Production and characterization of zirconia structures with a porous surface

Stephanie Roedel; Joana Mesquita-Guimarães; Júlio C.M. Souza; Filipe S. Silva; Márcio C. Fredel; Bruno Henriques

doi:10.1016/j.msec.2019.03.087

Production and characterization of zirconia structures with a porous surface

Stephanie Roedel, Joana Mesquita-Guimarães, Júlio C.M. Souza, Filipe S. Silva, Márcio C. Fredel, Bruno Henriques^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

The aim of this study was to produce zirconia structures with a porous surface by the dip coating technique and assess the mechanical properties of the structures as well as the integrity of the porous layers. Surface porous layers with homogenous and graded porosity were produced over zirconia substrate discs using zirconia powders with different average sizes (d ₅₀ = 40 μm; d ₅₀ = 70 μm and d ₅₀ = 100 μm) and without pore forming fugitive phases. Specimens were inspected using Scanning Electron Microscopy. Bending strength of specimens was obtained from biaxial flexural tests (B3B). Porous layers were successfully produced on zirconia discs substrates and the bending strength of these specimens were ~35% lower than uncoated specimens. Delamination occurred especially in layers with higher thickness and made of bigger particles. Practical application examples were provided in this paper showing the versatility of these porous surfaces in the production of multifunctional surfaces for stronger interfaces.

Original language	English
Pages (from-to)	264-273
Number of pages	10
Journal	Materials Science and Engineering C
Volume	101
DOIs	https://doi.org/10.1016/j.msec.2019.03.087
Publication status	Published - Aug 2019
Externally published	Yes

Keywords

Dip coating
Mechanical properties
Porous layers
Porous surface
Zirconia

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10.1016/j.msec.2019.03.087

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title = "Production and characterization of zirconia structures with a porous surface",

abstract = " The aim of this study was to produce zirconia structures with a porous surface by the dip coating technique and assess the mechanical properties of the structures as well as the integrity of the porous layers. Surface porous layers with homogenous and graded porosity were produced over zirconia substrate discs using zirconia powders with different average sizes (d 50 = 40 μm; d 50 = 70 μm and d 50 = 100 μm) and without pore forming fugitive phases. Specimens were inspected using Scanning Electron Microscopy. Bending strength of specimens was obtained from biaxial flexural tests (B3B). Porous layers were successfully produced on zirconia discs substrates and the bending strength of these specimens were ~35% lower than uncoated specimens. Delamination occurred especially in layers with higher thickness and made of bigger particles. Practical application examples were provided in this paper showing the versatility of these porous surfaces in the production of multifunctional surfaces for stronger interfaces.",

keywords = "Dip coating, Mechanical properties, Porous layers, Porous surface, Zirconia",

author = "Stephanie Roedel and Joana Mesquita-Guimar{\~a}es and Souza, {J{\'u}lio C.M.} and Silva, {Filipe S.} and Fredel, {M{\'a}rcio C.} and Bruno Henriques",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier B.V.",

year = "2019",

month = aug,

doi = "10.1016/j.msec.2019.03.087",

language = "English",

volume = "101",

pages = "264--273",

journal = "Materials Science and Engineering C",

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T1 - Production and characterization of zirconia structures with a porous surface

AU - Roedel, Stephanie

AU - Mesquita-Guimarães, Joana

AU - Souza, Júlio C.M.

AU - Silva, Filipe S.

AU - Fredel, Márcio C.

AU - Henriques, Bruno

PY - 2019/8

Y1 - 2019/8

N2 - The aim of this study was to produce zirconia structures with a porous surface by the dip coating technique and assess the mechanical properties of the structures as well as the integrity of the porous layers. Surface porous layers with homogenous and graded porosity were produced over zirconia substrate discs using zirconia powders with different average sizes (d 50 = 40 μm; d 50 = 70 μm and d 50 = 100 μm) and without pore forming fugitive phases. Specimens were inspected using Scanning Electron Microscopy. Bending strength of specimens was obtained from biaxial flexural tests (B3B). Porous layers were successfully produced on zirconia discs substrates and the bending strength of these specimens were ~35% lower than uncoated specimens. Delamination occurred especially in layers with higher thickness and made of bigger particles. Practical application examples were provided in this paper showing the versatility of these porous surfaces in the production of multifunctional surfaces for stronger interfaces.

AB - The aim of this study was to produce zirconia structures with a porous surface by the dip coating technique and assess the mechanical properties of the structures as well as the integrity of the porous layers. Surface porous layers with homogenous and graded porosity were produced over zirconia substrate discs using zirconia powders with different average sizes (d 50 = 40 μm; d 50 = 70 μm and d 50 = 100 μm) and without pore forming fugitive phases. Specimens were inspected using Scanning Electron Microscopy. Bending strength of specimens was obtained from biaxial flexural tests (B3B). Porous layers were successfully produced on zirconia discs substrates and the bending strength of these specimens were ~35% lower than uncoated specimens. Delamination occurred especially in layers with higher thickness and made of bigger particles. Practical application examples were provided in this paper showing the versatility of these porous surfaces in the production of multifunctional surfaces for stronger interfaces.

KW - Dip coating

KW - Mechanical properties

KW - Porous layers

KW - Porous surface

KW - Zirconia

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DO - 10.1016/j.msec.2019.03.087

M3 - Article

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AN - SCOPUS:85063751539

SN - 0928-4931

VL - 101

SP - 264

EP - 273

JO - Materials Science and Engineering C

JF - Materials Science and Engineering C

ER -

Production and characterization of zirconia structures with a porous surface

Abstract

Keywords

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