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中南大学学报(自然科学版)

Journal of Central South University

第31卷    第1期    总第131期    2000年2月

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文章编号:1004-0609(2000)01-0123-04
碳热法生产稀土硅化物合金的物料性质(Ⅱ)

——气孔率与抗压强度

邢鹏飞,涂赣峰,任存治,李春材,孙利娟,张成祥

(东北大学材料与冶金学院,沈阳110006)

摘 要: 测定了稀土矿加两种不同碳质还原剂的团块在常温下、773K焙烧后、1 573~1773 K分别焙烧后的气孔率与压制压力的关系,也测定了这两种团块在焙烧前、773 K及127 3~1673 K分别焙烧后的抗压强度与焙烧温度和时间的关系。

 

关键字: 碳热法;稀土硅化物合金;气孔率;抗压强度

Physical properties of raw materials used in producing rare earth silicide alloy by carbon thermal reduction method(Ⅱ)

——Pore ratio and compressive strength

XING Peng-fei, REN Cun-zhi, TU Gan-feng, LI Chun-cai, SUN Li-juan, ZHANG Cheng-xiang

School of Materials and Metallurgy, Northeastern University, Shenyang 110006, P.R.China

Abstract:This study was focussed upon the porosity (pore ratio) and compressive strength of the raw material, which was mixed the rare earth concentrates with two kinds of carbon reductants, A0 and B0, and pressed into compacts. After the compacts were roasted at 773K, 1573~1773K respectively, their porosity and compressive strength were measured, and were compared with those of the compacts un-roasted. The results show that, the porosity of all compacts decreases with increasing pressing pressure linearly, and the porosities of the compacts roasted at 157 3 ~1773 K reach to 50%~55%; the compressive strength of the compacts roasted at 773K increases remarkably, but those of the compacts roasted at 1273~1673K decrease with the increase of roasting temperature and time.

 

Key words: carbon thermal reduction; rare earth silicide alloys; porosity; compressive strength

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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