Cargando…
The Effect of Particle Shape on Sintering Behavior and Compressive Strength of Porous Alumina
Alumina particles with different shapes, such as sphere, rod, and disk, were examined for the sintering behavior and compressive strength of partially sintered porous alumina. While both the spherical and disk-like particles were packed well to the relative density of 61.2–62.3%, the packing density...
Autores principales: | , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2018
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6073734/ https://www.ncbi.nlm.nih.gov/pubmed/29973547 http://dx.doi.org/10.3390/ma11071137 |
_version_ | 1783344255555600384 |
---|---|
author | Miyake, Kimiya Hirata, Yoshihiro Shimonosono, Taro Sameshima, Soichiro |
author_facet | Miyake, Kimiya Hirata, Yoshihiro Shimonosono, Taro Sameshima, Soichiro |
author_sort | Miyake, Kimiya |
collection | PubMed |
description | Alumina particles with different shapes, such as sphere, rod, and disk, were examined for the sintering behavior and compressive strength of partially sintered porous alumina. While both the spherical and disk-like particles were packed well to the relative density of 61.2–62.3%, the packing density of rod-like particles was only 33.5%. The sintering rate of alumina particles increased in the order of disk < rod < sphere. The compressive strength of sintered porous alumina was higher for the spherical particles than for the rod-like and disk-like particles. The uniform distribution of the applied load over many developed grain boundaries contributed to the increase in the compressive strength for the spherical particles. The applied load concentrated on a few grain boundaries of rod-like or disk-like particles, caused fracture at a low compressive stress. |
format | Online Article Text |
id | pubmed-6073734 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-60737342018-08-13 The Effect of Particle Shape on Sintering Behavior and Compressive Strength of Porous Alumina Miyake, Kimiya Hirata, Yoshihiro Shimonosono, Taro Sameshima, Soichiro Materials (Basel) Article Alumina particles with different shapes, such as sphere, rod, and disk, were examined for the sintering behavior and compressive strength of partially sintered porous alumina. While both the spherical and disk-like particles were packed well to the relative density of 61.2–62.3%, the packing density of rod-like particles was only 33.5%. The sintering rate of alumina particles increased in the order of disk < rod < sphere. The compressive strength of sintered porous alumina was higher for the spherical particles than for the rod-like and disk-like particles. The uniform distribution of the applied load over many developed grain boundaries contributed to the increase in the compressive strength for the spherical particles. The applied load concentrated on a few grain boundaries of rod-like or disk-like particles, caused fracture at a low compressive stress. MDPI 2018-07-04 /pmc/articles/PMC6073734/ /pubmed/29973547 http://dx.doi.org/10.3390/ma11071137 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Miyake, Kimiya Hirata, Yoshihiro Shimonosono, Taro Sameshima, Soichiro The Effect of Particle Shape on Sintering Behavior and Compressive Strength of Porous Alumina |
title | The Effect of Particle Shape on Sintering Behavior and Compressive Strength of Porous Alumina |
title_full | The Effect of Particle Shape on Sintering Behavior and Compressive Strength of Porous Alumina |
title_fullStr | The Effect of Particle Shape on Sintering Behavior and Compressive Strength of Porous Alumina |
title_full_unstemmed | The Effect of Particle Shape on Sintering Behavior and Compressive Strength of Porous Alumina |
title_short | The Effect of Particle Shape on Sintering Behavior and Compressive Strength of Porous Alumina |
title_sort | effect of particle shape on sintering behavior and compressive strength of porous alumina |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6073734/ https://www.ncbi.nlm.nih.gov/pubmed/29973547 http://dx.doi.org/10.3390/ma11071137 |
work_keys_str_mv | AT miyakekimiya theeffectofparticleshapeonsinteringbehaviorandcompressivestrengthofporousalumina AT hiratayoshihiro theeffectofparticleshapeonsinteringbehaviorandcompressivestrengthofporousalumina AT shimonosonotaro theeffectofparticleshapeonsinteringbehaviorandcompressivestrengthofporousalumina AT sameshimasoichiro theeffectofparticleshapeonsinteringbehaviorandcompressivestrengthofporousalumina AT miyakekimiya effectofparticleshapeonsinteringbehaviorandcompressivestrengthofporousalumina AT hiratayoshihiro effectofparticleshapeonsinteringbehaviorandcompressivestrengthofporousalumina AT shimonosonotaro effectofparticleshapeonsinteringbehaviorandcompressivestrengthofporousalumina AT sameshimasoichiro effectofparticleshapeonsinteringbehaviorandcompressivestrengthofporousalumina |