钒钛烧结矿和普通烧结矿显微力学性能对比
Iron Steel Vanadium Titanium(2017)
Abstract
采用维氏压痕法对钒钛烧结矿与普通烧结矿中常见矿物的显微硬度进行测定,对比分析不同矿物的显微硬度值及压痕裂纹的萌生与扩展.研究发现,两种烧结矿中常见矿物的显微硬度从高到低依次为:钙钛矿-钛赤铁矿-铁酸钙-交织熔蚀结构-钛磁铁矿-硅酸盐;赤铁矿-交织熔蚀结构-铁酸钙-磁铁矿-硅酸盐.总体上钒钛烧结矿的显微硬度高于普通烧结矿,但部分矿物压痕裂纹多,且延伸较长,钙钛矿和钛赤铁矿断裂韧性差、易碎.烧结矿中减少板块状赤铁矿,多发展铁酸钙和交织熔蚀结构有利于提高烧结矿的显微硬度,改善烧结矿的质量.
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