Thermal analysis and morphology of the ball-milled Ti-Ni powder

A. S. Bolokang; M. N. Mathabathe; C. Mathebula; C. N. Machio

doi:10.1016/j.matpr.2020.02.351

Thermal analysis and morphology of the ball-milled Ti-Ni powder

A. S. Bolokang, M. N. Mathabathe, C. Mathebula, C. N. Machio

Research output: Contribution to journal › Conference article › peer-review

5 Citations (Scopus)

Abstract

The initially spherical titanium (Ti) powder particles were flattened to 'pan-cake” shape during Ball milling (BM) of the Ti-Ni powder mixture. Ultrafine Ni particles coated the pancakes of Ti particles after the final milling process of 8 h (h). The XRD patterns of the milled TiNi powders did not show obvious alloying. However, analysis of the (1 1 1) planes revealed a slight shifting on peak positioning which is attributable to powder deformation. Thermal analysis of unmilled Ti50Ni powder exposed the Ni Curie point at ~353 °C. The normal α → β phase transformation in CP Ti was suppressed due to the presence of Ni powder. Differential scanning calorimetry (DSC), scanning electron microscopy (SEM) and X-ray diffraction (XRD) were used to characterize the milled and annealed powders.

Original language	English
Pages (from-to)	503-507
Number of pages	5
Journal	Materials Today: Proceedings
Volume	38
DOIs	https://doi.org/10.1016/j.matpr.2020.02.351
Publication status	Published - 1 Jan 2021
Externally published	Yes
Event	2020 International Symposium on Nanostructured, Nanoengineered and Advanced Materials, ISNNAM 2020 - Gold Reef City, South Africa Duration: 30 Apr 2020 → 3 May 2020

Keywords

Thermal analysis TiNi Phase transformation Ball milling

ASJC Scopus subject areas

General Materials Science

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10.1016/j.matpr.2020.02.351

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title = "Thermal analysis and morphology of the ball-milled Ti-Ni powder",

abstract = "The initially spherical titanium (Ti) powder particles were flattened to 'pan-cake” shape during Ball milling (BM) of the Ti-Ni powder mixture. Ultrafine Ni particles coated the pancakes of Ti particles after the final milling process of 8 h (h). The XRD patterns of the milled TiNi powders did not show obvious alloying. However, analysis of the (1 1 1) planes revealed a slight shifting on peak positioning which is attributable to powder deformation. Thermal analysis of unmilled Ti50Ni powder exposed the Ni Curie point at ~353 °C. The normal α → β phase transformation in CP Ti was suppressed due to the presence of Ni powder. Differential scanning calorimetry (DSC), scanning electron microscopy (SEM) and X-ray diffraction (XRD) were used to characterize the milled and annealed powders.",

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AU - Bolokang, A. S.

AU - Mathabathe, M. N.

AU - Mathebula, C.

AU - Machio, C. N.

N1 - Publisher Copyright: © 2019 Elsevier Ltd. All rights reserved. Selection and peer-review under responsibility of the scientific committee of the International Symposium on Nanostructured, Nanoengineered and Advanced Materials.

PY - 2021/1/1

Y1 - 2021/1/1

N2 - The initially spherical titanium (Ti) powder particles were flattened to 'pan-cake” shape during Ball milling (BM) of the Ti-Ni powder mixture. Ultrafine Ni particles coated the pancakes of Ti particles after the final milling process of 8 h (h). The XRD patterns of the milled TiNi powders did not show obvious alloying. However, analysis of the (1 1 1) planes revealed a slight shifting on peak positioning which is attributable to powder deformation. Thermal analysis of unmilled Ti50Ni powder exposed the Ni Curie point at ~353 °C. The normal α → β phase transformation in CP Ti was suppressed due to the presence of Ni powder. Differential scanning calorimetry (DSC), scanning electron microscopy (SEM) and X-ray diffraction (XRD) were used to characterize the milled and annealed powders.

AB - The initially spherical titanium (Ti) powder particles were flattened to 'pan-cake” shape during Ball milling (BM) of the Ti-Ni powder mixture. Ultrafine Ni particles coated the pancakes of Ti particles after the final milling process of 8 h (h). The XRD patterns of the milled TiNi powders did not show obvious alloying. However, analysis of the (1 1 1) planes revealed a slight shifting on peak positioning which is attributable to powder deformation. Thermal analysis of unmilled Ti50Ni powder exposed the Ni Curie point at ~353 °C. The normal α → β phase transformation in CP Ti was suppressed due to the presence of Ni powder. Differential scanning calorimetry (DSC), scanning electron microscopy (SEM) and X-ray diffraction (XRD) were used to characterize the milled and annealed powders.

KW - Thermal analysis TiNi Phase transformation Ball milling

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VL - 38

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JO - Materials Today: Proceedings

JF - Materials Today: Proceedings

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Y2 - 30 April 2020 through 3 May 2020

ER -

Thermal analysis and morphology of the ball-milled Ti-Ni powder

Abstract

Keywords

ASJC Scopus subject areas

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