纤维素衍生粘合剂对 PM 钢特性和性能的影响

IF 1.9 4区材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING

Powder Metallurgy Pub Date : 2024-01-11 DOI:10.1177/00325899231221984

Christian Lyck, Peter Valler, P. Kjeldsteen, N. Tiedje

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引用次数: 0

摘要

一种室温挤压技术最初是为挤压陶瓷粉末而开发的，现已被改用于挤压金属粉末。这种挤压技术依赖于纤维素衍生的粘合剂，而在传统的陶瓷工艺中，这种粘合剂在空气中烧结时会被烧掉。在这项工作中，通过比较氢气脱粘与空气脱粘对脱粘和烧结样品的密度、碳和氧含量的影响，研究了氢气脱粘对密度、碳和氧含量的影响。研究发现，氢气脱碳会产生大量残碳，在烧结温度下会促进奥氏体的形成，并降低致密性。在空气中脱碳很有效，碳浓度很低，致密性高达 97 vol.-%，但也产生了大量氧化物，这些氧化物在氢烧结过程中没有完全还原。

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The effect of cellulose-derived binder on properties and performance of PM steels

A room-temperature extrusion technique, originally developed for the extrusion of ceramic powders, has been adapted to the extrusion of metal powders. The extrusion technology relies on cellulose-derived binders, which in traditional ceramic practices are burned off during sintering in air. In this work, the influence of hydrogen-debinding on density, carbon and oxygen levels is studied by comparing the effects of hydrogen debinding with the effects of air-debinding in as-debound and as-sintered samples. The study found debinding in hydrogen to result in significant levels of residual carbon, which promote austenite at the sintering temperature, and reduce densification. Debinding in air was effective, resulting in very low carbon concentrations and densification of up to 97 vol.-%, but also a considerable amount of oxides, which were not completely reduced during hydrogen sintering.

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来源期刊

Powder Metallurgy 工程技术-冶金工程

CiteScore

2.90

自引率

7.10%

发文量

审稿时长

3 months

期刊介绍： Powder Metallurgy is an international journal publishing peer-reviewed original research on the science and practice of powder metallurgy and particulate technology. Coverage includes metallic particulate materials, PM tool materials, hard materials, composites, and novel powder based materials.