一种用于采掘的耐腐蚀抗冲击硬质合金及其制备方法
By using a gradient structure of WC cemented carbide and combining composite binder phases and additives, the corrosion problem of traditional WC-Co alloys in harsh environments has been solved, thereby improving the alloy's corrosion resistance, wear resistance, and thermal stability, and extending its service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ZIGONG CEMENTED CARBIDE CORP
- Filing Date
- 2025-12-12
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional WC-Co cemented carbide corrodes severely in acidic mining environments with abundant water, high chloride ion content, or low pH, leading to a decline in alloy performance and making it unable to meet the comprehensive performance requirements of mining tools in complex and harsh environments.
WC cemented carbide with a gradient structure improves the corrosion resistance, wear resistance and thermal stability of the alloy by replacing the traditional Co binder phase with a gradient sintering process using specific composite binder phases and additives (Sc2O3, TiB2, AlN).
It significantly improves the overall performance of the alloy in harsh environments, extends its service life, achieves a balance between hardness and toughness, and enhances wear resistance and thermal stability.
Smart Images
Figure CN121629208B_ABST