钢渣微晶玻璃显微硬度性能研究

The study of the microhardness of steel slag glass-ceramics

用熔融法制得钢渣玻璃，通过两步热处理法获得钢渣微晶玻璃，显微硬度是其重要的性能指标。对不同的晶核剂，不同的热处理制度对钢渣微晶玻璃显微硬度的影响进行了研究，结果表明：同样情况下，TiO2作为晶核剂的微晶玻璃显微硬度要优于ZnO；在700℃保温1h，940℃保温2h得到的样品显微硬度最高791．8HV。通过X射线衍射以及扫描电镜分析发现：不同条件下，微晶玻璃体系的主晶相均为钙铁透辉石Ca（Fe，Mg）Si2O6，同时含有少量钠长石；晶粒的生长情况随着条件的改变而变化，晶体生长得越致密，样品的显微硬度越高。

Steel slag was prepared for glass by melting, then gained glass-ceramics through two-steps heat treatments, microhardness is an important property for glass-ceramics o In this article, research has been done about that the influence of different agents and different heat treatments to microhardness of glass-ceramics, the result indicate that TiO2 which used as agent is better for the microhardness than ZnO when others are constant; when the nucleation time was lh and the crystallization time was 2h, the microhardness value was the best of 791.8HV5. Through XRD and SEM analysis, the main crystal phase of all samples was diopside（CaMgSi2O6）, meanwhile there were albite and quartz which were affect the microhardness, the dimension of crystal particles were change with the change of heat treatment, the more denser and the larger of the crystal was, the higher of the microhardness was.