王兰,吴奕明,卞国阳,谢欣宇.稀土La2O3对45钢渗硼层性能的影响[J].表面技术,2019,48(2):94-99.
WANG Lan,WU Yi-ming,BIAN Guo-yang,XIE Xin-yu.Effect of Rare Earth La2O3 on Performance of 45 Steel Boronized Layer[J].Surface Technology,2019,48(2):94-99 |
| 稀土La2O3对45钢渗硼层性能的影响 |
| Effect of Rare Earth La2O3 on Performance of 45 Steel Boronized Layer |
| 投稿时间：2018-07-27 修订日期：2019-02-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2019.02.014 |
| 中文关键词: 渗硼 稀土La2O3 硬度 耐磨性 耐蚀性 脆性 |
| 英文关键词:boriding rare earth La2O3 hardness wear resistance corrosion resistance brittleness |
| 基金项目:江苏大学高级人才启动基金（No. 15JDG076） |
|
|
|
|
| 摘要点击次数: |
| 全文下载次数: |
| 中文摘要: |
| 目的 研究渗硼剂中稀土氧化物La2O3的添加量对45#钢渗硼层厚度及性能的影响。方法 通过在渗硼剂中添加质量分数为0%、5%、10%的La2O3，对45#钢在850 ℃进行4 h渗硼处理，利用金相显微镜观察渗硼层的形貌并测试其厚度，利用XRD分析渗硼层的物相结构，利用显微硬度计、磨损试验机、电化学工作站对渗硼层的硬度、耐磨性、耐腐蚀性以及脆性进行测定及衡量。结果 45#钢渗硼后，硬度显著提高，且在渗剂中加入5%和10%的La2O3进行渗硼后，渗硼层厚度及硬度较渗剂中不加La2O3均有明显增加。在渗剂中添加不同含量的La2O3对渗硼层的耐磨性、耐蚀性以及脆性影响不同。添加5%La2O3进行渗硼后，渗硼层的耐磨性、耐蚀性最佳，脆性最小；添加10%La2O3进行渗硼后，渗硼层的耐磨性和脆性都比未加La2O3的要差，但耐腐蚀性较未加La2O3的要好。结论 综合渗硼层的厚度、硬度、耐磨性、耐腐蚀性以及脆性指标，在渗硼剂中加入5%La2O3时，45#钢渗硼层厚度适中，性能最佳。 |
| 英文摘要: |
| The work aims to study the effect of the content of rare earth oxide La2O3 in the boronizing agent on the thickness and properties of boronizing layer of 45 steel. 0% La2O3, 5% La2O3 and 10% La2O3 were added to boronizing agent for boronizing 45 steel at 850 ℃ for 4 hours. The morphology and thickness of the boronizing layer were observed and measured by metallographic microscope; the phase structure of boronizing layer was analyzed by XRD; and the hardness, wear resistance, corrosion resistance and brittleness of boronizing layer were measured and determined by microhardness tester, wear tester and electrochemical workstation. Boronizing layer of 45 steel could remarkably improve the hardness of base material, and adding 5% La2O3 and 10% La2O3 to the infiltration agent could significantly increase the thickness and hardness of boronizing layer compared with that without La2O3 in the infiltration agent. However, different contents of La2O3 had different effects on the wear resistance, corrosion resistance and brittleness of boronizing layer. The boronizing layer with 5% La2O3 in the infiltration agent had the best wear resistance and corrosion resistance and the lowest brittleness. The wear resistance and brittleness of boronizing layer with 10% La2O3 in the infiltration agent were worse than those without La2O3, but the corrosion resistance was better than that without La2O3. Combined with the boronizing layer thickness, hardness, wear resistance, corrosion resistance and brittleness indexes, when 5% La2O3 is added to the boronizing agent, and the thickness of boronizing layer is moderate and the performance is optimal. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
渝公网安备 50010702501715号