等离子活化烧结过程的温度分布研究

郭亚杰 1; 简文政 1; 金海云 2; 乔冠军 1

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等离子活化烧结过程的温度分布研究

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- 等离子活化烧结过程的温度分布研究
- Temperature Distribution During Plasma Activated Sintering
- 西安交通大学学报 2011年45卷第1期页码：122-126
- 作者机构：
  
  西安交通大学金属材料强度国家重点实验室,西安,710049
- 作者简介：
- 基金信息：
  
  : 2010-04-21. 作者简介: 郭亚杰(1980-),男,博士生;乔冠军(联系人),男,教授,博士生导师. 基金项目: 国家自然科学基金资助项目(50972117)
- DOI：
  中图分类号： TB30
- 网络首发：2011-01-10，
  
  纸质出版：2011
- 稿件说明：
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郭亚杰 1, 简文政 1, 金海云 2, 等. 等离子活化烧结过程的温度分布研究[J]. 西安交通大学学报, 2011,45(1):122-126.

Temperature Distribution During Plasma Activated Sintering[J]. 2011, 45(1): 122-126.
郭亚杰 1, 简文政 1, 金海云 2, 等. 等离子活化烧结过程的温度分布研究[J]. 西安交通大学学报, 2011,45(1):122-126. DOI：

Temperature Distribution During Plasma Activated Sintering[J]. 2011, 45(1): 122-126. DOI：

摘要

以导电性的石墨和绝缘性的氧化铝为测试对象

对等离子活化烧结过程中试样和模具所组成体系的温度分布进行了理论分析和实验研究.结果表明

在200～800 ℃的测量范围内

石墨-模具体系和氧化铝-模具体系内均存在径向温度梯度

试样的温度均高于模具外壁的温度

2种体系的径向温差随温度的升高成抛物线趋势增大.在同一温度下

石墨-模具体系的径向温度梯度大于氧化铝-模具体系的径向温度梯度

2种体系内测温点与试样中心点之间的温差均随两点之间距离的增大而成抛物线趋势增大

这与理论分析结果是相一致的.

Abstract

The temperature distribution of the sample-die system during plasma activated sintering(PAS)process was investigated theoretically and experimentally. For the experimental measurements

the electrical conductive graphite and non-conductive alumina samples were used. The results show that a radial temperature gradient exists in both the graphite-die and alumina-die systems

and that the temperature in the sample gets higher than that in the die in the temperature range of 200-800 ℃. Moreover

at the same temperature

the temperature gradient in the graphite-die system is larger than that in the alumina-die system. With increasing distance between measuring point and sample center

the radial temperature differences in both the systems increase following a parabolic trend

which agrees with the theoretical analysis. And the radial temperature difference exhibits a parabolic increase tendency with increasing temperature.

关键词

Keywords

references

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