Hardness of cubic silicon nitride

I. Tanaka; F. Oba; T. Sekine; E. Ito; A. Kubo; K. Tatsumi; H. Adachi; T. Yamamoto

doi:10.1557/JMR.2002.0105

Hardness of cubic silicon nitride

I. Tanaka^*, F. Oba, T. Sekine, E. Ito, A. Kubo, K. Tatsumi, H. Adachi, T. Yamamoto

^*Corresponding author for this work

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

60 Citations (Scopus)

Abstract

We report that polycrystalline cubic-Si₃N₄ with a spinel structure and low oxygen concentration (<0.5 wt%) shows Vickers hardness of 43 GPa when measured with the indentation load of 10 mN. The hardness decreases with the increase of the indentation load, which can be ascribed to the presence of weak grain boundaries. The high hardness can be well explained by its large shear modulus as predicted by first-principles calculations.

Original language	English
Pages (from-to)	731-733
Number of pages	3
Journal	Journal of Materials Research
Volume	17
Issue number	4
DOIs	https://doi.org/10.1557/JMR.2002.0105
Publication status	Published - 2002 Apr
Externally published	Yes

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1557/JMR.2002.0105

Cite this

@article{9b6a64c4e4834253868af57a5c4894ca,

title = "Hardness of cubic silicon nitride",

abstract = "We report that polycrystalline cubic-Si3N4 with a spinel structure and low oxygen concentration (<0.5 wt%) shows Vickers hardness of 43 GPa when measured with the indentation load of 10 mN. The hardness decreases with the increase of the indentation load, which can be ascribed to the presence of weak grain boundaries. The high hardness can be well explained by its large shear modulus as predicted by first-principles calculations.",

author = "I. Tanaka and F. Oba and T. Sekine and E. Ito and A. Kubo and K. Tatsumi and H. Adachi and T. Yamamoto",

year = "2002",

month = apr,

doi = "10.1557/JMR.2002.0105",

language = "English",

volume = "17",

pages = "731--733",

journal = "Journal of Materials Research",

issn = "0884-2914",

publisher = "Materials Research Society",

number = "4",

}

TY - JOUR

T1 - Hardness of cubic silicon nitride

AU - Tanaka, I.

AU - Oba, F.

AU - Sekine, T.

AU - Ito, E.

AU - Kubo, A.

AU - Tatsumi, K.

AU - Adachi, H.

AU - Yamamoto, T.

PY - 2002/4

Y1 - 2002/4

N2 - We report that polycrystalline cubic-Si3N4 with a spinel structure and low oxygen concentration (<0.5 wt%) shows Vickers hardness of 43 GPa when measured with the indentation load of 10 mN. The hardness decreases with the increase of the indentation load, which can be ascribed to the presence of weak grain boundaries. The high hardness can be well explained by its large shear modulus as predicted by first-principles calculations.

AB - We report that polycrystalline cubic-Si3N4 with a spinel structure and low oxygen concentration (<0.5 wt%) shows Vickers hardness of 43 GPa when measured with the indentation load of 10 mN. The hardness decreases with the increase of the indentation load, which can be ascribed to the presence of weak grain boundaries. The high hardness can be well explained by its large shear modulus as predicted by first-principles calculations.

UR - http://www.scopus.com/inward/record.url?scp=0036541892&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036541892&partnerID=8YFLogxK

U2 - 10.1557/JMR.2002.0105

DO - 10.1557/JMR.2002.0105

M3 - Article

AN - SCOPUS:0036541892

SN - 0884-2914

VL - 17

SP - 731

EP - 733

JO - Journal of Materials Research

JF - Journal of Materials Research

IS - 4

ER -

Hardness of cubic silicon nitride

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this