Spark plasma sintering of B4C-TiB2 composite: Effect of combustion synthesized nanoparticle on sinterability and mechanical properties

IF 2.1 4区 材料科学 Q2 MATERIALS SCIENCE, CERAMICS
Ozan Coban, Mehmet Bugdayci, Salih Çagri Ozer, Serkan Baslayici, Servet Turan, M. Ercan Acma
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引用次数: 0

Abstract

This study investigated the effects of fine particles with high surface area synthesized by Self-propagating High-Temperature Synthesis (SHS) on the SPS process and the properties of the resulting products. Correlations were established between particle size, SHS product addition, sinterability, and mechanical properties. The products were characterized by measuring shrinkage percentages, relative density, microhardness, elastic modulus, and fracture toughness, which were further correlated with SEM–EDS results. The results revealed that SHS nanoparticles significantly increased fracture toughness, especially with additions above 60%, by reducing average particle size, increasing powder porosity, and adding composite powder. The product exhibited high relative density (99.03%), elastic modulus (464 GPa), and fracture toughness (4.65 MPa.m1/2) when SPS was used on B4C-TiB2 powders containing 80% SHS product at a low temperature of 1550 °C. By adding 80% SHS product, hardness increased by 62% (19.5 GPa) and fracture toughness by 24%, even at low sintering temperatures, thus reducing energy consumption.

放电等离子烧结B4C-TiB2复合材料:燃烧合成纳米颗粒对烧结性能和力学性能的影响
研究了自传播高温合成法(SHS)合成的高比表面积细颗粒对SPS过程和产物性能的影响。建立了颗粒尺寸、SHS产品添加量、烧结性能和力学性能之间的相关性。通过测量收缩率、相对密度、显微硬度、弹性模量和断裂韧性来表征产品,并进一步与SEM-EDS结果相关联。结果表明,SHS纳米颗粒通过减小平均粒径、增加粉末孔隙率和添加复合粉末等方式显著提高了断裂韧性,特别是添加量在60%以上时。该产品具有较高的相对密度(99.03%)、弹性模量(464 GPa)和断裂韧性(4.65 MPa)。在1550℃的低温条件下,SPS对含有80% SHS产物的B4C-TiB2粉末进行处理时,得到了m1/2)。添加80% SHS产品,即使在低烧结温度下,硬度也提高62% (19.5 GPa),断裂韧性提高24%,从而降低了能耗。
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来源期刊
Journal of the Australian Ceramic Society
Journal of the Australian Ceramic Society Materials Science-Materials Chemistry
CiteScore
3.70
自引率
5.30%
发文量
123
期刊介绍: Publishes high quality research and technical papers in all areas of ceramic and related materials Spans the broad and growing fields of ceramic technology, material science and bioceramics Chronicles new advances in ceramic materials, manufacturing processes and applications Journal of the Australian Ceramic Society since 1965 Professional language editing service is available through our affiliates Nature Research Editing Service and American Journal Experts at the author''s cost and does not guarantee that the manuscript will be reviewed or accepted
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