气体雾化法制备TiB2/Al复合材料粉末及其组织演变

采用氟盐反应法制备TiB2/Al复合材料铸锭，并以此为原料利用高压气体雾化制粉技术制备TiB2/Al复合材料粉末。利用金相显微镜、扫描电子显微镜、X射线衍射仪、粒度分布仪等手段对所制备铸锭和粉末的组织及性能进行了表征。结果表明：Al熔体中TiB2的溶度积远小于TiAl3和AlB2的溶度积，TiB2自Al熔体中沉淀析出导致的体系Gibbs自由能变化量比TiAl3或AlB2自Al熔体中沉淀析出导致的体系Gibbs自由能变化量的值更小。TiB2/Al复合材料铸锭及粉末均主要由α-Al相和TiB2相组成。气体雾化制备TiB2/Al复合材料粉末中TiB2颗粒具有纳米尺度，且均匀弥散地分布于Al基体之中，...

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Published inFen mo ye jin ji shu Vol. 40; no. 1; pp. 33 - 39
Main Authors 江鸿翔, 宋岩, 赵雷, 何杰, 赵九洲, 张丽丽
Format Journal Article
LanguageChinese
Published Editorial Office of Powder Metallurgy Technology 27.02.2022
Subjects
3d打印
显微组织
气体雾化
粉末制备
铝基复合材料
Online AccessGet full text
ISSN1001-3784
DOI10.19591/j.cnki.cn11-1974/tf.2021030039

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Abstract 采用氟盐反应法制备TiB2/Al复合材料铸锭，并以此为原料利用高压气体雾化制粉技术制备TiB2/Al复合材料粉末。利用金相显微镜、扫描电子显微镜、X射线衍射仪、粒度分布仪等手段对所制备铸锭和粉末的组织及性能进行了表征。结果表明：Al熔体中TiB2的溶度积远小于TiAl3和AlB2的溶度积，TiB2自Al熔体中沉淀析出导致的体系Gibbs自由能变化量比TiAl3或AlB2自Al熔体中沉淀析出导致的体系Gibbs自由能变化量的值更小。TiB2/Al复合材料铸锭及粉末均主要由α-Al相和TiB2相组成。气体雾化制备TiB2/Al复合材料粉末中TiB2颗粒具有纳米尺度，且均匀弥散地分布于Al基体之中，不存在明显的偏聚现象。TiB2/Al复合材料粉末的粒度主要分布在10～100 μm之间，呈正态分布，粒径介于10～70 μm粉末占比（质量分数）约为81.1%，粒径大于70 μm粉末收得率为12.6%，粒径小于10 μm粉末收得率为6.3%。
AbstractList 采用氟盐反应法制备TiB2/Al复合材料铸锭，并以此为原料利用高压气体雾化制粉技术制备TiB2/Al复合材料粉末。利用金相显微镜、扫描电子显微镜、X射线衍射仪、粒度分布仪等手段对所制备铸锭和粉末的组织及性能进行了表征。结果表明：Al熔体中TiB2的溶度积远小于TiAl3和AlB2的溶度积，TiB2自Al熔体中沉淀析出导致的体系Gibbs自由能变化量比TiAl3或AlB2自Al熔体中沉淀析出导致的体系Gibbs自由能变化量的值更小。TiB2/Al复合材料铸锭及粉末均主要由α-Al相和TiB2相组成。气体雾化制备TiB2/Al复合材料粉末中TiB2颗粒具有纳米尺度，且均匀弥散地分布于Al基体之中，不存在明显的偏聚现象。TiB2/Al复合材料粉末的粒度主要分布在10～100 μm之间，呈正态分布，粒径介于10～70 μm粉末占比（质量分数）约为81.1%，粒径大于70 μm粉末收得率为12.6%，粒径小于10 μm粉末收得率为6.3%。
Author 何杰
赵雷
宋岩
赵九洲
江鸿翔
张丽丽
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  organization: 中国科学院金属研究所师昌绪先进材料创新中心, 沈阳 110016
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StartPage 33
SubjectTerms 3d打印
显微组织
气体雾化
粉末制备
铝基复合材料
Title 气体雾化法制备TiB2/Al复合材料粉末及其组织演变
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