Manufacture of Porous Frit Vents Using Space Holder Methodology for Radioisotopic Space Power Systems

Gareth Sheppard; Karl Tassenberg; Ramy Mesalam; Bogdan Nenchev; Joel Strickland; Hugo Williams

doi:10.1007/978-3-030-65493-1_19

Manufacture of Porous Frit Vents Using Space Holder Methodology for Radioisotopic Space Power Systems

Gareth Sheppard^*
, Karl Tassenberg
, Ramy Mesalam
, Bogdan Nenchev
, Joel Strickland
, Hugo Williams

^*Corresponding author for this work

Metallurgy and Materials

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Porous pure copper frits were produced by sintering via both pressure-less and space holder methods. Frits function both as a gas pressure release path and radioisotopic fine filter for radioisotopic thermoelectric generators (RTG’s) and radioisotopic heater units (RHU’s). Highly precise and reproducible flow rates are a fundamental requirement in frit vent design, hence accurate characterisation of their morphological structure is crucial. A novel bulk sample characterisation algorithm “GAKTpore” is applied to scanning electron microscope (SEM) maps to study and quantify the effects of processing parameters on sample heterogeneity, pore dispersion, and pore morphology. The purpose of the investigation is to refine the process–property relationships and achieve manufacturable repeatable homogeneous morphological structures. In this study, copper was used as a surrogate for platinum alloys. All frits were tested via a purpose-built/in-house helium precision-flow rig in order to establish a link between permeability and surface morphology. Frits manufactured via the space holder route displayed great potential for the future development of the manufacture of frit vents for European RTG and RHU development programs.

Original language	English
Title of host publication	Characterization of Minerals, Metals, and Materials 2021
Editors	Jian Li, Mingming Zhang, Bowen Li, Sergio Neves Monteiro, Shadia Ikhmayies, Yunus Eren Kalay, Jiann-Yang Hwang, Juan P. Escobedo-Diaz, John S. Carpenter, Andrew D. Brown, Rajiv Soman, Alex Moser
Publisher	Springer
Pages	201-210
Number of pages	10
Edition	1
ISBN (Electronic)	9783030654931
ISBN (Print)	9783030654924, 9783030654955
DOIs	https://doi.org/10.1007/978-3-030-65493-1_19
Publication status	Published - 17 Feb 2021
Event	TMS 2021 150th Annual Meeting & Exhibition - Virtual Duration: 15 Mar 2021 → 18 Mar 2021

Publication series

Name	Minerals, Metals and Materials Series
ISSN (Print)	2367-1181
ISSN (Electronic)	2367-1696

Conference

Conference	TMS 2021 150th Annual Meeting & Exhibition
Period	15/03/21 → 18/03/21

Bibliographical note

Funding Information:
Acknowledgements G.S, K.T., B.N., and J.S. gratefully acknowledge the financial support from the Centre for Doctoral Training in Innovative Metal Processing (IMPaCT) funded by the UK Engineering and Physical Sciences Research Council (EPRSC) (Grant No: EP/L016206/1) and the Mechanics of Material Advanced Microscopy Centre at the University of Leicester.

Publisher Copyright:
© The Minerals, Metals & Materials Society 2021.

Keywords

Homogeneity
Metal foams
Permeability
Pore analysis
Sintering
Space holders

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Energy Engineering and Power Technology
Mechanics of Materials
Metals and Alloys
Materials Chemistry

Access to Document

10.1007/978-3-030-65493-1_19

Cite this

Sheppard, G., Tassenberg, K., Mesalam, R., Nenchev, B., Strickland, J., & Williams, H. (2021). Manufacture of Porous Frit Vents Using Space Holder Methodology for Radioisotopic Space Power Systems. In J. Li, M. Zhang, B. Li, S. N. Monteiro, S. Ikhmayies, Y. E. Kalay, J.-Y. Hwang, J. P. Escobedo-Diaz, J. S. Carpenter, A. D. Brown, R. Soman, & A. Moser (Eds.), Characterization of Minerals, Metals, and Materials 2021 (1 ed., pp. 201-210). (Minerals, Metals and Materials Series). Springer. https://doi.org/10.1007/978-3-030-65493-1_19

Sheppard, Gareth ; Tassenberg, Karl ; Mesalam, Ramy et al. / Manufacture of Porous Frit Vents Using Space Holder Methodology for Radioisotopic Space Power Systems. Characterization of Minerals, Metals, and Materials 2021. editor / Jian Li ; Mingming Zhang ; Bowen Li ; Sergio Neves Monteiro ; Shadia Ikhmayies ; Yunus Eren Kalay ; Jiann-Yang Hwang ; Juan P. Escobedo-Diaz ; John S. Carpenter ; Andrew D. Brown ; Rajiv Soman ; Alex Moser. 1. ed. Springer, 2021. pp. 201-210 (Minerals, Metals and Materials Series).

