Spark plasma sintering of SiC-coated large-size diamond powder

被引：11

作者：

Kitiwan, Mettaya ^{[1
]}

Katsui, Hirokazu ^{[1
]}

Goto, Takashi ^{[1
]}

机构：

[1] Tohoku Univ, Inst Mat Res, Aoba Ku, 2-1-1 Katahira, Sendai, Miyagi 9808577, Japan

来源：

MATERIALS TODAY-PROCEEDINGS | 2017年 / 4卷 / 11期

关键词：

Diamond; silicon carbide; silica; chemical vapor deposition; spark plasma sintering; MECHANICAL-PROPERTIES; COMPOSITES; GLASS;

D O I：

10.1016/j.matpr.2017.09.027

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A large-size (25 mu m in diameter) diamond powder was coated with a SiC layer by rotary chemical vapor deposition. The SiC-coated diamond powder was consolidated with a SiO2 additive by spark plasma sintering (SPS) under a moderate pressure of 130 MPa at 1673-1973 K for 300 s. The relative density of the diamond body with 35 wt% SiO2 using the SiC-coated diamond powder was in the range 98-99% while that of the uncoated diamond powder was in the range 89-94%. The highest Vickers hardness of the SiC-coated diamond bodies was 36 GPa at 4.9 N. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：11453 / 11456

页数：4

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