Standards Development

Scope

This document specifies test methods for determination of trace elements in silicon carbide fibres samples used as the raw material for fine ceramics.

This document stipulates the determination methods of the calcium, magnesium, titanium, zirconium, zinc, copper, chromium, tungsten, nickel, aluminium and iron contents in silicon carbide fibres for fine ceramics. Trace element contents such as calcium, magnesium, titanium, zirconium, zinc, copper, chromium, tungsten, nickel, aluminium, and iron are determined by using laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) method.

Purpose

Ceramic fibres, such as silicon carbide (SiC), glass, basalt and so on, are one of the core materials in the 4th industrial revolution application field, as aerospace, defence, mechanic and others industry. Because of its mechanical property, high thermal resistance and chemical resistance. In specially, silicon carbide fibres are employed for high thermal resistance parts such as engines for unmanned reconnaissance plane and high temperature gas turbine and nozzle. For better applications of silicon carbide fibres, it is very required to analyse and evaluation their chemical compositions, quickly and exactly because their chemical performance can be effect to the thermos-physical properties. Conventional ceramic materials can be analysed precisely by wet (ICP-OES/-MS) trace element methods, but the method of solid-state direct analysis is essential because ceramic fibres, silicon carbide, are poorly soluble. In addition, there is no international standard for the chemical analysis of silicon carbide fibres. For these reason, we suggest the test methods for determination of trace elements for silicon carbide fibres using laser ablation ICP-MS.