بررسی اثر مقاوم ساز نانو ذرات اکسید سیلیسیم بر خواص سایشی کامپوزیت پلی اتیلن با وزن مولکولی بسیار بالا تقویت شده با الیاف کربن

نوع مقاله : یادداشت پژوهشی

نویسندگان

1 دانشگاه علم و صنعت ایران

2 علم و صنعت ایران

چکیده

در این پژوهش، فرایند بورسیلیسیم‌دهی همزمان به‌روش سمانتاسیون بسته‌ای بر روی فولاد گرم‌کار H11 انجام شد. عملیّات پوشش‌دهی با ترکیب مشخصی از این دو عنصر در دو دمای °C 1000 و °C 950 به‌مدّت زمان‌های 3 و 6 ساعت انجام شد. مشخصّات قطعه پس از پوشش‌دهی به‌وسیله‌ی میکروسکُپ‌های نوری و الکترونی روبشی، پراش پرتوی ایکس و ریزسختی‌سنجی بررسی شدند. پس از بررسی ساختارهای ایجاد شده، مشخص شد که لایه‌ی پوشش متشکّل از دو لایه است، یک لایه‌ی ترکیبی و یک لایه‌ی نفوذی که حاوی ذرات کاربید حل نشده بود. سختی پوشش‌ها در این نمونه‌ها، در محدوده‌ی 500 تا 700 ویکرز به‌دست آمد. افزون بر این، افزایش دما و زمان پوشش‌دهی بر نوع کاربیدهای حل نشده مؤثر بود.

کلیدواژه‌ها

عنوان مقاله [English]

Investigating the effect of nano-silica on the wear performance of the UHMWPE based composite reinforced with short carbon fibers

نویسندگان [English]

  • Alireza Khavandi 1
  • Mohammadali Sattari 2
  • Mohammad-reza Naimi-Jamal 2
1 Iran University of Science and Technology
2 Iran University of Science and Technology (IUST)
چکیده [English]

In this study, the wear behavior of UHMWPE based hybrid composites reinforced with short carbon fibers and silica nano-particles at room temperature were investigated. The composite samples were fabricated by melt mixing process using the paraffin oil in order to overcome high viscosity of the polymer matrix. Finally, the wear tests were performed. The results of wear tests showed that the weight loss of the composite decreases noticeably in the presence of carbon fibers. It was also shown that the effect of nano-particles depends on their weight percent. The surfaces of the composite samples after the wear tests were investigated using a scanning electron microscope (SEM).

کلیدواژه‌ها [English]

  • UHMWPE
  • wear
  • nano-silica
  • carbon fiber
  • Hybrid
  • Composite
  • manufacturing
  • SEM
  • paraffin oil
  • polymer
  • mico-sized reinforcement
  • particle reinforcement

مراجع

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