成型粘结剂对陶瓷铸型孔隙率和透气性的影响

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

作者信息

Wisniewski Pawel, Sitek Ryszard, Towarek Aleksandra, Choinska Emilia, Moszczynska Dorota, Mizera Jaroslaw

机构信息

Faculty of Materials Science and Engineering, Warsaw University of Technology, Wołoska 141, 02-507 Warsaw, Poland.

出版信息

Materials (Basel). 2020 Jun 16;13(12):2735. doi: 10.3390/ma13122735.

DOI:10.3390/ma13122735

PMID:32560239

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7345566/

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.

摘要

熔模铸造工艺在航空航天工业中广泛用于生产复杂的发动机部件。本文确定了石英粉、纳米二氧化硅粘结剂以及陶瓷铸模多层样品的性能。将使用由水解硅酸乙酯（ZKE）和LUDOX PX - 30（Q1型）衍生的醇 - 水体系获得的球形铸模的性能与使用Remasol Plus和Remasol Premium粘结剂（Q2型）在水体系中获得的铸模性能进行了比较。球形样品由采用浸涂 - 喷淋法制成的七层组成。为了评估铸模的性能，使用了X射线显微镜（µCT）、扫描电子显微镜（SEM）以及在20 - 950°C温度范围内的透气性分析。结果证明粘结剂类型会影响铸模样品的性能。在水体系中获得的材料Q2具有诸如高孔隙率和透气性等有利性能。