VC,Cr<sub>3</sub>C<sub>2</sub>對WC-Co納米粉燒結性能的影響

史曉亮; 邵剛勤; 段興龍; 張國強; 張衛豐

doi:10.13374/j.issn1001-053x.2004.06.037

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驗證碼

VC,Cr₃C₂對WC-Co納米粉燒結性能的影響

doi: 10.13374/j.issn1001-053x.2004.06.037

1. 武漢理工大學材料復合新技術國家重點實驗室, 武漢 430070;
2. 廣州經濟技術開發區建筑工程質量檢測站, 廣州 510530

基金項目:

中國博士后科學基金(No.2003034504),武漢理工大學材料復合新技術國家重點實驗室開放基金(No.2004-2005),國家863納米材料專項(No.2002AA302504)和武漢理工大學校基金(No.2003XJJ202)資助項目

詳細信息

作者簡介:
史曉亮男,30歲,博士后

中圖分類號: TF125.2;TG135.5
計量
- 文章訪問數: 208
- HTML全文瀏覽量: 42
- PDF下載量: 5
- 被引次數: 0
出版歷程
- 收稿日期: 2003-12-10
- 網絡出版日期: 2021-08-17

Influence of VC, Cr₃C₂ on Sintering Properties of Nanocrystalline WC-Co Composite Powders

1. State Key Laboratory of Advanced Technology for Materials Synthesis&Processing, Wuhan University of Technology, Wuhan 430070, China;
2. Construction Engineering Quality Testing Station of Guangzhou Economic and Technology Development District, Guangzhou 510530, China

摘要

摘要: 研究了WC-10Co納米復合粉的熱壓燒結,確定合理的燒結溫度為1360℃.在納米WC-10Co復合粉中分別摻雜1.0%VC和1.0%Cr₃C₂(質量分數),根據燒結體的斷裂強度、洛氏硬度等性能和斷口形貌,研究了晶粒生長抑制劑VC,Cr₃C₂對納米復合WC-10Co粉末燒結性能的影響.結果表明,納米WC-10Co復合粉摻雜1.0%VC或1.0%Cr₃C₂,在1 360℃燒結,可以得到晶粒度小于300nm的整體性能較好的超細WC-Co硬質合金,摻雜1.0%VC抑制晶粒生長的效果要好于摻雜1.0%Cr₃C₂.
- 納米 /
- WC-Co復合粉 /
- 熱壓燒結 /
- 晶粒生長抑制劑 /
- 硬質合金
Abstract: Nanocrystalline WC-10Co composite powders were sintered by hot-press sintering at 1360℃. The influence of 1.0% VC and 1.0% Cr₃C₂ (mass fraction) growth inhibitors on the sintering properties of the composite powders was investigated according to the transverse rupture strength (TRS), Rockwell A hardness (HRA) and the scanning electron microscopy (SEM) micrographs of the fractured surfaces of specimens. The result shows that the inhibiting grains growth effect of 1.0% VC is better than that of 1.0% Cr₃C₂. When nanocrystalline WC-10Co composite powders doped by 1.0%VC or 1.0% Cr₃C₂ (mass fraction) are sintered at 1360℃, ultrafine WC-10Co cemented carbide with an average grain size of less than 300 nm and better properties are achieved.
- nanocrystalline /
- WC-Co composite powders /
- hot-press sintering /
- grain growth inhibitor /
- cemented carbide