Effect of Applied Pressure on the Tribological Behaviour of Dual Particle Size Rutile Reinforced Lm13 Alloy Composite

2015 ◽  
pp. 755-762 ◽  
Author(s):  
Rama Arora ◽  
Suresh Kumar ◽  
Gurmel Singh ◽  
O. P. Pandey
Keyword(s):  
Particle Size ◽  
Applied Pressure ◽  
Alloy Composite ◽  
Tribological Behaviour

Effect of weight fraction and particle size of CRT glass on the tribological behaviour of Mg-CRT-BN hybrid composites

2017 ◽  
Vol 116 ◽  
pp. 338-350 ◽  
Author(s):  
P.M. Gopal ◽  
K. Soorya Prakash ◽  
S. Nagaraja ◽  
N. Kishore Aravinth
Keyword(s):  
Particle Size ◽  
Hybrid Composites ◽  
Weight Fraction ◽  
Tribological Behaviour

Pressure assisted sintering of Al2O3–Y2O3 glass microspheres: sintering conditions, grain size, and mechanical properties of sintered ceramics

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Anna Prnová ◽  
Jana Valúchová ◽  
Monika Michálková ◽  
Beáta Pecušová ◽  
Milan Parchovianský ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Particle Size ◽  
Hot Pressing ◽  
Pechini Method ◽  
Sol Gel ◽  
Applied Pressure ◽  
Particle Size Analysis ◽  
Size Analysis ◽  
Glass Microspheres ◽  
Amorphous Powders

Abstract Glass microspheres with yttria-alumina eutectic composition (76.8 mol % Al2O3 and 23.2 mol % Y2O3) were prepared by sol-gel Pechini method and flame synthesis with or without subsequent milling. Prepared amorphous powders were studied by X-ray powder diffraction (XRD), particle size analysis (PSA), scanning electron microscopy (SEM) and differential thermal analysis (DTA). Hot pressing (HP), rapid hot pressing (RHP) and spark plasma sintering (SPS) were used to sinter amorphous precursor powders at 1600 °C without holding time (0 min). The preparation process including milling step resulted in amorphous powders with narrower particle size distribution and smaller particle size. All applied pressure assisted sintering techniques resulted in dense bulk samples with fine grained microstructure consisting of irregular α-Al2O3 and Y3Al5O12 (YAG) grains. Milling was beneficial in terms of final microstructure refinement and mechanical properties of sintered materials. A material with the Vickers hardness of HV = (17.1 ± 0.3) GPa and indentation fracture resistance of (4.2 ± 0.2) MPa.m1/2 was prepared from the powder milled for 12 h.

Contact Resistance of Anisotropic Conductive Adhesives

2004 ◽  
Vol 1 (3) ◽  
pp. 194-199 ◽  
Author(s):  
Ranjith Divigalpitiya ◽  
Peter Hogerton
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Applied Pressure ◽  
Surprising Result ◽  
Conductive Adhesives ◽  
Conductive Film ◽  
Plate Separation ◽  
Resistance Forces ◽  
General Size

We analyze the electrical resistance of an anisotropic conductive film (ACF) sandwiched between two conducting plates as a function of applied load by extending a published model of Shi et al [1]. In this analysis we also calculate the plate separation as a function of applied pressure when a collection of particles are trapped between two plates. The case of conducting particles with a general size distribution shows two new important results: (a) we find that the resistance of a bond or a contact is independent of the number of conducting particles under the contact pad when the particle size distribution is Gaussian, which is very much in contrast to the case of uniform sized particles; (b) also, only a very small fraction of conducting particles participate in the electrical conduction of ACF products where the actual particle size distribution can be described as a Gaussian. We show that the experimental data supports the validity of this analysis. While this analysis confirms some of our basic notions of ACF, the surprising result of constant resistance forces us to reevaluate our long-held concept of attaching much importance to the total number of particles in a bond.

Effect of abrasive particle size on tribological behavior of elastomers

2019 ◽  
Vol 234 (3) ◽  
pp. 373-385 ◽  
Author(s):  
F Hakami ◽  
A Pramanik ◽  
AK Basak ◽  
N Ridgway ◽  
MN Islam
Keyword(s):  
Particle Size ◽  
Tensile Strength ◽  
Wear Rate ◽  
Coefficient Of Friction ◽  
Abrasive Particle ◽  
Tribological Behaviour ◽  
Elongation At Break ◽  
Tear Strength ◽  
Wear And Friction ◽  
Abrasive Size

Effect of abrasive particle size on tribological behaviour of different elastomers was investigated experimentally in this study. The size of abrasive particle size was varied from coarse (425 µm) to fine (82 µm). Wear rate and coefficient of friction were calculated and analyzed accordingly followed by the examination of worn surfaces by a scanning electron microscope to unravel the wear mechanism. Experimental results showed that abrasive size had a significant effect on wear and friction behaviour of the elastomers. As the abrasive particle size increased, wear rate and coefficient of friction also increased at different rates and exhibited different wear mechanisms that changed from friction to fatigue and roll formation. Mechanical properties of elastomers such as hardness, tensile strength, tear strength, and elongation at break also contributed to wear and friction. The effect of elongation at break and tensile strength on wear rate is more pronounced at lower abrasive particle size, whereas hardness and tear strength play a pivotal role at the higher abrasive size.

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