Metallographic test sample preparation method of aluminum-based ceramic mould core and silicon-based ceramic mould core

Abstract

The invention provides a metallographic test sample preparation method of an aluminum-based ceramic mould core and a silicon-based ceramic mould core. An automatic sampling machine is used for manufacturing metallographic test samples of the aluminum-based ceramic mould core and the silicon-based ceramic mould core through grinding and polishing so as to avoid the defects that the stress on the section of the test samples cannot be controlled in manual operation. Different types of metallographic abrasive paper is selected in rough grinding and fine grinding processes during sample preparation, pressure on the surface of the test samples and test sample preparation time are reasonably controlled, liquid suspended silicon in a test sample preparation process is applied, and a rotary speed value of grinding and an abrasive disc are reasonable controlled to obtain ideal sections of the metallographic test samples of the aluminum-based ceramic mould core and the silicon-based ceramic mould core. The interfaces of the metallographic test samples of the aluminum-based and silicon-based ceramic mould cores are clean and outlines of all combination phases are clear; material base bodies have no obvious stripping phenomena and have no preparation scratches; the metallographic test sample preparation method has the characteristic of simple and feasible preparation method.

Description

technical field [0001] This technology is used for the preparation of ceramic metallographic samples, specifically the test parameters provided for the preparation of aluminum-based and silicon-based ceramic core metallographic samples. Background technique [0002] In today's era of rapid technological development, ceramic materials are not just a so-called folk craft, but a science. Due to its characteristics of being almost free from acid and alkali corrosion, non-conductive, high hardness, particularly high chemical stability, high temperature resistance, aging resistance, and radiation resistance, it has attracted more and more attention in the fields of electronics, aviation, aerospace, medicine, etc. is widely used. However, the general research on ceramic materials mainly focuses on their performance, composition, and preparation process, while the metallographic structure is rarely discussed. The fundamental reason is that ceramic materials are brittle and not as t...

AI Technical Summary

Problems solved by technology

However, the general research on ceramic materials mainly focuses on their performance, composition, and preparation process, while the metallographic structure is rarely discussed. The fundamental reason is that ceramic materials are brittle and not as tough as metal materials. Can easily prepare ideal metallographic samples

However, in the process of research and development of ceramic materials, if the analysis of metallographic microstructure can be combined, it will bring immeasurable prospects for the research and development of ceramic materials.

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