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Inductively Coupled Plasma Atomic Emission Spectroscopy: Principle

Inductively Coupled Plasma Atomic Emission Spectroscopy: Principle

Inductively coupled plasma (ICP) is the most widely used plasma source in atomic emission spectroscopy (AES), also known as Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES). The ICP source, or torch, consists of three concentric quartz tubes with argon gas flowing through them. A spark from a Tesla coil initiates the ionization of argon, generating a high-temperature plasma.
The ions and electrons produced interact with the fluctuating magnetic field created by a water-cooled...

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Updated: Jul 5, 2025

Spark Plasma Sintering Apparatus Used for the Formation of Strontium Titanate Bicrystals

Spark Plasma Sintering Apparatus Used for the Formation of Strontium Titanate Bicrystals

Published on: February 9, 2017

在Al-Ti-Cu-Co合金中通过火花等离子体烧结工艺进行受管制的相位分离.

Seulgee Lee¹, Chayanaphat Chokradjaroen², Yasuyuki Sawada³

¹Department of Chemical Systems Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan.

Materials (Basel, Switzerland)

|January 23, 2024

概括

这项研究开发了具有增强机械强度的轻质Al-Ti-Cu-Co合金. 增加球磨时间减少了颗粒大小,提高了硬度,并抑制了新型合金中的脆性断裂.

关键词:

含有Al-Ti的多元件合金.硬度硬度硬度硬度阶段分离的分离阶段分离.粉末金工业的粉末金学在火花等离子烧结过程中,火花等离子烧结.

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Synthesis of Non-uniformly Pr-doped SrTiO3 Ceramics and Their Thermoelectric Properties

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科学领域:

材料科学材料科学材料科学
金工业是金工业的一个方面.
合金开发合金开发

背景情况:

开发具有高机械强度的轻质合金对于先进的应用至关重要.
基于- (Al-Ti) 的合金由于其低密度和高点而具有潜力.
控制微观结构是优化多元合金机械性能的关键.

研究的目的:

为了创建具有优越机械强度的轻量级Al-Ti-Cu-Co多元件合金.
通过行星球磨削来研究颗粒大小减小对合金性能的影响.
了解相位分离及其对硬度和断裂行为的影响.

主要方法:

星球球磨法用于减少Al-Ti-Cu-Co金属粉末的颗粒度.
用火花等离子烧结 (SPS) 来巩固磨粉的粉末.
对烧结合金进行了微结构分析和硬度测试 (HV).

主要成果:

颗粒大小随着球磨时间的增加而减少 (从6.6μm降至3.2μm).
火花等离子烧结诱导了微相分离,形成一个富含Cu的相与纳米级富含Ti的沉物.
硬度随着细颗粒大小显著增加 (到791 HV),同时保持低密度 (5.8-5.9 g/cm3).

结论:

通过延长球磨削来减少颗粒大小可以增强扩散并改善机械性能.
阶段分离的微结构,包括 (Cu,Co) ₂AlTi (L2₁) 和一个富含Cu的阶段与富含Ti (B2) 的沉物,有助于高硬度和性.
富含相的精细网络起到缓冲作用,防止脆碎的断裂并提高合金的整体性能.