The Effects of Sintering Temperature and Addition of TiH2 on the Sintering Process of Cu

Huali Hao; Yanjing Wang; Hamid Reza Jafari Nodooshan; Yongyun Zhang; Shulong Ye; Yonghu Lv; Peng Yu

doi:10.3390/ma12162594

The Effects of Sintering Temperature and Addition of TiH₂ on the Sintering Process of Cu

Huali Hao, Yanjing Wang, Hamid Reza Jafari Nodooshan, Yongyun Zhang, Shulong Ye, Yonghu Lv, Peng Yu^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

12 Citations (Scopus)

29 Downloads (CityUHK Scholars)

Abstract

In this study, effects of sintering temperature and TiH₂ on the sintering process of Cu are investigated. During sintering, the oxide in Cu decomposes and generates oxygen, which can become trapped in the material forming closed pores. Therefore, this results in low sintered density. Sintering behavior of Cu can be significantly improved by adding 0.5 wt.% TiH₂ which decomposes during sintering, producing hydrogen and effectively reducing the oxide in Cu. Although gas products of the reduction reaction may still be trapped inside the close pores formed near the TiH₂ particles and handicap the sintering of Cu, an isothermal treatment at 650 °C can avoid forming close pores. This allows reaction products to dissipate freely from the sample, subsequently increasing its sintered density.

Original language	English
Article number	2594
Journal	Materials
Volume	12
Issue number	16
Online published	15 Aug 2019
DOIs	https://doi.org/10.3390/ma12162594
Publication status	Published - Aug 2019
Externally published	Yes

Funding

Funding: This work was supported by the Shenzhen Science and Technology Innovation Committee (grant numbers SGLH20161212155758670 and KQJSCX20180322152424539), and “Climbing Program” Special Funds (grant number pdjh2017c0007). Acknowledgments: The authors thank the support from the Shenzhen Science and Technology Innovation Committee (grant number SGLH20161212155758670 and KQJSCX20180322152424539), and “Climbing Program” Special Funds (grant number pdjh2017c0007).

Research Keywords

Copper
Oxygen content
Powder metallurgy
Sintering behavior
TiH

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Cite this

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title = "The Effects of Sintering Temperature and Addition of TiH2 on the Sintering Process of Cu",

abstract = "In this study, effects of sintering temperature and TiH2 on the sintering process of Cu are investigated. During sintering, the oxide in Cu decomposes and generates oxygen, which can become trapped in the material forming closed pores. Therefore, this results in low sintered density. Sintering behavior of Cu can be significantly improved by adding 0.5 wt.% TiH2 which decomposes during sintering, producing hydrogen and effectively reducing the oxide in Cu. Although gas products of the reduction reaction may still be trapped inside the close pores formed near the TiH2 particles and handicap the sintering of Cu, an isothermal treatment at 650 °C can avoid forming close pores. This allows reaction products to dissipate freely from the sample, subsequently increasing its sintered density.",

keywords = "Copper, Oxygen content, Powder metallurgy, Sintering behavior, TiH",

author = "Huali Hao and Yanjing Wang and Nodooshan, {Hamid Reza Jafari} and Yongyun Zhang and Shulong Ye and Yonghu Lv and Peng Yu",

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T1 - The Effects of Sintering Temperature and Addition of TiH2 on the Sintering Process of Cu

AU - Hao, Huali

AU - Wang, Yanjing

AU - Nodooshan, Hamid Reza Jafari

AU - Zhang, Yongyun

AU - Ye, Shulong

AU - Lv, Yonghu

AU - Yu, Peng

PY - 2019/8

Y1 - 2019/8

N2 - In this study, effects of sintering temperature and TiH2 on the sintering process of Cu are investigated. During sintering, the oxide in Cu decomposes and generates oxygen, which can become trapped in the material forming closed pores. Therefore, this results in low sintered density. Sintering behavior of Cu can be significantly improved by adding 0.5 wt.% TiH2 which decomposes during sintering, producing hydrogen and effectively reducing the oxide in Cu. Although gas products of the reduction reaction may still be trapped inside the close pores formed near the TiH2 particles and handicap the sintering of Cu, an isothermal treatment at 650 °C can avoid forming close pores. This allows reaction products to dissipate freely from the sample, subsequently increasing its sintered density.

AB - In this study, effects of sintering temperature and TiH2 on the sintering process of Cu are investigated. During sintering, the oxide in Cu decomposes and generates oxygen, which can become trapped in the material forming closed pores. Therefore, this results in low sintered density. Sintering behavior of Cu can be significantly improved by adding 0.5 wt.% TiH2 which decomposes during sintering, producing hydrogen and effectively reducing the oxide in Cu. Although gas products of the reduction reaction may still be trapped inside the close pores formed near the TiH2 particles and handicap the sintering of Cu, an isothermal treatment at 650 °C can avoid forming close pores. This allows reaction products to dissipate freely from the sample, subsequently increasing its sintered density.

KW - Copper

KW - Oxygen content

KW - Powder metallurgy

KW - Sintering behavior

KW - TiH

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DO - 10.3390/ma12162594

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