PROPERTIES ASSESSMENT IN WIZRC COMPOSITE FABRICATED THROUGH HOT-PRESS AND REACTION SINTERING

  • سال انتشار: 1390
  • محل انتشار: سومین کنفرانس بین المللی مواد فوق ریزدانه و نانوساختار
  • کد COI اختصاصی: UFGNSM03_008
  • زبان مقاله: انگلیسی
  • تعداد مشاهده: 342
دانلود فایل این مقاله

نویسندگان

MOSTAFA ROOSTA

Department of Materials Engineering, Malek Ashtar University of Technology, Tehran, P. O. Box ۱۵۸۷۵-۱۷۷۴, Iran

HAMDREZA BAHLARVANDI

Department of Materials Engineering, Malek Ashtar University of Technology, Tehran, P. O. Box ۱۵۸۷۵-۱۷۷۴, Iran,

ABDIZADE HOSSEIN

School of Metallurgy and Materials Engineering, University of Tehran, Tehran, P. O. Box ۱۴۳۹۵-۵.۵۳, Iran,

چکیده

In this study the WIZrC composite fabricated via hot-press and reaction sintering of two precursors, conventional ZrO/WC and novel ZrSiO4/WC, has been compared with each other. At first W and ZrC powders were hot-pressed and after that WC/ZrO, and WC/ZrSiO, mixture were reaction sintered to produce the composite. The mechanical properties of produced composites including the density, hardness, modulus of elasticity and flexural strength were evaluated to compare the processes. The results show that the W-ZrC composite fabricated through hot-press, possesses better density and mechanical properties, however the cost of process in reaction sintering of WC/ZrSiO4 is much cheaper. Since reactivity is the main problem in sintering of micronized powders, the starting powders were selected in nano size as well to see the difference. In the case of using nano powders the amount of unreacted and unwanted phases reduced and the reaction progressed better.

کلیدواژه ها

WZrC composite, Hot pressing, Reaction Sintering, Nano powders

مقالات مرتبط جدید

اطلاعات بیشتر در مورد COI

COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.

کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.