摘要
针对铸造多晶硅凝固膨胀产生的应力引起铸锭开裂的问题,采用自行设计的分体式坩埚作为浇注模进行实验,与普通坩埚进行对比,并对裂纹形成机理进行了分析。结果表明,采用普通坩埚浇注的铸锭产生明显的宏观裂纹,而采用分体式坩埚浇注的铸锭没有裂纹;另外,普通坩埚只能使用一次,分体坩埚可重复使用。
In order to solve the cracks of casting multicrystal silicon ingot caused by solidification expansion stress, the self-designed split-type crucibles are adopted as the mould for experiments. The experimental results are compared with those using common crucible as mould. It shows that an obvious macroscopic crack occurs in the silicon ingot obtained by using common crucible, but no cracks in the case of using split-type crucibles; In addition, the common crucible can be used only once, whereas the split-type crucibles can be used repeatedly. The mechanism of crack formation is also analyzed.
出处
《铸造技术》
CAS
北大核心
2008年第12期1659-1661,共3页
Foundry Technology
基金
国家自然科学基金(50674018)
关键词
铸造多晶硅
分体坩埚
冷裂
Casting multi-crystalline silicon
Split-type crucible
Cold crack
作者简介
马晓东（1983-），辽宁瓦房店人，硕士生．研究方向：冶金法制备太阳能级多晶硅．Emaii：maxd0722@tom．com.
