INVESTIGATING THE EFFECT OF SIC AND B4C AND PRESSURELESS SINTERING TEMPERATURE ON MECHANICAL PROPERTIES AND ISOTHERMAL OXIDATION RESISTANCE OF ZRB2-SIC-B4C NANOCOMPOSITES

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razmjoo Ali; MASHHADI MEHRI

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Journal: CERAMIC SCIENCE & ENGINEERING Year:2017 | Volume:6 | Issue:2 Page(s): 73-83

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Title

INVESTIGATING THE EFFECT OF SIC AND B4C AND PRESSURELESS SINTERING TEMPERATURE ON MECHANICAL PROPERTIES AND ISOTHERMAL OXIDATION RESISTANCE OF ZRB2-SIC-B4C NANOCOMPOSITES

Author(s)

razmjoo Ali | MASHHADI MEHRI | Issue Writer Certificate

Keywords

NANOCOMPOSITESQ2

PRESSURELESS SINTERINGQ2

ZRB2 - B4CQ2

MECHANICAL PROPERTIESQ2

Abstract

ZrB2 is a ultra-high temperature ceramic (UHTC' s) with a high melting point of over 3040 ° C with unique properties. Of the major problems with ZrB2 is its weakness of sinterability, that in this study adding SiC in micron and nano as a secondary phase and B4C as an additive tried to overcome this problem. Systematic studies were performed on the PRESSURELESS SINTERING of ZrB2 –SiC NANOCOMPOSITES. At first changes in particle size were investigated as a result of different milling times and optimization of this time. Then the effect of different weights of SiC micron and nano with addition of B4 C was investigated. Samples were pressurelessly sintered at 2050oC, 2100oC, 2150oC and 2200oC for one hour. ZrB2 –SiC NANOCOMPOSITES with 10%wt nano SiC and 3%wt B4 C have an average hardness of 14.85±0.5 GPa and toughness around 3.8 MPam1/2 . At the final stage, the samples were oxidized at 1500 ºC in the air atmosphere and appearance and weight variations were investigated. The results showed that the addition of B4C is not only useful for sintering but also useful for oxidation resistance.

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APA: Copy

razmjoo, Ali, & MASHHADI, MEHRI. (2017). INVESTIGATING THE EFFECT OF SIC AND B4C AND PRESSURELESS SINTERING TEMPERATURE ON MECHANICAL PROPERTIES AND ISOTHERMAL OXIDATION RESISTANCE OF ZRB2-SIC-B4C NANOCOMPOSITES. CERAMIC SCIENCE & ENGINEERING, 6(2 ), 73-83. SID. https://sid.ir/paper/227840/en

Vancouver: Copy

razmjoo Ali, MASHHADI MEHRI. INVESTIGATING THE EFFECT OF SIC AND B4C AND PRESSURELESS SINTERING TEMPERATURE ON MECHANICAL PROPERTIES AND ISOTHERMAL OXIDATION RESISTANCE OF ZRB2-SIC-B4C NANOCOMPOSITES. CERAMIC SCIENCE & ENGINEERING[Internet]. 2017;6(2 ):73-83. Available from: https://sid.ir/paper/227840/en

IEEE: Copy

Ali razmjoo, and MEHRI MASHHADI, “INVESTIGATING THE EFFECT OF SIC AND B4C AND PRESSURELESS SINTERING TEMPERATURE ON MECHANICAL PROPERTIES AND ISOTHERMAL OXIDATION RESISTANCE OF ZRB2-SIC-B4C NANOCOMPOSITES,” CERAMIC SCIENCE & ENGINEERING, vol. 6, no. 2 , pp. 73–83, 2017, [Online]. Available: https://sid.ir/paper/227840/en

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