On Joule heating during spark plasma sintering of metal powders

被引：64

作者：

Chawake, Niraj ^{[1
]}

Pinto, Linford D. ^{[2
]}

Srivastav, Ajeet K. ^{[1
]}

Akkiraju, Karthik ^{[1
]}

Murty, B. S. ^{[1
]}

Kottada, Ravi Sankar ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Met & Mat Engn, Madras 600036, Tamil Nadu, India

[2] BMS Coll Engn, Dept Mech Engn, Bangalore 560019, Karnataka, India

来源：

SCRIPTA MATERIALIA | 2014年 / 93卷

关键词：

Spark plasma sintering; Joule heating; Electrical resistivity; Densification; ELECTRIC-FIELD; TEMPERATURE DISTRIBUTION; GROWTH; CERAMICS; PRESSURE; COMPACTS; SPS; CONSOLIDATION; CONDUCTIVITY; RESISTIVITY;

D O I：

10.1016/j.scriptamat.2014.09.003

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Joule heating as a primary heating source mechanism was probed during spark plasma sintering (SPS) of pure metal powders (Fe, Ni and Cu). Resistance to electric path was estimated from voltage-current measurements obtained online during these experiments. Resistance was observed to saturate at the same value irrespective of the type of metal powder, after attaining a sintering temperature of similar to 0.3T(m). This saturation in resistance is attributed primarily to the Joule heating that occurs at the graphite-foil and punch in an SPS system. (C) 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：52 / 55

页数：4

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