Draft International Standard
ISO/DIS 22765
Nuclear fuel technology — Sintered (U,Pu)O2 pellets — Guidance for ceramographic preparation for microstructure examination
Reference number
ISO/DIS 22765
Версия 2
Draft
International Standard
Предпросмотр
ISO/DIS 22765
86041
недоступно на русском языке
Проект данного международного стандарта находится на этапе рассмотрения членами ИСО.
Текущее издание: ISO 22765:2016

ISO/DIS 22765

ISO/DIS 22765
86041
Язык
Формат
CHF 63
Пересчитать швейцарские франки (CHF) в ваша валюта

Тезис

ISO 22765:2016 describes the ceramographic procedure used to prepare sintered (U,Pu)O2 pellets for qualitative and quantitative examination of the pellet microstructure.

The examinations are performed before and after thermal treatment or chemical etching.

They allow

- observation of any cracks, intra- and intergranular pores or inclusions, and

- measurement of the grain size, porosity and plutonium homogeneity distribution.

The mean grain diameter is measured by one of the classic methods: counting (intercept method), comparison with standard grids or typical images, etc.[2] The measurement of individual grain sizes requires uniform development of the microstructure over the entire specimen.

The plutonium cluster and pore distribution and localization are generally analysed by automatic image analysis systems. The plutonium distribution is usually revealed by chemical etching but alpha-autoradiography can also be used. The first technique avoids the tendency for autoradiography to exaggerate the size of plutonium-rich clusters due to the distance the alpha particles travel away from the source.

Общая информация

  •  : В стадии разработки
    : Рассылка краткого отчета по итогам голосования [40.60]
  •  : 2
  • ISO/TC 85/SC 5
    27.120.30 
  • RSS обновления

Жизненный цикл

Появились вопросы?

Ознакомьтесь с FAQ