Use of electrophoretic impregnation and vacuum bagging to impregnate SiC powder into SiC fiber preforms

Research output: Contribution to journalArticlepeer-review

Standard

Use of electrophoretic impregnation and vacuum bagging to impregnate SiC powder into SiC fiber preforms. / Binner, Jonathan; Vaidhyanathan, Bala; Jaglin, David; Needham, Sarah.

In: International Journal of Applied Ceramic Technology, Vol. 12, No. 1, 19.07.2013, p. 212-222.

Research output: Contribution to journalArticlepeer-review

Harvard

APA

Vancouver

Author

Bibtex

@article{9e5a608810f7474da052d1832e25a846,
title = "Use of electrophoretic impregnation and vacuum bagging to impregnate SiC powder into SiC fiber preforms",
abstract = "Techniques based on vacuum bagging (VB) and electrophoretic impregnation (EPI) have been investigated for the impregnation of SiC powder into layered Nicalon SiC fabric preforms. The aim was to produce preimpregnated samples for subsequent chemical vapor infiltration (CVI) with reduced intertow porosity that arises from the construction of the fabric layers while leaving unblocked the intratow porosity that is so indispensable for a successful infiltration. Because the goal was simply to learn about the ability to impregnate the samples, no interphase coating was applied to the fibers as would normally be used when producing SiCf/SiC composites. While the VB process generally yielded much stronger preforms, depending on the pressure used and the powder particle size, it resulted in powder becoming located in the intratow rather than the intertow porosity. In contrast, provided an appropriate electrode arrangement was used, EPI offered the potential for a more controlled impregnation process with the powder primarily found in the intertow porosity; however, the preforms were very weak and delaminated easily. The combination of the two processes resulted in a very successful approach, with greater uniformity of particle infiltration and higher green strengths, while largely avoiding impregnating the intratow porosity.",
author = "Jonathan Binner and Bala Vaidhyanathan and David Jaglin and Sarah Needham",
year = "2013",
month = jul,
day = "19",
doi = "10.1111/ijac.12143",
language = "English",
volume = "12",
pages = "212--222",
journal = "International Journal of Applied Ceramic Technology",
issn = "1546-542X",
publisher = "Wiley",
number = "1",

}

RIS

TY - JOUR

T1 - Use of electrophoretic impregnation and vacuum bagging to impregnate SiC powder into SiC fiber preforms

AU - Binner, Jonathan

AU - Vaidhyanathan, Bala

AU - Jaglin, David

AU - Needham, Sarah

PY - 2013/7/19

Y1 - 2013/7/19

N2 - Techniques based on vacuum bagging (VB) and electrophoretic impregnation (EPI) have been investigated for the impregnation of SiC powder into layered Nicalon SiC fabric preforms. The aim was to produce preimpregnated samples for subsequent chemical vapor infiltration (CVI) with reduced intertow porosity that arises from the construction of the fabric layers while leaving unblocked the intratow porosity that is so indispensable for a successful infiltration. Because the goal was simply to learn about the ability to impregnate the samples, no interphase coating was applied to the fibers as would normally be used when producing SiCf/SiC composites. While the VB process generally yielded much stronger preforms, depending on the pressure used and the powder particle size, it resulted in powder becoming located in the intratow rather than the intertow porosity. In contrast, provided an appropriate electrode arrangement was used, EPI offered the potential for a more controlled impregnation process with the powder primarily found in the intertow porosity; however, the preforms were very weak and delaminated easily. The combination of the two processes resulted in a very successful approach, with greater uniformity of particle infiltration and higher green strengths, while largely avoiding impregnating the intratow porosity.

AB - Techniques based on vacuum bagging (VB) and electrophoretic impregnation (EPI) have been investigated for the impregnation of SiC powder into layered Nicalon SiC fabric preforms. The aim was to produce preimpregnated samples for subsequent chemical vapor infiltration (CVI) with reduced intertow porosity that arises from the construction of the fabric layers while leaving unblocked the intratow porosity that is so indispensable for a successful infiltration. Because the goal was simply to learn about the ability to impregnate the samples, no interphase coating was applied to the fibers as would normally be used when producing SiCf/SiC composites. While the VB process generally yielded much stronger preforms, depending on the pressure used and the powder particle size, it resulted in powder becoming located in the intratow rather than the intertow porosity. In contrast, provided an appropriate electrode arrangement was used, EPI offered the potential for a more controlled impregnation process with the powder primarily found in the intertow porosity; however, the preforms were very weak and delaminated easily. The combination of the two processes resulted in a very successful approach, with greater uniformity of particle infiltration and higher green strengths, while largely avoiding impregnating the intratow porosity.

UR - http://www.scopus.com/inward/record.url?scp=84920651221&partnerID=8YFLogxK

U2 - 10.1111/ijac.12143

DO - 10.1111/ijac.12143

M3 - Article

AN - SCOPUS:84920651221

VL - 12

SP - 212

EP - 222

JO - International Journal of Applied Ceramic Technology

JF - International Journal of Applied Ceramic Technology

SN - 1546-542X

IS - 1

ER -