Preparation and characterization of lanthanum carbide encapsulated carbon nanocapsule/lanthanum hexaboride nanocomposites

Masaru Namura; Ippei Waki; Yoshinori Sato; Go Yamamoto; Akira Okubo; Hisamichi Kimura; Naohisa Osaka; Kenichi Motomiya; Toshiyuki Hashida; Balachandran Jeyadevan; Kazuyuki Tohji

doi:10.1016/j.matlet.2009.03.006

Preparation and characterization of lanthanum carbide encapsulated carbon nanocapsule/lanthanum hexaboride nanocomposites

Masaru Namura, Ippei Waki, Yoshinori Sato, Go Yamamoto, Akira Okubo, Hisamichi Kimura, Naohisa Osaka, Kenichi Motomiya, Toshiyuki Hashida, Balachandran Jeyadevan, Kazuyuki Tohji

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

LaC₂@CNC/LaB₆ nanocomposites were prepared using a spark plasma sintering system, and their mechanical properties and the intensity of characteristic La X-rays from the composites were characterized for application as X-ray target material. Using LaB₆ as a binder, we succeeded in producing LaC₂@CNC/LaB₆ nanocomposites with a bulk density (2.91 g/cm³) and specific electric resistance (3.12 × 10^{- 4} Ω cm) through solidification at 2123 K. The fracture bending strength of LaC₂@CNC/LaB₆ nanocomposites (224 MPa) was 1.5 times larger than that observed for graphite/LaB₆ composites. The most emitted characteristic La Lα X-ray from LaC₂@CNC/LaB₆ nanocomposites was 7743 counts/mm²/s in comparison with 6372 counts/mm²/s for graphite/LaB₆ composites.

Original language	English
Pages (from-to)	1307-1310
Number of pages	4
Journal	Materials Letters
Volume	63
Issue number	15
DOIs	https://doi.org/10.1016/j.matlet.2009.03.006
Publication status	Published - 2009 Jun 15

Keywords

Electronic property
Lanthanum hexaboride (LaB)
Mechanical property
Metal-encapsulating carbon nanocapsules (MECNCs)
Nanocomposites
Sintering

Access to Document

10.1016/j.matlet.2009.03.006

Cite this

@article{d3a728fd98bd4c8cb499f6d80228bbf1,

title = "Preparation and characterization of lanthanum carbide encapsulated carbon nanocapsule/lanthanum hexaboride nanocomposites",

abstract = "LaC2@CNC/LaB6 nanocomposites were prepared using a spark plasma sintering system, and their mechanical properties and the intensity of characteristic La X-rays from the composites were characterized for application as X-ray target material. Using LaB6 as a binder, we succeeded in producing LaC2@CNC/LaB6 nanocomposites with a bulk density (2.91 g/cm3) and specific electric resistance (3.12 × 10- 4 Ω cm) through solidification at 2123 K. The fracture bending strength of LaC2@CNC/LaB6 nanocomposites (224 MPa) was 1.5 times larger than that observed for graphite/LaB6 composites. The most emitted characteristic La Lα X-ray from LaC2@CNC/LaB6 nanocomposites was 7743 counts/mm2/s in comparison with 6372 counts/mm2/s for graphite/LaB6 composites.",

keywords = "Electronic property, Lanthanum hexaboride (LaB), Mechanical property, Metal-encapsulating carbon nanocapsules (MECNCs), Nanocomposites, Sintering",

author = "Masaru Namura and Ippei Waki and Yoshinori Sato and Go Yamamoto and Akira Okubo and Hisamichi Kimura and Naohisa Osaka and Kenichi Motomiya and Toshiyuki Hashida and Balachandran Jeyadevan and Kazuyuki Tohji",

note = "Funding Information: This work was supported by a Grant-in-Aid for Young Research (A) 19686038, and Exploratory Research 19656175 from the Ministry of Education, Science, Culture and Sport of Japan, and Health and Labor Sciences Research Grant No. H18-chemistry-006 from the Ministry of Health, Labor and Welfare. ",

year = "2009",

month = jun,

day = "15",

doi = "10.1016/j.matlet.2009.03.006",

language = "English",

volume = "63",

pages = "1307--1310",

journal = "Materials Letters",

issn = "0167-577X",

publisher = "Elsevier",

number = "15",

}

TY - JOUR

T1 - Preparation and characterization of lanthanum carbide encapsulated carbon nanocapsule/lanthanum hexaboride nanocomposites

AU - Namura, Masaru

AU - Waki, Ippei

AU - Sato, Yoshinori

AU - Yamamoto, Go

AU - Okubo, Akira

AU - Kimura, Hisamichi

AU - Osaka, Naohisa

AU - Motomiya, Kenichi

AU - Hashida, Toshiyuki

AU - Jeyadevan, Balachandran

AU - Tohji, Kazuyuki

N1 - Funding Information: This work was supported by a Grant-in-Aid for Young Research (A) 19686038, and Exploratory Research 19656175 from the Ministry of Education, Science, Culture and Sport of Japan, and Health and Labor Sciences Research Grant No. H18-chemistry-006 from the Ministry of Health, Labor and Welfare.

PY - 2009/6/15

Y1 - 2009/6/15

N2 - LaC2@CNC/LaB6 nanocomposites were prepared using a spark plasma sintering system, and their mechanical properties and the intensity of characteristic La X-rays from the composites were characterized for application as X-ray target material. Using LaB6 as a binder, we succeeded in producing LaC2@CNC/LaB6 nanocomposites with a bulk density (2.91 g/cm3) and specific electric resistance (3.12 × 10- 4 Ω cm) through solidification at 2123 K. The fracture bending strength of LaC2@CNC/LaB6 nanocomposites (224 MPa) was 1.5 times larger than that observed for graphite/LaB6 composites. The most emitted characteristic La Lα X-ray from LaC2@CNC/LaB6 nanocomposites was 7743 counts/mm2/s in comparison with 6372 counts/mm2/s for graphite/LaB6 composites.

AB - LaC2@CNC/LaB6 nanocomposites were prepared using a spark plasma sintering system, and their mechanical properties and the intensity of characteristic La X-rays from the composites were characterized for application as X-ray target material. Using LaB6 as a binder, we succeeded in producing LaC2@CNC/LaB6 nanocomposites with a bulk density (2.91 g/cm3) and specific electric resistance (3.12 × 10- 4 Ω cm) through solidification at 2123 K. The fracture bending strength of LaC2@CNC/LaB6 nanocomposites (224 MPa) was 1.5 times larger than that observed for graphite/LaB6 composites. The most emitted characteristic La Lα X-ray from LaC2@CNC/LaB6 nanocomposites was 7743 counts/mm2/s in comparison with 6372 counts/mm2/s for graphite/LaB6 composites.

KW - Electronic property

KW - Lanthanum hexaboride (LaB)

KW - Mechanical property

KW - Metal-encapsulating carbon nanocapsules (MECNCs)

KW - Nanocomposites

KW - Sintering

UR - http://www.scopus.com/inward/record.url?scp=64049104376&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=64049104376&partnerID=8YFLogxK

U2 - 10.1016/j.matlet.2009.03.006

DO - 10.1016/j.matlet.2009.03.006

M3 - Article

AN - SCOPUS:64049104376

SN - 0167-577X

VL - 63

SP - 1307

EP - 1310

JO - Materials Letters

JF - Materials Letters

IS - 15

ER -

Preparation and characterization of lanthanum carbide encapsulated carbon nanocapsule/lanthanum hexaboride nanocomposites

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this