Al-Ti-B中间合金的制备研究

李军; 吴恩辉; 侯静; 徐众; 李宏; 龚昊

doi:10.7513/j.issn.1004-7638.2023.03.009

Al-Ti-B中间合金的制备研究

doi: 10.7513/j.issn.1004-7638.2023.03.009

李军^{1, 2,},
吴恩辉^{1, 2},
侯静^{1, 2},
徐众^{1, 2},
李宏^{1, 2},
龚昊^{1, 2}

1.
攀枝花学院钒钛学院, 四川攀枝花 617000
2.
钒钛资源综合利用四川省重点实验室, 四川攀枝花617000

基金项目: 四川省科技计划项目（2020YFH0195）；工业固态废弃物土木工程综合开发利用四川省高等学校重点实验室项目（FQWLY-2021-Z-08）

详细信息

作者简介:
李军，1986 年出生，男，重庆九龙人，博士，副研究员，长期从事钒钛资源综合利用领域的研究工作，E-mail: liudejun163@126.com

中图分类号: TF823,TG146.21
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- 被引次数: 0
出版历程
- 收稿日期: 2022-09-27
- 刊出日期: 2023-06-30

Research on the preparation of Al-Ti-B master alloy

Li Jun^{1, 2
,},
Wu Enhui^{1, 2},
Hou Jing^{1, 2},
Xu Zhong^{1, 2},
Li Hong^{1, 2},
Gong Hao^{1, 2}

1.
College of Vanadium and Titanium, Panzhihua University, Panzhihua 617000, Sichuan, China
2.
Vanadium and Titanium Resources Comprehensive Utilization Key Laboratory of Sichuan Province, Panzhihua 617000, Sichuan, China

摘要

摘要: 为了使铝材具有更好的组织性能，常用Al-Ti-B中间合金作为晶粒细化剂。以TiO₂、B₂O₃为原料，铝热还原一步合成Al-Ti-B中间合金。研究结果表明，CaO-CaF₂为造渣剂，且Al₂O₃∶CaO∶CaF₂=1∶1∶1、焙烧温度1550 ℃、焙烧时间30 min、Al/TiO₂大于0.9条件下，合金与熔渣分离效果较好，成功制备出Al-Ti-B中间合金，Ti、B收率大于80%。合金中Al和B含量可以根据原料中配铝量和B₂O₃配入量进行调控，制备的Al-Ti-B中间合金的物相主要由TiAl、Ti₃Al、Ti₂AlN 和TiB₂组成，随着配铝量和B₂O₃配入量的增加，合金中Ti₃Al和Ti₂AlN相消失，物相由TiAl和TiB₂构成。
- Al-Ti-B中间合金 /
- 铝热还原 /
- 二氧化钛 /
- 三氧化二硼 /
- 物相组成
Abstract: Al-Ti-B master alloy is commonly used as grain refining agent to endow aluminum with better organizational properties. In this paper, TiO₂ and B₂O₃ are used as raw materials for the one-step synthesis of Al-Ti-B master alloy by aluminum thermal reduction. The results show that Al-Ti-B master alloy was successfully prepared under the conditions of Al₂O₃∶CaO∶CaF₂=1∶1∶1, roasting temperature 1550 ℃, roasting time 30 min and Al/TiO₂>0.9. The yield of Ti and B is higher than 80%. The Al and B contents of the alloy can be adjusted according to the amount of Al and B₂O₃ in the raw material. The phase of the alloy changes to TiAl and TiB₂ with the increase of the amount of Al and B₂O₃.
- Al-Ti-B master alloy /
- aluminum thermal reduction /
- titanium dioxide /
- boron trioxide /
- phase composition

HTML全文

图 1 锐钛型钛白粉XRD和SEM分析

Figure 1. XRD and SEM analysis of anatase titanium dioxide powder

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图 2 Al-Ti-B中间合金制备工艺流程示意

Figure 2. Schematic diagram of process flow for Al-Ti-B master alloy

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图 3 纯的TiO₂在不同配铝条件下的相平衡计算结果

Figure 3. Calculation result of phase equilibrium of pure TiO₂ under different aluminum preparation conditions

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图 4 纯的B₂O₃在不同配铝条件下的相平衡计算结果

Figure 4. Calculation result of phase equilibrium of pure B₂O₃ under different aluminum preparation conditions

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图 5 不同B₂O₃含量和配铝条件下相平衡计算结果

(a)原料中5 gB₂O₃; (b)原料中15 gB₂O₃; (c)原料中30 gB₂O₃

Figure 5. Calculation results of phase equilibrium with different B₂O₃ content and aluminum

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图 6 Al₂O₃-CaO-CaF₂三元渣系液相线图

Figure 6. Liquid phase diagram of Al₂O₃-CaO-CaF₂ ternary slag system

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图 7 不同CaF₂渣系的粘度曲线

Figure 7. Viscosity curves of different CaF₂ slag systems

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图 8 不同CaF₂渣系的密度曲线

Figure 8. Density curves of different CaF₂ slag systems

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图 9 氟化钙的配入量对渣-金分离效果宏观形貌

Figure 9. Macroscopic morphology of slag-gold separation with different dosage of CaF₂

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图 10 不同原料配比对渣-金分离效果宏观形貌

Figure 10. Macroscopic morphologies of slag-gold separation with different raw material ratio

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图 11 还原渣XRD分析

Figure 11. XRD analysis of reduced slag

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图 12 TiO₂含量对CaO-Al₂O₃-CaF₂-TiO₂渣系粘度的影响

Figure 12. Effect of TiO₂ content on viscosity of CaO-Al₂O₃-CaF₂-TiO₂ slag system

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图 13 不同配比条件下Ti、B收率

Figure 13. Yield of Ti and B under different raw material ratios

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图 14 不同条件下制备的Al-Ti-B中间合金XRD分析

Figure 14. XRD analysis of as-prepared Al-Ti-B master alloys under different conditions

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表 1 原料配比

Table 1. Raw material ratio g

序号	钛白粉	铝粉	氧化硼	氧化钙	氟化钙
1^#	150	135	0	127.5	63.75
2^#	150	135	5	134.9	67.45
3^#	150	135	10	142.3	71.10
4^#	150	135	15	149.6	74.80
5^#	150	135	5	134.9	134.90
6^#	150	135	15	149.6	149.60
7^#	150	135	30	171.5	171.50
8^#	150	181.3	30	171.5	171.50

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表 2 还原熔渣XRF分析

Table 2. XRF analysis of reduced slag %

编号	Al₂O₃	CaO	CaF₂	TiO₂	MgO	Fe₂O₃
5^#	47.3	42.6	8.72	0.43	0.32	0.32
6^#	47.1	34.6	9.88	5.83	1.14	0.49
7^#	45.5	32.5	11.5	11.61	0.52	0.38

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表 3 制备的Ti-Al-B中间合金化学分析

Table 3. Chemical analysis of prepared Ti-Al-B master alloys

编号	w/%						合金质量/g
编号	Ti	Al	B	Ca	Si	Mg	合金质量/g
5^#	57.5	34.7	1.02	5.86	0.74	0.26	138
6^#	55.6	31.6	3.13	6.25	1.14	0.42	130
8^#	51.3	41.4	5.03	1.66	1.35	0.142	153

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