@inproceedings{51f3005a683d4ebea2c4da646c7ca29e,

title = "Manufacture of Porous Frit Vents Using Space Holder Methodology for Radioisotopic Space Power Systems",

abstract = "Porous pure copper frits were produced by sintering via both pressure-less and space holder methods. Frits function both as a gas pressure release path and radioisotopic fine filter for radioisotopic thermoelectric generators (RTG{\textquoteright}s) and radioisotopic heater units (RHU{\textquoteright}s). Highly precise and reproducible flow rates are a fundamental requirement in frit vent design, hence accurate characterisation of their morphological structure is crucial. A novel bulk sample characterisation algorithm “GAKTpore” is applied to scanning electron microscope (SEM) maps to study and quantify the effects of processing parameters on sample heterogeneity, pore dispersion, and pore morphology. The purpose of the investigation is to refine the process–property relationships and achieve manufacturable repeatable homogeneous morphological structures. In this study, copper was used as a surrogate for platinum alloys. All frits were tested via a purpose-built/in-house helium precision-flow rig in order to establish a link between permeability and surface morphology. Frits manufactured via the space holder route displayed great potential for the future development of the manufacture of frit vents for European RTG and RHU development programs.",

keywords = "Homogeneity, Metal foams, Permeability, Pore analysis, Sintering, Space holders",

author = "Gareth Sheppard and Karl Tassenberg and Ramy Mesalam and Bogdan Nenchev and Joel Strickland and Hugo Williams",

note = "Funding Information: Acknowledgements G.S, K.T., B.N., and J.S. gratefully acknowledge the financial support from the Centre for Doctoral Training in Innovative Metal Processing (IMPaCT) funded by the UK Engineering and Physical Sciences Research Council (EPRSC) (Grant No: EP/L016206/1) and the Mechanics of Material Advanced Microscopy Centre at the University of Leicester. Publisher Copyright: {\textcopyright} The Minerals, Metals \& Materials Society 2021.; TMS 2021 150th Annual Meeting \& Exhibition ; Conference date: 15-03-2021 Through 18-03-2021",

year = "2021",

month = feb,

day = "17",

doi = "10.1007/978-3-030-65493-1\_19",

language = "English",

isbn = "9783030654924",

series = "Minerals, Metals and Materials Series",

publisher = "Springer",

pages = "201--210",

editor = "Jian Li and Mingming Zhang and Bowen Li and Monteiro, \{Sergio Neves\} and Shadia Ikhmayies and Kalay, \{Yunus Eren\} and Jiann-Yang Hwang and Escobedo-Diaz, \{Juan P.\} and Carpenter, \{John S.\} and Brown, \{Andrew D.\} and Rajiv Soman and Alex Moser",

booktitle = "Characterization of Minerals, Metals, and Materials 2021",

edition = "1",

}

Sheppard, G, Tassenberg, K, Mesalam, R, Nenchev, B, Strickland, J & Williams, H 2021, Manufacture of Porous Frit Vents Using Space Holder Methodology for Radioisotopic Space Power Systems. in J Li, M Zhang, B Li, SN Monteiro, S Ikhmayies, YE Kalay, J-Y Hwang, JP Escobedo-Diaz, JS Carpenter, AD Brown, R Soman & A Moser (eds), Characterization of Minerals, Metals, and Materials 2021. 1 edn, Minerals, Metals and Materials Series, Springer, pp. 201-210, TMS 2021 150th Annual Meeting & Exhibition, 15/03/21. https://doi.org/10.1007/978-3-030-65493-1_19

Manufacture of Porous Frit Vents Using Space Holder Methodology for Radioisotopic Space Power Systems. / Sheppard, Gareth; Tassenberg, Karl; Mesalam, Ramy et al.
Characterization of Minerals, Metals, and Materials 2021. ed. / Jian Li; Mingming Zhang; Bowen Li; Sergio Neves Monteiro; Shadia Ikhmayies; Yunus Eren Kalay; Jiann-Yang Hwang; Juan P. Escobedo-Diaz; John S. Carpenter; Andrew D. Brown; Rajiv Soman; Alex Moser. 1. ed. Springer, 2021. p. 201-210 (Minerals, Metals and Materials Series).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Manufacture of Porous Frit Vents Using Space Holder Methodology for Radioisotopic Space Power Systems

AU - Sheppard, Gareth

AU - Tassenberg, Karl

AU - Mesalam, Ramy

AU - Nenchev, Bogdan

AU - Strickland, Joel

AU - Williams, Hugo

N1 - Funding Information: Acknowledgements G.S, K.T., B.N., and J.S. gratefully acknowledge the financial support from the Centre for Doctoral Training in Innovative Metal Processing (IMPaCT) funded by the UK Engineering and Physical Sciences Research Council (EPRSC) (Grant No: EP/L016206/1) and the Mechanics of Material Advanced Microscopy Centre at the University of Leicester. Publisher Copyright: © The Minerals, Metals & Materials Society 2021.

