Molding Binder Influence on the Porosity and Gas Permeability of Ceramic Casting Molds

Paweł Wiśniewski , Ryszard Sitek , Aleksandra Towarek , Emilia Choińska , Dorota Moszczyńska , Jarosław Mizera

Abstract

The investment casting process is widely used in the aerospace industry to produce complex engine parts. The article determines the properties of quartz powders, nanosilica dioxide binders, and multilayer samples of ceramic casting molds. The properties of spherical molds obtained using an alcohol-water system derived from hydrolyzed ethyl silicate (ZKE) and LUDOX PX-30 (type Q1) were compared with those obtained in water systems derived from Remasol Plus and Remasol Premium binders (type Q2). The spherical samples are composed of seven layers made with the use of an immersion-sprinkling method. To assess the properties of the molds, X-ray microscopy (µCT), scanning electron microscopy (SEM), and gas permeability analysis over a temperature range of 20–950 °C were utilized. The binder type is proven to affect the properties of the casting mold samples. The material obtained in the water system, Q2, has advantageous properties such as a high porosity and gas permeability.
Author Paweł Wiśniewski (FMSE / DMD)
Paweł Wiśniewski,,
- Division of Materials Design
, Ryszard Sitek (FMSE / DMD)
Ryszard Sitek,,
- Division of Materials Design
, Aleksandra Towarek (FMSE / DMD)
Aleksandra Towarek,,
- Division of Materials Design
, Emilia Choińska (FMSE / DMD)
Emilia Choińska,,
- Division of Materials Design
, Dorota Moszczyńska (FMSE / DMD)
Dorota Moszczyńska,,
- Division of Materials Design
, Jarosław Mizera (FMSE / DMD)
Jarosław Mizera,,
- Division of Materials Design
Journal seriesMaterials, ISSN 1996-1944
Issue year2020
Vol13
No12
Pages1-13
Publication size in sheets136.75
Article number2735
Keywords in Englishcasting molds; precision casting; gas permeability; silica sand; μCT; binders;nanosilica dioxide
ASJC Classification2500 General Materials Science
DOIDOI:10.3390/ma13122735
Languageen angielski
LicenseJournal (articles only); author's original; Uznanie Autorstwa (CC-BY); after publication
File
WUTf220ff4ef41843819a7e2e82776719f1.pdf 4.69 MB
Score (nominal)140
Score sourcejournalList
ScoreMinisterial score = 140.0, 20-07-2020, ArticleFromJournal
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2017 = 1.285; WoS Impact Factor: 2018 = 2.972 (2) - 2018=3.532 (5)
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