, and friction coefficient); and finally, evaluation of the performance integrity of the optimized surfaces at various temperatures from room temperature to 800 oC. The Surface morphology of the as-deposited Ni-P-hBN powder indicates successful deposition of Ni-P composite film on the surface layer of hBN. Validation of the Taguchi's predictive model and optimal parameters for surface responses of the three composite coatings show that their prediction accuracy error is within accepted limit of 2.71 to 4.7 %. W…
  note: by Bello Kamilu Adeyemi
  note: Thesis (Ph.D)--International Islamic University Malaysia, 2017.
  note: Includes bibliographical references (leaves 234-251).
  subject:
    geographic code: a-my---
  classification: TA491
  identifier: http://studentrepo.iium.edu.my/handle/123456789/4688
  record info:
    record content source: UIAM
    record creation date: 170308
    language of cataloging:
      language term: eng