PY - 2021/2/17

Y1 - 2021/2/17

N2 - Porous pure copper frits were produced by sintering via both pressure-less and space holder methods. Frits function both as a gas pressure release path and radioisotopic fine filter for radioisotopic thermoelectric generators (RTG’s) and radioisotopic heater units (RHU’s). Highly precise and reproducible flow rates are a fundamental requirement in frit vent design, hence accurate characterisation of their morphological structure is crucial. A novel bulk sample characterisation algorithm “GAKTpore” is applied to scanning electron microscope (SEM) maps to study and quantify the effects of processing parameters on sample heterogeneity, pore dispersion, and pore morphology. The purpose of the investigation is to refine the process–property relationships and achieve manufacturable repeatable homogeneous morphological structures. In this study, copper was used as a surrogate for platinum alloys. All frits were tested via a purpose-built/in-house helium precision-flow rig in order to establish a link between permeability and surface morphology. Frits manufactured via the space holder route displayed great potential for the future development of the manufacture of frit vents for European RTG and RHU development programs.

AB - Porous pure copper frits were produced by sintering via both pressure-less and space holder methods. Frits function both as a gas pressure release path and radioisotopic fine filter for radioisotopic thermoelectric generators (RTG’s) and radioisotopic heater units (RHU’s). Highly precise and reproducible flow rates are a fundamental requirement in frit vent design, hence accurate characterisation of their morphological structure is crucial. A novel bulk sample characterisation algorithm “GAKTpore” is applied to scanning electron microscope (SEM) maps to study and quantify the effects of processing parameters on sample heterogeneity, pore dispersion, and pore morphology. The purpose of the investigation is to refine the process–property relationships and achieve manufacturable repeatable homogeneous morphological structures. In this study, copper was used as a surrogate for platinum alloys. All frits were tested via a purpose-built/in-house helium precision-flow rig in order to establish a link between permeability and surface morphology. Frits manufactured via the space holder route displayed great potential for the future development of the manufacture of frit vents for European RTG and RHU development programs.

KW - Homogeneity

KW - Metal foams

KW - Permeability

KW - Pore analysis

KW - Sintering

KW - Space holders

UR - https://www.scopus.com/pages/publications/85102040542

U2 - 10.1007/978-3-030-65493-1_19

DO - 10.1007/978-3-030-65493-1_19

M3 - Conference contribution

AN - SCOPUS:85102040542

SN - 9783030654924

SN - 9783030654955

T3 - Minerals, Metals and Materials Series

SP - 201

EP - 210

BT - Characterization of Minerals, Metals, and Materials 2021

A2 - Li, Jian

A2 - Zhang, Mingming

A2 - Li, Bowen

A2 - Monteiro, Sergio Neves

A2 - Ikhmayies, Shadia

A2 - Kalay, Yunus Eren

A2 - Hwang, Jiann-Yang

A2 - Escobedo-Diaz, Juan P.

A2 - Carpenter, John S.

A2 - Brown, Andrew D.

A2 - Soman, Rajiv

A2 - Moser, Alex

PB - Springer

T2 - TMS 2021 150th Annual Meeting & Exhibition

Y2 - 15 March 2021 through 18 March 2021

ER -

Sheppard G, Tassenberg K, Mesalam R, Nenchev B, Strickland J, Williams H. Manufacture of Porous Frit Vents Using Space Holder Methodology for Radioisotopic Space Power Systems. In Li J, Zhang M, Li B, Monteiro SN, Ikhmayies S, Kalay YE, Hwang JY, Escobedo-Diaz JP, Carpenter JS, Brown AD, Soman R, Moser A, editors, Characterization of Minerals, Metals, and Materials 2021. 1 ed. Springer. 2021. p. 201-210. (Minerals, Metals and Materials Series). Epub 2021 Feb 16. doi: 10.1007/978-3-030-65493-1_19

Manufacture of Porous Frit Vents Using Space Holder Methodology for Radioisotopic Space Power Systems

Abstract

Publication series

Conference

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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Cite this