Effect of particle size on microstructure and mechanical properties of composites produced by ARB process

2011 ◽  
Vol 528 (4-5) ◽  
pp. 2143-2148 ◽  
Author(s):  
Roohollah Jamaati ◽  
Sajjad Amirkhanlou ◽  
Mohammad Reza Toroghinejad ◽  
Behzad Niroumand
Keyword(s):  
Mechanical Properties ◽  
Particle Size ◽  
Microstructure And Mechanical Properties ◽  
Effect Of Particle Size ◽  
Properties Of Composites

Study on Effect of Particle Size of Matrix and Reinforcement on Properties of Iron Matrix Composites

2012 ◽  
Vol 182-183 ◽  
pp. 328-331
Author(s):  
Yu Fang Yang ◽  
Kang Ju Li
Keyword(s):  
Mechanical Properties ◽  
Particle Size ◽  
Matrix Composites ◽  
Hot Press ◽  
Iron Matrix ◽  
Direct Heating ◽  
Effect Of Particle Size ◽  
Properties Of Materials ◽  
Hot Press Sintering ◽  
Properties Of Composites

The effect of particle size of iron and size of reinforce particle on properties of materials was studied systematically by the specimen current direct heating dynamic hot press sintering. It is found that mechanical properties of composites increase with the increasing particle size of iron. The properties of SiCp/Fe composites firstly increase and decrease with particle size of SiC and properties are better when size is 15μm.

scholarly journals Effect of particle size of Y2O3-Al2O3 additives on microstructure and mechanical properties of Si3N4 ceramic balls for bearing applications

2021 ◽  
Vol 15 (3) ◽  
pp. 297-305
Author(s):  
Jing Zhang ◽  
Wenxue Wang ◽  
Feng Sun ◽  
Weiru Zhang ◽  
Boheng Li ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Particle Size ◽  
Relative Density ◽  
Si3n4 Ceramic ◽  
Sintering Additives ◽  
Microstructure And Mechanical Properties ◽  
Indentation Fracture Toughness ◽  
Effect Of Particle Size ◽  
Gas Pressure Sintering ◽  
Si3n4 Matrix

Si3N4 ceramic balls were prepared by gas pressure sintering with Y2O3 and Al2O3 as sintering additives. The effects of particle size of Y2O3-Al2O3 additives on densification, microstructure and mechanical properties of Si3N4 ceramic balls were investigated. The reliability of Si3N4 ceramic balls was evaluated through the Weibull modulus. The results showed that Si3N4 ceramic balls containing nanosized Y2O3-Al2O3 additives have a higher relative density and better comprehensivemechanical properties compared with the samples containing microsized additives, with relative density of 98.9 ? 0.2%TD, Vickers hardness of 14.7 ? 0.1GPa, indentation fracture toughness of 6.5 ? 0.1MPa?m1/2 and crushing strength of 254 ? 8.5MPa. The more homogeneous and extensive dispersion of the nanosized sintering additives in the Si3N4 matrix is the main reason for the enhancement in density and mechanical properties of the Si3N4 ceramic balls.

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